./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-09 01:00:31,779 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:00:31,780 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:00:31,787 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:00:31,787 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:00:31,788 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:00:31,789 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:00:31,790 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:00:31,791 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:00:31,792 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:00:31,793 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:00:31,793 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:00:31,793 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:00:31,794 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:00:31,795 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:00:31,795 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:00:31,796 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:00:31,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:00:31,799 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:00:31,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:00:31,801 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:00:31,802 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:00:31,804 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:00:31,804 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:00:31,804 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:00:31,805 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:00:31,806 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:00:31,806 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:00:31,807 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:00:31,808 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:00:31,808 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:00:31,808 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:00:31,808 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:00:31,809 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:00:31,809 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:00:31,810 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:00:31,810 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 01:00:31,817 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:00:31,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:00:31,818 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:00:31,818 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:00:31,818 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:00:31,818 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:00:31,818 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 01:00:31,819 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:00:31,819 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:00:31,819 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:00:31,819 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:00:31,819 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:00:31,819 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:00:31,819 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:00:31,819 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:00:31,820 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:00:31,820 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:00:31,820 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:00:31,820 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:00:31,820 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:00:31,820 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:00:31,820 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:00:31,821 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:00:31,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:00:31,821 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:00:31,821 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:00:31,821 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:00:31,821 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 01:00:31,821 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:00:31,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:00:31,822 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer 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(__VERIFIER_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 -> d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 [2018-12-09 01:00:31,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:00:31,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:00:31,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:00:31,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:00:31,849 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:00:31,850 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-12-09 01:00:31,885 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/data/34ece9599/2c0cfaf35ba64373bd1593ee9d4dc914/FLAG2c5cc1a03 [2018-12-09 01:00:32,365 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:00:32,365 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-12-09 01:00:32,371 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/data/34ece9599/2c0cfaf35ba64373bd1593ee9d4dc914/FLAG2c5cc1a03 [2018-12-09 01:00:32,380 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/data/34ece9599/2c0cfaf35ba64373bd1593ee9d4dc914 [2018-12-09 01:00:32,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:00:32,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:00:32,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:00:32,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:00:32,385 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:00:32,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5243922c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32, skipping insertion in model container [2018-12-09 01:00:32,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:00:32,411 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:00:32,560 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:00:32,567 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:00:32,627 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:00:32,646 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:00:32,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32 WrapperNode [2018-12-09 01:00:32,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:00:32,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:00:32,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:00:32,647 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:00:32,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:00:32,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:00:32,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:00:32,664 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:00:32,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... [2018-12-09 01:00:32,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:00:32,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:00:32,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:00:32,684 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:00:32,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 01:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 01:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 01:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:00:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:00:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 01:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 01:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 01:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:00:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:00:32,907 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:00:32,908 INFO L280 CfgBuilder]: Removed 11 assue(true) statements. [2018-12-09 01:00:32,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:00:32 BoogieIcfgContainer [2018-12-09 01:00:32,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:00:32,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:00:32,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:00:32,911 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:00:32,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:00:32" (1/3) ... [2018-12-09 01:00:32,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7812c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:00:32, skipping insertion in model container [2018-12-09 01:00:32,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:00:32" (2/3) ... [2018-12-09 01:00:32,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7812c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:00:32, skipping insertion in model container [2018-12-09 01:00:32,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:00:32" (3/3) ... [2018-12-09 01:00:32,913 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-12-09 01:00:32,919 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:00:32,923 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 01:00:32,933 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 01:00:32,950 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 01:00:32,950 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:00:32,950 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:00:32,951 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:00:32,951 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:00:32,951 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:00:32,951 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:00:32,951 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:00:32,951 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:00:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-12-09 01:00:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:00:32,965 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:32,966 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:32,967 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:32,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -739689888, now seen corresponding path program 1 times [2018-12-09 01:00:32,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:32,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:33,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:33,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:33,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:33,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:00:33,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:00:33,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 01:00:33,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 01:00:33,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 01:00:33,070 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-12-09 01:00:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:33,081 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2018-12-09 01:00:33,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 01:00:33,082 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-09 01:00:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:33,088 INFO L225 Difference]: With dead ends: 67 [2018-12-09 01:00:33,088 INFO L226 Difference]: Without dead ends: 31 [2018-12-09 01:00:33,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 01:00:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-09 01:00:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-09 01:00:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-09 01:00:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-12-09 01:00:33,110 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2018-12-09 01:00:33,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:33,110 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-12-09 01:00:33,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 01:00:33,111 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-12-09 01:00:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:00:33,111 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:33,111 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:33,111 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:33,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:33,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1467919078, now seen corresponding path program 1 times [2018-12-09 01:00:33,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:33,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:33,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:33,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:33,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:33,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:00:33,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:00:33,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:00:33,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:00:33,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:00:33,164 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2018-12-09 01:00:33,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:33,208 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-12-09 01:00:33,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:00:33,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-09 01:00:33,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:33,209 INFO L225 Difference]: With dead ends: 37 [2018-12-09 01:00:33,209 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 01:00:33,209 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:00:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 01:00:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2018-12-09 01:00:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-09 01:00:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-12-09 01:00:33,212 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2018-12-09 01:00:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:33,212 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-12-09 01:00:33,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:00:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-12-09 01:00:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 01:00:33,213 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:33,213 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:33,213 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:33,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:33,213 INFO L82 PathProgramCache]: Analyzing trace with hash 583703570, now seen corresponding path program 1 times [2018-12-09 01:00:33,214 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:33,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:33,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:33,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:33,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:33,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:00:33,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:00:33,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:00:33,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:00:33,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:00:33,273 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2018-12-09 01:00:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:33,329 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2018-12-09 01:00:33,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:00:33,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-09 01:00:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:33,330 INFO L225 Difference]: With dead ends: 54 [2018-12-09 01:00:33,330 INFO L226 Difference]: Without dead ends: 52 [2018-12-09 01:00:33,330 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:00:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-09 01:00:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2018-12-09 01:00:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 01:00:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-09 01:00:33,335 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2018-12-09 01:00:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:33,335 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-09 01:00:33,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:00:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-09 01:00:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 01:00:33,336 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:33,336 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:33,336 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:33,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:33,336 INFO L82 PathProgramCache]: Analyzing trace with hash -375576027, now seen corresponding path program 1 times [2018-12-09 01:00:33,336 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:33,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:33,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:33,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:33,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:33,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:00:33,452 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:00:33,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:33,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:00:33,509 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-12-09 01:00:33,512 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-12-09 01:00:33,513 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,516 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,533 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 13 treesize of output 10 [2018-12-09 01:00:33,535 INFO L478 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 10 treesize of output 9 [2018-12-09 01:00:33,536 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,538 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,544 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:33,544 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2018-12-09 01:00:33,573 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:33,575 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:33,575 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-12-09 01:00:33,576 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,590 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:33,593 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:33,603 INFO L478 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 0 case distinctions, treesize of input 41 treesize of output 31 [2018-12-09 01:00:33,606 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:33,608 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-09 01:00:33,608 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,619 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 33 [2018-12-09 01:00:33,621 INFO L478 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 12 treesize of output 1 [2018-12-09 01:00:33,621 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,626 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,629 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,635 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,635 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 4 variables, input treesize:53, output treesize:14 [2018-12-09 01:00:33,650 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2018-12-09 01:00:33,652 INFO L478 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 10 treesize of output 9 [2018-12-09 01:00:33,653 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,657 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,662 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:33,662 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2018-12-09 01:00:33,702 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2018-12-09 01:00:33,704 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 3 [2018-12-09 01:00:33,704 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,709 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 7 treesize of output 1 [2018-12-09 01:00:33,709 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,711 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,714 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:33,714 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:32, output treesize:3 [2018-12-09 01:00:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:33,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:00:33,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-12-09 01:00:33,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 01:00:33,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 01:00:33,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:00:33,740 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states. [2018-12-09 01:00:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:34,121 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2018-12-09 01:00:34,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 01:00:34,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-12-09 01:00:34,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:34,122 INFO L225 Difference]: With dead ends: 96 [2018-12-09 01:00:34,122 INFO L226 Difference]: Without dead ends: 94 [2018-12-09 01:00:34,122 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2018-12-09 01:00:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-12-09 01:00:34,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 42. [2018-12-09 01:00:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-09 01:00:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-12-09 01:00:34,127 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 17 [2018-12-09 01:00:34,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:34,128 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-12-09 01:00:34,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 01:00:34,128 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-12-09 01:00:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 01:00:34,128 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:34,128 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:34,128 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:34,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:34,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1282457529, now seen corresponding path program 1 times [2018-12-09 01:00:34,129 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:34,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:34,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:34,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:34,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:34,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:00:34,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:00:34,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:00:34,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:00:34,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:00:34,190 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2018-12-09 01:00:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:34,240 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-12-09 01:00:34,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:00:34,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-12-09 01:00:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:34,241 INFO L225 Difference]: With dead ends: 57 [2018-12-09 01:00:34,241 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 01:00:34,241 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:00:34,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 01:00:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2018-12-09 01:00:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 01:00:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-12-09 01:00:34,245 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 18 [2018-12-09 01:00:34,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:34,245 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-12-09 01:00:34,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:00:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-12-09 01:00:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 01:00:34,245 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:34,245 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:34,245 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:34,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:34,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1118395700, now seen corresponding path program 1 times [2018-12-09 01:00:34,246 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:34,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:34,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:34,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:34,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:34,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:00:34,375 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:00:34,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:34,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:00:34,418 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,419 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 27 [2018-12-09 01:00:34,422 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 01:00:34,422 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,428 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,437 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 01:00:34,439 INFO L478 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 10 treesize of output 9 [2018-12-09 01:00:34,440 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,442 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,449 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:34,449 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2018-12-09 01:00:34,470 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,470 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,471 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,472 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 34 [2018-12-09 01:00:34,472 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,494 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 01:00:34,498 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,499 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-12-09 01:00:34,499 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,503 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,517 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 26 [2018-12-09 01:00:34,519 INFO L478 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 12 treesize of output 1 [2018-12-09 01:00:34,519 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,522 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,541 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:34,541 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:68, output treesize:37 [2018-12-09 01:00:34,562 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2018-12-09 01:00:34,564 INFO L478 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 10 treesize of output 9 [2018-12-09 01:00:34,564 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,569 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,578 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:34,578 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:50, output treesize:46 [2018-12-09 01:00:34,601 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,602 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,602 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,603 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,604 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 51 [2018-12-09 01:00:34,605 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,631 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2018-12-09 01:00:34,633 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,634 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-12-09 01:00:34,635 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,639 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,659 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2018-12-09 01:00:34,661 INFO L478 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 12 treesize of output 1 [2018-12-09 01:00:34,661 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,666 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,678 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:34,678 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:87, output treesize:63 [2018-12-09 01:00:34,709 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,710 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,711 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,713 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,713 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,714 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 41 [2018-12-09 01:00:34,714 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,754 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 48 [2018-12-09 01:00:34,756 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-12-09 01:00:34,758 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:34,760 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-12-09 01:00:34,760 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,764 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,773 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,804 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 64 [2018-12-09 01:00:34,806 INFO L478 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 12 treesize of output 1 [2018-12-09 01:00:34,807 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,817 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,840 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 62 [2018-12-09 01:00:34,842 INFO L478 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 10 treesize of output 9 [2018-12-09 01:00:34,842 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,851 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,867 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:34,868 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 11 variables, input treesize:116, output treesize:61 [2018-12-09 01:00:34,921 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 60 [2018-12-09 01:00:34,924 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 7 treesize of output 1 [2018-12-09 01:00:34,924 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,934 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 7 treesize of output 1 [2018-12-09 01:00:34,934 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,938 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 7 treesize of output 1 [2018-12-09 01:00:34,939 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,942 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 3 [2018-12-09 01:00:34,943 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,944 INFO L267 ElimStorePlain]: Start of recursive call 2: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,950 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:34,951 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 9 variables, input treesize:70, output treesize:3 [2018-12-09 01:00:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:34,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:00:34,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2018-12-09 01:00:34,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 01:00:34,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 01:00:34,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-12-09 01:00:34,968 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 14 states. [2018-12-09 01:00:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:35,753 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2018-12-09 01:00:35,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 01:00:35,753 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2018-12-09 01:00:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:35,755 INFO L225 Difference]: With dead ends: 73 [2018-12-09 01:00:35,755 INFO L226 Difference]: Without dead ends: 71 [2018-12-09 01:00:35,755 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2018-12-09 01:00:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-12-09 01:00:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 29. [2018-12-09 01:00:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-09 01:00:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-12-09 01:00:35,759 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2018-12-09 01:00:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:35,759 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-12-09 01:00:35,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 01:00:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-12-09 01:00:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 01:00:35,759 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:35,759 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:35,760 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:35,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:35,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1217737546, now seen corresponding path program 1 times [2018-12-09 01:00:35,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:35,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:35,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:35,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:35,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:35,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:00:35,796 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:00:35,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:35,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:00:35,823 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2018-12-09 01:00:35,826 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:35,826 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:35,863 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 42 [2018-12-09 01:00:35,866 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2018-12-09 01:00:35,869 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:35,870 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-09 01:00:35,870 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:35,877 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:35,902 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2018-12-09 01:00:35,905 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:35,906 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2018-12-09 01:00:35,906 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:35,922 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:35,930 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 30 [2018-12-09 01:00:35,931 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-12-09 01:00:35,950 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 01:00:35,968 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 01:00:35,983 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 01:00:36,004 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2018-12-09 01:00:36,006 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:36,006 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,021 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 42 [2018-12-09 01:00:36,029 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2018-12-09 01:00:36,031 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:36,032 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2018-12-09 01:00:36,033 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,048 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:36,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 30 [2018-12-09 01:00:36,058 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-12-09 01:00:36,075 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 01:00:36,102 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2018-12-09 01:00:36,105 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:36,107 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-09 01:00:36,107 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,111 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,131 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 01:00:36,145 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 01:00:36,168 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 9 xjuncts. [2018-12-09 01:00:36,169 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:77, output treesize:242 [2018-12-09 01:00:36,253 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 45 [2018-12-09 01:00:36,261 INFO L478 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2018-12-09 01:00:36,262 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-09 01:00:36,285 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 41 treesize of output 36 [2018-12-09 01:00:36,286 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,308 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 36 treesize of output 29 [2018-12-09 01:00:36,308 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,327 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 01:00:36,358 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2018-12-09 01:00:36,360 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 11 treesize of output 3 [2018-12-09 01:00:36,361 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,367 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-12-09 01:00:36,367 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,370 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,375 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2018-12-09 01:00:36,378 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 26 treesize of output 19 [2018-12-09 01:00:36,378 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,398 INFO L478 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2018-12-09 01:00:36,399 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-12-09 01:00:36,416 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 19 treesize of output 14 [2018-12-09 01:00:36,417 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,434 INFO L267 ElimStorePlain]: Start of recursive call 9: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 01:00:36,442 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2018-12-09 01:00:36,444 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 29 treesize of output 24 [2018-12-09 01:00:36,444 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,455 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2018-12-09 01:00:36,455 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,465 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2018-12-09 01:00:36,466 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,472 INFO L267 ElimStorePlain]: Start of recursive call 13: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,498 INFO L478 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 37 treesize of output 33 [2018-12-09 01:00:36,499 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 3 [2018-12-09 01:00:36,499 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,505 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,523 INFO L478 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 22 treesize of output 18 [2018-12-09 01:00:36,525 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 3 [2018-12-09 01:00:36,525 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,527 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,537 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 6 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,537 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 8 variables, input treesize:110, output treesize:7 [2018-12-09 01:00:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:36,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:00:36,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-12-09 01:00:36,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:00:36,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:00:36,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:00:36,561 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2018-12-09 01:00:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:36,745 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2018-12-09 01:00:36,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:00:36,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-12-09 01:00:36,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:36,745 INFO L225 Difference]: With dead ends: 53 [2018-12-09 01:00:36,746 INFO L226 Difference]: Without dead ends: 31 [2018-12-09 01:00:36,746 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-12-09 01:00:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-09 01:00:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-09 01:00:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-09 01:00:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-12-09 01:00:36,750 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2018-12-09 01:00:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:36,750 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-12-09 01:00:36,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:00:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-12-09 01:00:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 01:00:36,750 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:36,750 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:36,751 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:36,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1661807805, now seen corresponding path program 1 times [2018-12-09 01:00:36,751 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:36,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:36,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:36,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:36,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:36,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:00:36,871 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:00:36,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:36,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:00:36,896 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-12-09 01:00:36,898 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-12-09 01:00:36,899 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,901 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,906 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:36,907 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2018-12-09 01:00:36,935 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:36,936 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:36,937 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-12-09 01:00:36,937 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,949 INFO L478 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 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:36,952 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:00:36,952 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,961 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-12-09 01:00:36,963 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:36,963 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,967 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,970 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,979 INFO L478 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 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:36,981 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:36,982 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,989 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2018-12-09 01:00:36,991 INFO L478 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 12 treesize of output 15 [2018-12-09 01:00:36,991 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,996 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:36,999 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,005 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,005 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 5 variables, input treesize:65, output treesize:19 [2018-12-09 01:00:37,037 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 108 [2018-12-09 01:00:37,039 INFO L478 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 32 treesize of output 1 [2018-12-09 01:00:37,039 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,044 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,053 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 66 [2018-12-09 01:00:37,054 INFO L478 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 32 treesize of output 1 [2018-12-09 01:00:37,054 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,057 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,061 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2018-12-09 01:00:37,062 INFO L478 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 18 treesize of output 17 [2018-12-09 01:00:37,063 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,064 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,066 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,066 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:112, output treesize:26 [2018-12-09 01:00:37,092 INFO L478 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 33 treesize of output 27 [2018-12-09 01:00:37,093 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 18 [2018-12-09 01:00:37,093 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,096 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,100 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-12-09 01:00:37,101 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 17 treesize of output 9 [2018-12-09 01:00:37,101 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,103 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,105 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,105 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:40, output treesize:9 [2018-12-09 01:00:37,118 INFO L478 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 19 treesize of output 15 [2018-12-09 01:00:37,119 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 3 [2018-12-09 01:00:37,119 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,120 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,121 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,121 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2018-12-09 01:00:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:37,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:00:37,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2018-12-09 01:00:37,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 01:00:37,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 01:00:37,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2018-12-09 01:00:37,153 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 18 states. [2018-12-09 01:00:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:37,545 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2018-12-09 01:00:37,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 01:00:37,545 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 24 [2018-12-09 01:00:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:37,546 INFO L225 Difference]: With dead ends: 70 [2018-12-09 01:00:37,546 INFO L226 Difference]: Without dead ends: 58 [2018-12-09 01:00:37,546 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-12-09 01:00:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-12-09 01:00:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2018-12-09 01:00:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 01:00:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-12-09 01:00:37,550 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 24 [2018-12-09 01:00:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:37,551 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-12-09 01:00:37,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 01:00:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-12-09 01:00:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 01:00:37,551 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:37,551 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:37,551 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:37,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:37,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1612091137, now seen corresponding path program 1 times [2018-12-09 01:00:37,551 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:37,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:37,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:37,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:37,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:37,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:00:37,668 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:00:37,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:37,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:00:37,690 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-12-09 01:00:37,692 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-12-09 01:00:37,692 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,694 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,701 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,701 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:20 [2018-12-09 01:00:37,714 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:37,715 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:37,717 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:37,718 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2018-12-09 01:00:37,718 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,738 INFO L478 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 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:37,741 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:00:37,741 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,750 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-12-09 01:00:37,752 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:00:37,752 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,756 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,759 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,775 INFO L478 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 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:37,776 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:37,777 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,783 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2018-12-09 01:00:37,785 INFO L478 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 12 treesize of output 11 [2018-12-09 01:00:37,785 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,788 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,791 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,803 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,803 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:82, output treesize:62 [2018-12-09 01:00:37,831 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:37,834 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:37,836 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:37,841 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:37,841 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 33 [2018-12-09 01:00:37,841 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,897 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2018-12-09 01:00:37,902 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 11 [2018-12-09 01:00:37,902 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,911 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:37,944 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:37,948 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:37,977 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:37,979 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 145 [2018-12-09 01:00:37,994 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 41 [2018-12-09 01:00:38,020 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2018-12-09 01:00:38,020 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,038 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2018-12-09 01:00:38,039 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,047 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,074 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 134 [2018-12-09 01:00:38,077 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 01:00:38,080 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:38,081 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-09 01:00:38,081 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,086 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,100 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,115 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,140 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 55 [2018-12-09 01:00:38,144 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 18 treesize of output 11 [2018-12-09 01:00:38,144 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,158 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 66 [2018-12-09 01:00:38,160 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2018-12-09 01:00:38,163 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:38,164 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 45 [2018-12-09 01:00:38,164 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,169 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,176 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,180 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,194 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:38,194 INFO L202 ElimStorePlain]: Needed 18 recursive calls to eliminate 8 variables, input treesize:232, output treesize:94 [2018-12-09 01:00:38,252 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2018-12-09 01:00:38,253 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-12-09 01:00:38,254 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,258 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 11 treesize of output 3 [2018-12-09 01:00:38,258 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,260 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,269 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:38,269 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:108, output treesize:82 [2018-12-09 01:00:38,294 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 48 [2018-12-09 01:00:38,296 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2018-12-09 01:00:38,296 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,301 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-12-09 01:00:38,302 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,305 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-12-09 01:00:38,305 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,307 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,309 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,310 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:83, output treesize:4 [2018-12-09 01:00:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:38,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:00:38,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2018-12-09 01:00:38,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 01:00:38,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 01:00:38,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-12-09 01:00:38,338 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 14 states. [2018-12-09 01:00:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:38,847 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2018-12-09 01:00:38,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 01:00:38,847 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2018-12-09 01:00:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:38,847 INFO L225 Difference]: With dead ends: 88 [2018-12-09 01:00:38,847 INFO L226 Difference]: Without dead ends: 86 [2018-12-09 01:00:38,848 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2018-12-09 01:00:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-12-09 01:00:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 57. [2018-12-09 01:00:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-12-09 01:00:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-12-09 01:00:38,857 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2018-12-09 01:00:38,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:38,857 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-12-09 01:00:38,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 01:00:38,857 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-12-09 01:00:38,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 01:00:38,858 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:38,858 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:38,858 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:38,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2004183828, now seen corresponding path program 2 times [2018-12-09 01:00:38,858 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:38,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:38,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:38,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:38,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:38,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:00:38,949 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:00:38,955 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:00:38,972 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:00:38,972 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:00:38,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:00:38,976 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-12-09 01:00:38,978 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-12-09 01:00:38,978 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,980 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:38,985 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:38,985 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:23 [2018-12-09 01:00:39,001 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,002 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,002 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-12-09 01:00:39,002 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,016 INFO L478 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 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:39,018 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:00:39,018 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,028 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-12-09 01:00:39,030 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:39,030 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,034 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,037 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,047 INFO L478 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 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:39,049 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:39,049 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,055 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2018-12-09 01:00:39,057 INFO L478 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 12 treesize of output 11 [2018-12-09 01:00:39,057 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,061 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,064 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,071 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,071 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:74, output treesize:46 [2018-12-09 01:00:39,089 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 75 [2018-12-09 01:00:39,092 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 11 [2018-12-09 01:00:39,092 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,097 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,108 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2018-12-09 01:00:39,110 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 11 [2018-12-09 01:00:39,110 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,113 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,118 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,119 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:98, output treesize:44 [2018-12-09 01:00:39,162 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 48 [2018-12-09 01:00:39,164 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-09 01:00:39,164 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,170 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2018-12-09 01:00:39,170 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:39,174 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:39,180 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2018-12-09 01:00:39,181 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-12-09 01:00:39,182 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,185 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-12-09 01:00:39,185 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,186 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,190 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,190 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:71, output treesize:10 [2018-12-09 01:00:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:39,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:00:39,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-12-09 01:00:39,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 01:00:39,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 01:00:39,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-12-09 01:00:39,213 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 13 states. [2018-12-09 01:00:39,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:39,435 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-12-09 01:00:39,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:00:39,435 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2018-12-09 01:00:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:39,435 INFO L225 Difference]: With dead ends: 73 [2018-12-09 01:00:39,435 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 01:00:39,436 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-12-09 01:00:39,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 01:00:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-12-09 01:00:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-09 01:00:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-12-09 01:00:39,441 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 27 [2018-12-09 01:00:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:39,441 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-12-09 01:00:39,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 01:00:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-12-09 01:00:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 01:00:39,442 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:39,442 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:39,442 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:39,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:39,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1835345302, now seen corresponding path program 3 times [2018-12-09 01:00:39,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:39,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:39,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:39,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:00:39,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:39,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:00:39,670 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:00:39,677 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:00:39,717 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 01:00:39,717 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:00:39,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:00:39,728 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,729 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 27 [2018-12-09 01:00:39,731 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-09 01:00:39,731 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,735 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,740 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,741 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:30, output treesize:27 [2018-12-09 01:00:39,757 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,758 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,759 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,759 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 34 [2018-12-09 01:00:39,760 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,782 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:39,784 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:39,785 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,795 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-12-09 01:00:39,797 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:39,797 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,801 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,804 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,823 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:39,825 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:00:39,825 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,831 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,832 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 29 [2018-12-09 01:00:39,833 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-09 01:00:39,834 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,838 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,840 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,853 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,853 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:89, output treesize:61 [2018-12-09 01:00:39,878 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,881 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2018-12-09 01:00:39,883 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,884 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 37 [2018-12-09 01:00:39,884 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,890 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,908 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,908 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,910 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,910 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 67 [2018-12-09 01:00:39,917 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,926 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 43 [2018-12-09 01:00:39,926 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-12-09 01:00:39,936 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,948 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:39,949 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:99, output treesize:65 [2018-12-09 01:00:39,964 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,965 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,966 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,967 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,968 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:39,969 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 37 [2018-12-09 01:00:39,969 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,003 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,004 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,005 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,006 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,006 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 131 [2018-12-09 01:00:40,021 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 59 [2018-12-09 01:00:40,022 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-12-09 01:00:40,047 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,049 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,050 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,053 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,054 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 131 [2018-12-09 01:00:40,057 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 28 [2018-12-09 01:00:40,057 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,072 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,082 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,102 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,105 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 01:00:40,105 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2018-12-09 01:00:40,108 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 23 treesize of output 15 [2018-12-09 01:00:40,109 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,117 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,118 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,119 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,124 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 55 [2018-12-09 01:00:40,126 INFO L478 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 16 treesize of output 15 [2018-12-09 01:00:40,126 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,131 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,135 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,147 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,147 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:161, output treesize:77 [2018-12-09 01:00:40,173 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,174 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,175 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,176 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,177 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,178 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,180 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,181 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,182 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 183 [2018-12-09 01:00:40,206 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 96 treesize of output 118 [2018-12-09 01:00:40,208 INFO L267 ElimStorePlain]: Start of recursive call 3: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 7 xjuncts. [2018-12-09 01:00:40,238 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,268 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,269 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,270 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,275 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 88 [2018-12-09 01:00:40,278 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 15 [2018-12-09 01:00:40,278 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,283 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,292 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:157, output treesize:79 [2018-12-09 01:00:40,385 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-12-09 01:00:40,387 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 3 [2018-12-09 01:00:40,387 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,389 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,398 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,398 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:97, output treesize:82 [2018-12-09 01:00:40,438 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,439 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,440 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,442 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 57 [2018-12-09 01:00:40,443 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 5 [2018-12-09 01:00:40,443 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,449 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-12-09 01:00:40,450 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,453 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 11 treesize of output 3 [2018-12-09 01:00:40,453 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,454 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,460 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:40,461 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:90, output treesize:53 [2018-12-09 01:00:40,545 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,547 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,549 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,552 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,554 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,556 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:40,557 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 60 [2018-12-09 01:00:40,595 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 51 [2018-12-09 01:00:40,600 INFO L267 ElimStorePlain]: Start of recursive call 3: 10 dim-0 vars, End of recursive call: 10 dim-0 vars, and 7 xjuncts. [2018-12-09 01:00:40,657 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-12-09 01:00:40,658 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,668 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-12-09 01:00:40,668 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,675 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,683 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:40,683 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:51, output treesize:4 [2018-12-09 01:00:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:40,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:00:40,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2018-12-09 01:00:40,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 01:00:40,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 01:00:40,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2018-12-09 01:00:40,756 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 22 states. [2018-12-09 01:00:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:41,466 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2018-12-09 01:00:41,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 01:00:41,467 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 27 [2018-12-09 01:00:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:41,467 INFO L225 Difference]: With dead ends: 91 [2018-12-09 01:00:41,467 INFO L226 Difference]: Without dead ends: 89 [2018-12-09 01:00:41,468 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2018-12-09 01:00:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-12-09 01:00:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 49. [2018-12-09 01:00:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-09 01:00:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2018-12-09 01:00:41,475 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 27 [2018-12-09 01:00:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:41,475 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2018-12-09 01:00:41,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 01:00:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2018-12-09 01:00:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 01:00:41,476 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:41,476 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:41,476 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:41,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:41,476 INFO L82 PathProgramCache]: Analyzing trace with hash 814276948, now seen corresponding path program 1 times [2018-12-09 01:00:41,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:41,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:41,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:41,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:00:41,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:41,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:00:41,729 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:00:41,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:00:41,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:00:41,754 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-12-09 01:00:41,756 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-12-09 01:00:41,756 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,758 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,761 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,761 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2018-12-09 01:00:41,776 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,777 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,781 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2018-12-09 01:00:41,781 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,802 INFO L478 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 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:41,804 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:00:41,804 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,814 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-12-09 01:00:41,816 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:00:41,816 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,820 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,824 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,838 INFO L478 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 0 case distinctions, treesize of input 27 treesize of output 20 [2018-12-09 01:00:41,840 INFO L478 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 8 treesize of output 7 [2018-12-09 01:00:41,840 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,847 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2018-12-09 01:00:41,849 INFO L478 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 12 treesize of output 11 [2018-12-09 01:00:41,849 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,853 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,856 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,866 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,866 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:79, output treesize:59 [2018-12-09 01:00:41,894 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2018-12-09 01:00:41,897 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,900 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-09 01:00:41,900 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,909 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,932 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 44 [2018-12-09 01:00:41,934 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,935 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 37 [2018-12-09 01:00:41,935 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,941 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,951 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,951 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:97, output treesize:59 [2018-12-09 01:00:41,956 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,956 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,958 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,960 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,960 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 79 [2018-12-09 01:00:41,961 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:41,994 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:41,996 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 132 [2018-12-09 01:00:41,998 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 21 [2018-12-09 01:00:41,998 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,020 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 114 [2018-12-09 01:00:42,022 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:00:42,022 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,035 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,047 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,073 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 44 [2018-12-09 01:00:42,077 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 18 treesize of output 11 [2018-12-09 01:00:42,077 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,088 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 55 [2018-12-09 01:00:42,089 INFO L478 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 16 treesize of output 15 [2018-12-09 01:00:42,090 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,095 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,099 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,114 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,114 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:162, output treesize:97 [2018-12-09 01:00:42,154 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,157 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,160 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,162 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,169 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,170 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 85 [2018-12-09 01:00:42,170 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,237 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:42,241 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:42,296 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:42,302 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:42,362 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,369 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 199 [2018-12-09 01:00:42,374 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,386 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 55 [2018-12-09 01:00:42,412 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,416 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 46 [2018-12-09 01:00:42,416 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,437 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,440 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2018-12-09 01:00:42,440 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,454 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,501 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 186 [2018-12-09 01:00:42,504 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 01:00:42,507 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,509 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-09 01:00:42,509 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,514 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,545 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,578 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,629 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 65 [2018-12-09 01:00:42,633 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,635 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2018-12-09 01:00:42,640 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,644 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 61 [2018-12-09 01:00:42,644 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:42,654 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:42,675 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 99 [2018-12-09 01:00:42,679 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2018-12-09 01:00:42,682 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 01:00:42,683 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 53 [2018-12-09 01:00:42,684 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,688 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,696 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,702 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,721 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:42,722 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 9 variables, input treesize:354, output treesize:159 [2018-12-09 01:00:42,794 INFO L478 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 15 treesize of output 11 [2018-12-09 01:00:42,796 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 11 treesize of output 3 [2018-12-09 01:00:42,796 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,798 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,825 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-12-09 01:00:42,826 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:173, output treesize:162 [2018-12-09 01:00:42,859 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 81 [2018-12-09 01:00:42,861 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-12-09 01:00:42,861 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,868 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2018-12-09 01:00:42,868 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,872 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-12-09 01:00:42,872 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,875 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-12-09 01:00:42,875 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,877 INFO L267 ElimStorePlain]: Start of recursive call 2: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,879 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:00:42,879 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:163, output treesize:4 [2018-12-09 01:00:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:00:42,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:00:42,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-12-09 01:00:42,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 01:00:42,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 01:00:42,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2018-12-09 01:00:42,919 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 18 states. [2018-12-09 01:00:44,169 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2018-12-09 01:00:44,559 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-12-09 01:00:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:00:44,833 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2018-12-09 01:00:44,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-09 01:00:44,833 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2018-12-09 01:00:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:00:44,834 INFO L225 Difference]: With dead ends: 128 [2018-12-09 01:00:44,834 INFO L226 Difference]: Without dead ends: 126 [2018-12-09 01:00:44,834 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=238, Invalid=1093, Unknown=1, NotChecked=0, Total=1332 [2018-12-09 01:00:44,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-12-09 01:00:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 52. [2018-12-09 01:00:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-09 01:00:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2018-12-09 01:00:44,843 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 27 [2018-12-09 01:00:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:00:44,843 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2018-12-09 01:00:44,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 01:00:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2018-12-09 01:00:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 01:00:44,844 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:00:44,844 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:00:44,844 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:00:44,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:00:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash -513246438, now seen corresponding path program 1 times [2018-12-09 01:00:44,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:00:44,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:00:44,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:44,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:00:44,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:00:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:00:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:00:44,876 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 01:00:44,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:00:44 BoogieIcfgContainer [2018-12-09 01:00:44,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:00:44,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:00:44,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:00:44,906 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:00:44,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:00:32" (3/4) ... [2018-12-09 01:00:44,908 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 01:00:44,944 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_dd474837-8b45-40f3-93eb-c3261ca17722/bin-2019/uautomizer/witness.graphml [2018-12-09 01:00:44,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:00:44,945 INFO L168 Benchmark]: Toolchain (without parser) took 12562.72 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 361.2 MB). Free memory was 956.0 MB in the beginning and 956.5 MB in the end (delta: -540.6 kB). Peak memory consumption was 360.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:00:44,945 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:00:44,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-09 01:00:44,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:00:44,946 INFO L168 Benchmark]: Boogie Preprocessor took 19.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:00:44,946 INFO L168 Benchmark]: RCFGBuilder took 224.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. [2018-12-09 01:00:44,946 INFO L168 Benchmark]: TraceAbstraction took 11996.87 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 231.2 MB). Free memory was 1.1 GB in the beginning and 956.5 MB in the end (delta: 122.3 MB). Peak memory consumption was 353.5 MB. Max. memory is 11.5 GB. [2018-12-09 01:00:44,946 INFO L168 Benchmark]: Witness Printer took 38.38 ms. Allocated memory is still 1.4 GB. Free memory is still 956.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:00:44,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 224.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11996.87 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 231.2 MB). Free memory was 1.1 GB in the beginning and 956.5 MB in the end (delta: 122.3 MB). Peak memory consumption was 353.5 MB. Max. memory is 11.5 GB. * Witness Printer took 38.38 ms. Allocated memory is still 1.4 GB. Free memory is still 956.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* null = malloc(sizeof(SLL)); [L995] null->colour = BLACK [L996] null->next = ((void*)0) [L998] SLL* list = malloc(sizeof(SLL)); [L999] list->next = null [L1000] list->colour = BLACK [L1002] SLL* end = list; VAL [end={24:0}, list={24:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, null={15:0}] [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] end->next = malloc(sizeof(SLL)) [L1009] EXPR end->next [L1009] end = end->next [L1010] end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] end->colour = RED [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1022] end->colour = BLACK VAL [end={26:0}, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list VAL [end={24:0}, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] [L1030] COND FALSE !(!(null != end)) VAL [end={24:0}, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] [L1031] EXPR end->colour VAL [end={24:0}, end->colour=1, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] [L1031] COND FALSE !(!(BLACK == end->colour)) [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={24:0}, end->colour=1, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={14:0}, end->colour=0, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) VAL [end={26:0}, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] [L1039] EXPR end->colour VAL [end={26:0}, end->colour=1, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() VAL [end={26:0}, list={24:0}, malloc(sizeof(SLL))={26:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={24:0}, malloc(sizeof(SLL))={14:0}, null={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 4 error locations. UNSAFE Result, 11.9s OverallTime, 13 OverallIterations, 3 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 335 SDtfs, 843 SDslu, 1874 SDs, 0 SdLazy, 1749 SolverSat, 360 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 152 SyntacticMatches, 12 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 275 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 454 NumberOfCodeBlocks, 454 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 407 ConstructedInterpolants, 49 QuantifiedInterpolants, 272800 SizeOfPredicates, 106 NumberOfNonLiveVariables, 1042 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 7/92 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...