./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_equal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 30338be39fffa4ca48f26b164131a7bd561f2b23 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 30338be39fffa4ca48f26b164131a7bd561f2b23 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_37 term size 37 --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:34:28,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:28,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:28,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:28,737 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:28,738 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:28,739 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:28,740 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:28,741 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:28,742 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:28,743 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:28,743 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:28,744 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:28,744 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:28,745 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:28,745 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:28,746 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:28,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:28,748 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:28,749 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:28,751 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:28,751 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:28,752 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:28,753 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:28,753 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:28,753 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:28,754 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:28,755 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:28,755 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:28,756 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:28,756 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:28,756 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:28,756 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:28,756 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:28,757 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:28,757 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:28,758 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 08:34:28,765 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:28,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:28,765 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:34:28,766 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 08:34:28,766 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:28,766 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:28,766 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:28,767 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:28,767 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:34:28,767 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:28,767 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:34:28,767 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:28,767 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:34:28,767 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:34:28,768 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:34:28,768 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:34:28,768 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:28,768 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:28,768 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:34:28,768 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:28,768 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:28,769 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:34:28,769 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:34:28,769 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:34:28,769 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:28,769 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:34:28,769 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:34:28,769 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:28,769 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:34:28,771 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:34:28,771 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_452527f5-b180-4802-9085-4558e2cbed0d/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 -> 30338be39fffa4ca48f26b164131a7bd561f2b23 [2018-11-18 08:34:28,796 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:28,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:28,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:28,810 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:28,810 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:28,811 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_append_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 08:34:28,858 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data/be72df47f/d928d89ddfe54417a03c5e1e5b234f11/FLAGc4d378a6b [2018-11-18 08:34:29,241 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:29,242 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/sv-benchmarks/c/list-simple/dll2n_append_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 08:34:29,253 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data/be72df47f/d928d89ddfe54417a03c5e1e5b234f11/FLAGc4d378a6b [2018-11-18 08:34:29,618 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data/be72df47f/d928d89ddfe54417a03c5e1e5b234f11 [2018-11-18 08:34:29,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:29,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:34:29,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:29,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:29,624 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:29,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc0d945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29, skipping insertion in model container [2018-11-18 08:34:29,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:29,660 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:29,858 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:29,865 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:29,938 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:29,972 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:29,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29 WrapperNode [2018-11-18 08:34:29,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:29,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:29,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:29,973 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:29,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:30,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:30,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:30,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:30,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:30,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:30,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:30,014 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:30,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 [2018-11-18 08:34:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:34:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-18 08:34:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-18 08:34:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 08:34:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-18 08:34:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-18 08:34:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-18 08:34:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2018-11-18 08:34:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:34:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:34:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 08:34:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 08:34:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 08:34:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 08:34:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 08:34:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 08:34:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 08:34:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 08:34:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 08:34:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 08:34:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 08:34:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 08:34:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 08:34:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 08:34:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 08:34:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 08:34:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 08:34:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 08:34:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 08:34:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 08:34:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 08:34:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 08:34:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 08:34:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 08:34:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 08:34:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 08:34:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 08:34:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 08:34:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 08:34:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 08:34:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 08:34:30,361 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:30,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:30 BoogieIcfgContainer [2018-11-18 08:34:30,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:30,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:34:30,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:34:30,364 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:34:30,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:29" (1/3) ... [2018-11-18 08:34:30,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426f430f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:30, skipping insertion in model container [2018-11-18 08:34:30,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (2/3) ... [2018-11-18 08:34:30,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426f430f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:30, skipping insertion in model container [2018-11-18 08:34:30,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:30" (3/3) ... [2018-11-18 08:34:30,366 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 08:34:30,372 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:34:30,376 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:34:30,387 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:34:30,404 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:30,405 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:34:30,405 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:34:30,405 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:34:30,405 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:30,405 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:30,405 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:34:30,405 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:30,405 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:34:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-11-18 08:34:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 08:34:30,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:30,426 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:30,427 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:30,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:30,432 INFO L82 PathProgramCache]: Analyzing trace with hash 122180057, now seen corresponding path program 1 times [2018-11-18 08:34:30,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:30,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:30,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:30,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:30,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:30,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:34:30,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:34:30,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:34:30,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:34:30,564 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2018-11-18 08:34:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:30,580 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2018-11-18 08:34:30,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:34:30,581 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-11-18 08:34:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:30,586 INFO L225 Difference]: With dead ends: 96 [2018-11-18 08:34:30,586 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 08:34:30,589 INFO L604 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 [2018-11-18 08:34:30,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 08:34:30,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 08:34:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 08:34:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-18 08:34:30,615 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 29 [2018-11-18 08:34:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:30,615 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-18 08:34:30,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:34:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-18 08:34:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 08:34:30,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:30,617 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:30,617 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:30,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:30,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1382804278, now seen corresponding path program 1 times [2018-11-18 08:34:30,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:30,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:30,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:30,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:30,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:30,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 08:34:30,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 08:34:30,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 08:34:30,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-18 08:34:30,818 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 10 states. [2018-11-18 08:34:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:30,972 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-11-18 08:34:30,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 08:34:30,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-11-18 08:34:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:30,974 INFO L225 Difference]: With dead ends: 58 [2018-11-18 08:34:30,974 INFO L226 Difference]: Without dead ends: 55 [2018-11-18 08:34:30,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-11-18 08:34:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-18 08:34:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2018-11-18 08:34:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 08:34:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2018-11-18 08:34:30,982 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 31 [2018-11-18 08:34:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:30,984 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2018-11-18 08:34:30,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 08:34:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2018-11-18 08:34:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 08:34:30,985 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:30,985 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:30,985 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:30,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1382802604, now seen corresponding path program 1 times [2018-11-18 08:34:30,985 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:30,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:30,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:30,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:31,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:31,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 08:34:31,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 08:34:31,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 08:34:31,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 08:34:31,133 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 11 states. [2018-11-18 08:34:31,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:31,301 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2018-11-18 08:34:31,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 08:34:31,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-11-18 08:34:31,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:31,302 INFO L225 Difference]: With dead ends: 55 [2018-11-18 08:34:31,302 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 08:34:31,302 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2018-11-18 08:34:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 08:34:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2018-11-18 08:34:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 08:34:31,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2018-11-18 08:34:31,308 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 31 [2018-11-18 08:34:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:31,309 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2018-11-18 08:34:31,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 08:34:31,309 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2018-11-18 08:34:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 08:34:31,309 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:31,309 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:31,310 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:31,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2039778257, now seen corresponding path program 1 times [2018-11-18 08:34:31,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:31,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:31,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:31,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 08:34:31,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:31,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 08:34:31,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 08:34:31,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 08:34:31,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:34:31,361 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 5 states. [2018-11-18 08:34:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:31,392 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2018-11-18 08:34:31,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 08:34:31,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-11-18 08:34:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:31,393 INFO L225 Difference]: With dead ends: 86 [2018-11-18 08:34:31,393 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 08:34:31,394 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 08:34:31,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 08:34:31,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-11-18 08:34:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 08:34:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2018-11-18 08:34:31,399 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 34 [2018-11-18 08:34:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:31,399 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2018-11-18 08:34:31,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 08:34:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2018-11-18 08:34:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 08:34:31,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:31,400 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:31,400 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:31,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:31,400 INFO L82 PathProgramCache]: Analyzing trace with hash 146027796, now seen corresponding path program 1 times [2018-11-18 08:34:31,400 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:31,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:31,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:31,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 08:34:31,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:31,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 08:34:31,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 08:34:31,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 08:34:31,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:34:31,434 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 3 states. [2018-11-18 08:34:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:31,450 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2018-11-18 08:34:31,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 08:34:31,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-18 08:34:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:31,451 INFO L225 Difference]: With dead ends: 92 [2018-11-18 08:34:31,451 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 08:34:31,451 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:34:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 08:34:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-11-18 08:34:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 08:34:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2018-11-18 08:34:31,456 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 45 [2018-11-18 08:34:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:31,456 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2018-11-18 08:34:31,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 08:34:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2018-11-18 08:34:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 08:34:31,457 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:31,458 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:31,458 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:31,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:31,458 INFO L82 PathProgramCache]: Analyzing trace with hash -363445294, now seen corresponding path program 1 times [2018-11-18 08:34:31,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:31,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:31,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:31,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 08:34:31,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:34:31,509 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 [2018-11-18 08:34:31,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:31,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 08:34:31,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:34:31,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 08:34:31,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 08:34:31,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 08:34:31,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 08:34:31,629 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 6 states. [2018-11-18 08:34:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:31,677 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2018-11-18 08:34:31,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 08:34:31,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2018-11-18 08:34:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:31,679 INFO L225 Difference]: With dead ends: 92 [2018-11-18 08:34:31,679 INFO L226 Difference]: Without dead ends: 59 [2018-11-18 08:34:31,679 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:34:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-18 08:34:31,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-11-18 08:34:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 08:34:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2018-11-18 08:34:31,685 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 45 [2018-11-18 08:34:31,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:31,685 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2018-11-18 08:34:31,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 08:34:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2018-11-18 08:34:31,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 08:34:31,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:31,687 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:31,687 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:31,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:31,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2036224401, now seen corresponding path program 1 times [2018-11-18 08:34:31,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:31,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:31,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:31,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 08:34:32,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:34:32,301 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 [2018-11-18 08:34:32,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:32,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:32,359 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 08:34:32,360 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:34:32,366 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:34:32,366 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 08:34:33,966 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:34:33,967 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:34:33,968 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:34:33,968 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-11-18 08:34:33,971 INFO L477 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 30 treesize of output 34 [2018-11-18 08:34:33,971 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:34:33,978 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:34:33,985 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 08:34:33,986 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:35 [2018-11-18 08:34:34,023 INFO L477 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 11 treesize of output 8 [2018-11-18 08:34:34,024 INFO L477 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 [2018-11-18 08:34:34,025 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:34:34,026 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:34:34,035 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 08:34:34,035 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:46, output treesize:39 [2018-11-18 08:34:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 16 refuted. 2 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 08:34:47,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:34:47,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 36 [2018-11-18 08:34:47,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-18 08:34:47,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-18 08:34:47,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1139, Unknown=12, NotChecked=0, Total=1260 [2018-11-18 08:34:47,411 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 36 states. [2018-11-18 08:34:51,312 WARN L180 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2018-11-18 08:34:56,249 WARN L180 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2018-11-18 08:35:00,110 WARN L180 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2018-11-18 08:35:00,821 WARN L180 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 15 [2018-11-18 08:35:05,862 WARN L180 SmtUtils]: Spent 946.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-18 08:35:12,548 WARN L180 SmtUtils]: Spent 3.94 s on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-18 08:35:13,160 WARN L180 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-18 08:35:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:13,464 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2018-11-18 08:35:13,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 08:35:13,465 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 56 [2018-11-18 08:35:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:13,468 INFO L225 Difference]: With dead ends: 113 [2018-11-18 08:35:13,468 INFO L226 Difference]: Without dead ends: 74 [2018-11-18 08:35:13,469 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=204, Invalid=2038, Unknown=14, NotChecked=0, Total=2256 [2018-11-18 08:35:13,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-11-18 08:35:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2018-11-18 08:35:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-18 08:35:13,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2018-11-18 08:35:13,479 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 56 [2018-11-18 08:35:13,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:13,479 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2018-11-18 08:35:13,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-18 08:35:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2018-11-18 08:35:13,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 08:35:13,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:13,481 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:13,481 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:13,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:13,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1909798462, now seen corresponding path program 1 times [2018-11-18 08:35:13,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:13,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:13,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:13,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:13,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 08:35:14,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:14,111 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 [2018-11-18 08:35:14,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:14,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:14,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 08:35:14,170 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:35:14,174 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:35:14,174 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 08:35:19,251 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:35:19,251 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:35:19,252 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:35:19,252 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-11-18 08:35:19,255 INFO L477 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 30 treesize of output 34 [2018-11-18 08:35:19,255 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:35:19,261 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:35:19,269 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. [2018-11-18 08:35:19,269 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:35 [2018-11-18 08:35:19,311 INFO L477 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 11 treesize of output 8 [2018-11-18 08:35:19,313 INFO L477 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 8 treesize of output 7 [2018-11-18 08:35:19,313 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:35:19,315 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:35:19,323 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:35:19,324 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:51 [2018-11-18 08:35:23,104 WARN L180 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-18 08:35:24,372 WARN L180 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-18 08:35:24,939 WARN L180 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-18 08:35:25,677 WARN L180 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-18 08:36:15,995 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2018-11-18 08:36:15,999 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,000 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,001 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,002 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,003 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 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 [2018-11-18 08:36:16,003 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,026 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,027 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,038 INFO L477 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 104 [2018-11-18 08:36:16,040 INFO L477 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 15 treesize of output 18 [2018-11-18 08:36:16,044 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,044 INFO L477 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 18 treesize of output 27 [2018-11-18 08:36:16,045 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,060 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,083 INFO L477 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 89 [2018-11-18 08:36:16,086 INFO L477 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 14 treesize of output 13 [2018-11-18 08:36:16,086 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,116 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 81 [2018-11-18 08:36:16,120 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,136 INFO L477 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 4 case distinctions, treesize of input 29 treesize of output 56 [2018-11-18 08:36:16,137 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-11-18 08:36:16,167 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:36:16,198 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:36:16,229 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:36:16,267 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 08:36:16,267 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 7 variables, input treesize:244, output treesize:302 [2018-11-18 08:36:16,462 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-11-18 08:36:16,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 66 [2018-11-18 08:36:16,490 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2018-11-18 08:36:16,490 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,501 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-11-18 08:36:16,502 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,509 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,509 INFO L477 Elim1Store]: Elim1 did not use 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 33 [2018-11-18 08:36:16,510 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,514 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 59 [2018-11-18 08:36:16,540 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2018-11-18 08:36:16,540 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,546 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,546 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,547 INFO L477 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 17 treesize of output 15 [2018-11-18 08:36:16,547 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,551 INFO L477 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 [2018-11-18 08:36:16,551 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,553 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 59 [2018-11-18 08:36:16,574 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,575 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:36:16,575 INFO L477 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 17 treesize of output 15 [2018-11-18 08:36:16,576 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,582 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2018-11-18 08:36:16,582 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,587 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2018-11-18 08:36:16,588 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,590 INFO L267 ElimStorePlain]: Start of recursive call 10: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,611 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:36:16,611 INFO L202 ElimStorePlain]: Needed 13 recursive calls to eliminate 13 variables, input treesize:314, output treesize:4 [2018-11-18 08:36:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 08:36:16,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:36:16,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27] total 44 [2018-11-18 08:36:16,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-18 08:36:16,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-18 08:36:16,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1707, Unknown=41, NotChecked=0, Total=1892 [2018-11-18 08:36:16,635 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 44 states. [2018-11-18 08:36:32,427 WARN L180 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-11-18 08:36:44,214 WARN L180 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2018-11-18 08:36:53,910 WARN L180 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2018-11-18 08:37:09,378 WARN L180 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2018-11-18 08:37:49,696 WARN L180 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 34 [2018-11-18 08:37:55,450 WARN L180 SmtUtils]: Spent 978.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-11-18 08:38:02,796 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-18 08:38:19,035 WARN L180 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 58 [2018-11-18 08:38:24,069 WARN L180 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2018-11-18 08:38:28,252 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2018-11-18 08:38:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:38:30,419 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2018-11-18 08:38:30,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 08:38:30,420 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 57 [2018-11-18 08:38:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:38:30,421 INFO L225 Difference]: With dead ends: 96 [2018-11-18 08:38:30,421 INFO L226 Difference]: Without dead ends: 93 [2018-11-18 08:38:30,422 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 113.1s TimeCoverageRelationStatistics Valid=277, Invalid=3197, Unknown=66, NotChecked=0, Total=3540 [2018-11-18 08:38:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-18 08:38:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2018-11-18 08:38:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-18 08:38:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2018-11-18 08:38:30,430 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 57 [2018-11-18 08:38:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:38:30,430 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2018-11-18 08:38:30,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-18 08:38:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2018-11-18 08:38:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 08:38:30,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:38:30,432 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:38:30,432 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:38:30,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:38:30,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1909800136, now seen corresponding path program 1 times [2018-11-18 08:38:30,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:38:30,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:38:30,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:38:30,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:38:30,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:38:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:38:31,212 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 73 [2018-11-18 08:38:31,392 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2018-11-18 08:38:31,649 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 77 [2018-11-18 08:38:31,954 WARN L180 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2018-11-18 08:38:32,200 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-11-18 08:38:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 08:38:32,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:38:32,316 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 [2018-11-18 08:38:32,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:38:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:38:32,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:38:32,356 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 08:38:32,357 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:38:32,362 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:38:32,362 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-18 08:38:33,016 INFO L477 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 11 treesize of output 8 [2018-11-18 08:38:33,017 INFO L477 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 [2018-11-18 08:38:33,018 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:38:33,019 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:38:33,024 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. [2018-11-18 08:38:33,024 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:30 [2018-11-18 08:38:33,184 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:38:33,185 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:38:33,186 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:38:33,186 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-11-18 08:38:33,189 INFO L477 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 30 treesize of output 34 [2018-11-18 08:38:33,190 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:38:33,197 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:38:33,206 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. [2018-11-18 08:38:33,206 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:41 [2018-11-18 08:38:33,269 INFO L477 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 11 treesize of output 8 [2018-11-18 08:38:33,271 INFO L477 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 [2018-11-18 08:38:33,271 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:38:33,273 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:38:33,287 INFO L477 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 11 treesize of output 8 [2018-11-18 08:38:33,289 INFO L477 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 [2018-11-18 08:38:33,289 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:38:33,291 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:38:33,303 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:38:33,303 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:63, output treesize:61 [2018-11-18 08:38:38,745 WARN L180 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 34 [2018-11-18 08:38:41,863 WARN L180 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 40 [2018-11-18 08:38:45,217 WARN L180 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 40 [2018-11-18 08:38:46,918 WARN L180 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 40 [2018-11-18 08:39:21,995 WARN L180 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 76 [2018-11-18 08:39:22,002 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,007 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,009 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,012 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,013 INFO L477 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 [2018-11-18 08:39:22,013 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:22,121 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,124 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,175 INFO L477 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 190 [2018-11-18 08:39:22,181 INFO L477 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 15 treesize of output 18 [2018-11-18 08:39:22,190 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,191 INFO L477 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 18 treesize of output 27 [2018-11-18 08:39:22,191 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:22,209 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:22,285 INFO L477 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 175 [2018-11-18 08:39:22,291 INFO L477 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 14 treesize of output 13 [2018-11-18 08:39:22,291 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:22,354 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 167 [2018-11-18 08:39:22,361 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,380 INFO L477 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 4 case distinctions, treesize of input 29 treesize of output 56 [2018-11-18 08:39:22,381 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-11-18 08:39:22,469 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:39:22,605 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:39:22,712 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:39:22,863 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 162 [2018-11-18 08:39:22,866 INFO L477 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 25 treesize of output 28 [2018-11-18 08:39:22,870 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,870 INFO L477 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 47 [2018-11-18 08:39:22,870 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:22,877 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:22,914 INFO L477 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 103 treesize of output 121 [2018-11-18 08:39:22,917 INFO L477 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 14 treesize of output 13 [2018-11-18 08:39:22,917 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:22,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 96 [2018-11-18 08:39:22,946 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:22,963 INFO L477 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 4 case distinctions, treesize of input 35 treesize of output 82 [2018-11-18 08:39:22,963 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 4 xjuncts. [2018-11-18 08:39:22,997 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:39:23,024 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:39:23,062 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:39:23,080 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 160 [2018-11-18 08:39:23,083 INFO L477 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 25 treesize of output 28 [2018-11-18 08:39:23,087 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:23,087 INFO L477 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 47 [2018-11-18 08:39:23,087 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,095 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,131 INFO L477 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 103 treesize of output 121 [2018-11-18 08:39:23,134 INFO L477 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 14 treesize of output 13 [2018-11-18 08:39:23,134 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,179 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 96 [2018-11-18 08:39:23,182 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:23,182 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 08:39:23,185 INFO L477 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 0 case distinctions, treesize of input 35 treesize of output 62 [2018-11-18 08:39:23,185 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,197 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,203 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,218 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,235 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 160 [2018-11-18 08:39:23,238 INFO L477 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 25 treesize of output 28 [2018-11-18 08:39:23,241 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:23,242 INFO L477 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 47 [2018-11-18 08:39:23,242 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,249 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,289 INFO L477 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 103 treesize of output 121 [2018-11-18 08:39:23,306 INFO L477 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 14 treesize of output 13 [2018-11-18 08:39:23,306 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,340 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 96 [2018-11-18 08:39:23,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:23,344 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:23,345 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 08:39:23,347 INFO L477 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 0 case distinctions, treesize of input 35 treesize of output 62 [2018-11-18 08:39:23,348 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,363 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,372 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,392 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,500 INFO L477 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 165 treesize of output 172 [2018-11-18 08:39:23,502 INFO L477 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 [2018-11-18 08:39:23,503 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,523 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,528 INFO L477 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 144 treesize of output 151 [2018-11-18 08:39:23,531 INFO L477 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 [2018-11-18 08:39:23,531 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,550 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,555 INFO L477 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 144 treesize of output 151 [2018-11-18 08:39:23,558 INFO L477 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 [2018-11-18 08:39:23,558 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,577 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:23,667 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-18 08:39:23,667 INFO L202 ElimStorePlain]: Needed 36 recursive calls to eliminate 10 variables, input treesize:434, output treesize:565 [2018-11-18 08:39:24,321 WARN L180 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-18 08:39:24,339 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 134 [2018-11-18 08:39:24,341 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2018-11-18 08:39:24,342 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:39:24,360 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,361 INFO L477 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 33 treesize of output 24 [2018-11-18 08:39:24,362 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,375 INFO L477 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 65 treesize of output 50 [2018-11-18 08:39:24,375 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,385 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:39:24,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2018-11-18 08:39:24,439 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-11-18 08:39:24,439 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:39:24,448 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,449 INFO L477 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 15 treesize of output 8 [2018-11-18 08:39:24,450 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,459 INFO L477 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 7 [2018-11-18 08:39:24,459 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,464 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,518 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 134 [2018-11-18 08:39:24,520 INFO L477 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 109 treesize of output 88 [2018-11-18 08:39:24,520 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,534 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,535 INFO L477 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 27 treesize of output 20 [2018-11-18 08:39:24,535 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,550 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2018-11-18 08:39:24,551 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:39:24,562 INFO L267 ElimStorePlain]: Start of recursive call 10: 3 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:39:24,611 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 185 [2018-11-18 08:39:24,614 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2018-11-18 08:39:24,614 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:39:24,643 INFO L477 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 11 [2018-11-18 08:39:24,643 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,659 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 33 [2018-11-18 08:39:24,666 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-11-18 08:39:24,685 INFO L267 ElimStorePlain]: Start of recursive call 14: 3 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-18 08:39:24,750 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 75 [2018-11-18 08:39:24,752 INFO L477 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 40 treesize of output 39 [2018-11-18 08:39:24,753 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,775 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,784 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 52 [2018-11-18 08:39:24,784 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 2 xjuncts. [2018-11-18 08:39:24,802 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-11-18 08:39:24,802 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,804 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2018-11-18 08:39:24,804 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,816 INFO L267 ElimStorePlain]: Start of recursive call 18: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 08:39:24,820 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 88 [2018-11-18 08:39:24,822 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2018-11-18 08:39:24,822 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,832 INFO L477 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 30 treesize of output 27 [2018-11-18 08:39:24,832 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,842 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,843 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,843 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 41 treesize of output 36 [2018-11-18 08:39:24,845 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,851 INFO L267 ElimStorePlain]: Start of recursive call 23: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2018-11-18 08:39:24,890 INFO L477 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 7 [2018-11-18 08:39:24,890 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,901 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:39:24,903 INFO L477 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 23 treesize of output 16 [2018-11-18 08:39:24,903 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,930 INFO L267 ElimStorePlain]: Start of recursive call 27: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:24,958 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 6 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 08:39:24,959 INFO L202 ElimStorePlain]: Needed 29 recursive calls to eliminate 13 variables, input treesize:598, output treesize:26 [2018-11-18 08:39:25,017 INFO L477 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 [2018-11-18 08:39:25,019 INFO L477 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 [2018-11-18 08:39:25,019 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:39:25,022 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:25,024 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:39:25,024 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2018-11-18 08:39:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 08:39:25,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:39:25,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26] total 45 [2018-11-18 08:39:25,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-11-18 08:39:25,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-11-18 08:39:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1840, Unknown=22, NotChecked=0, Total=1980 [2018-11-18 08:39:25,125 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 45 states. [2018-11-18 08:39:41,819 WARN L180 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-11-18 08:39:48,275 WARN L180 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2018-11-18 08:40:51,306 WARN L180 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-11-18 08:41:11,773 WARN L180 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2018-11-18 08:41:25,926 WARN L180 SmtUtils]: Spent 5.76 s on a formula simplification. DAG size of input: 165 DAG size of output: 93 [2018-11-18 08:41:49,443 WARN L180 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2018-11-18 08:41:52,963 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 106 DAG size of output: 106 [2018-11-18 08:41:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:41:56,508 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2018-11-18 08:41:56,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 08:41:56,508 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 57 [2018-11-18 08:41:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:41:56,509 INFO L225 Difference]: With dead ends: 98 [2018-11-18 08:41:56,509 INFO L226 Difference]: Without dead ends: 96 [2018-11-18 08:41:56,510 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 117.9s TimeCoverageRelationStatistics Valid=297, Invalid=4343, Unknown=52, NotChecked=0, Total=4692 [2018-11-18 08:41:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-18 08:41:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2018-11-18 08:41:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-18 08:41:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2018-11-18 08:41:56,524 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 57 [2018-11-18 08:41:56,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:41:56,524 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2018-11-18 08:41:56,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-11-18 08:41:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2018-11-18 08:41:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 08:41:56,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:41:56,525 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:41:56,525 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:41:56,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:41:56,526 INFO L82 PathProgramCache]: Analyzing trace with hash -574656965, now seen corresponding path program 1 times [2018-11-18 08:41:56,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:41:56,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:41:56,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:41:56,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:41:56,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:41:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:41:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 08:41:57,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:41:57,227 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 [2018-11-18 08:41:57,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:41:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:41:57,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:41:57,262 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 08:41:57,262 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:41:57,265 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:41:57,265 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 08:42:03,206 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:42:03,207 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 125372 column 44: unknown constant dll_create_~new_head~0.base at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript$DiffTransformer.checkOrAddAxiom(DiffWrapperScript.java:164) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript$DiffTransformer.convertApplicationTerm(DiffWrapperScript.java:174) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:320) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:253) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:112) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:136) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:82) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-18 08:42:03,210 INFO L168 Benchmark]: Toolchain (without parser) took 453588.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 955.5 MB in the beginning and 1.0 GB in the end (delta: -79.6 MB). Peak memory consumption was 83.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:42:03,210 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:42:03,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2018-11-18 08:42:03,211 INFO L168 Benchmark]: Boogie Preprocessor took 40.46 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:42:03,211 INFO L168 Benchmark]: RCFGBuilder took 348.14 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: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:42:03,211 INFO L168 Benchmark]: TraceAbstraction took 452847.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 26.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.8 MB). Peak memory consumption was 62.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:42:03,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 348.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 452847.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 26.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.8 MB). Peak memory consumption was 62.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 125372 column 44: unknown constant dll_create_~new_head~0.base de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 125372 column 44: unknown constant dll_create_~new_head~0.base: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 08:42:04,639 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:42:04,640 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:42:04,649 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:42:04,649 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:42:04,650 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:42:04,651 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:42:04,652 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:42:04,653 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:42:04,653 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:42:04,654 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:42:04,654 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:42:04,655 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:42:04,656 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:42:04,657 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:42:04,657 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:42:04,658 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:42:04,660 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:42:04,661 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:42:04,662 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:42:04,663 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:42:04,664 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:42:04,665 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:42:04,666 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:42:04,666 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:42:04,667 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:42:04,668 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:42:04,668 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:42:04,669 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:42:04,670 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:42:04,670 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:42:04,670 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:42:04,670 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:42:04,670 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:42:04,671 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:42:04,672 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:42:04,673 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 08:42:04,683 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:42:04,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:42:04,684 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:42:04,684 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 08:42:04,684 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:42:04,685 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:42:04,685 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:42:04,685 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:42:04,685 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:42:04,685 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:42:04,685 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:42:04,685 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:42:04,685 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:42:04,687 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:42:04,687 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 08:42:04,687 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 08:42:04,687 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:42:04,687 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:42:04,687 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:42:04,687 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:42:04,688 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:42:04,688 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:42:04,688 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:42:04,688 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:42:04,688 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:42:04,688 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:42:04,688 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:42:04,689 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:42:04,689 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 08:42:04,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:42:04,689 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 08:42:04,689 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 08:42:04,689 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_452527f5-b180-4802-9085-4558e2cbed0d/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 -> 30338be39fffa4ca48f26b164131a7bd561f2b23 [2018-11-18 08:42:04,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:42:04,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:42:04,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:42:04,732 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:42:04,732 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:42:04,733 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_append_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 08:42:04,783 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data/e7943d410/494f840910eb484eab8a730271db82af/FLAG9e77c2f07 [2018-11-18 08:42:05,155 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:42:05,155 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/sv-benchmarks/c/list-simple/dll2n_append_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 08:42:05,162 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data/e7943d410/494f840910eb484eab8a730271db82af/FLAG9e77c2f07 [2018-11-18 08:42:05,171 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/data/e7943d410/494f840910eb484eab8a730271db82af [2018-11-18 08:42:05,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:42:05,174 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:42:05,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:42:05,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:42:05,178 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:42:05,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a466cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05, skipping insertion in model container [2018-11-18 08:42:05,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:42:05,220 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:42:05,454 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:42:05,463 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:42:05,502 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:42:05,585 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:42:05,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05 WrapperNode [2018-11-18 08:42:05,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:42:05,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:42:05,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:42:05,586 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:42:05,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (1/1) ... [2018-11-18 08:42:05,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:42:05,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:42:05,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:42:05,627 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:42:05,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 [2018-11-18 08:42:05,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:42:05,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:42:05,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-18 08:42:05,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-18 08:42:05,664 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 08:42:05,665 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-18 08:42:05,665 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-18 08:42:05,665 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-18 08:42:05,665 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2018-11-18 08:42:05,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:42:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:42:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-18 08:42:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-18 08:42:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 08:42:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 08:42:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 08:42:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 08:42:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 08:42:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 08:42:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 08:42:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 08:42:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 08:42:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 08:42:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 08:42:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 08:42:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 08:42:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 08:42:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 08:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:42:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:42:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 08:42:06,023 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:42:06,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:42:06 BoogieIcfgContainer [2018-11-18 08:42:06,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:42:06,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:42:06,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:42:06,027 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:42:06,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:42:05" (1/3) ... [2018-11-18 08:42:06,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a91c77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:42:06, skipping insertion in model container [2018-11-18 08:42:06,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:05" (2/3) ... [2018-11-18 08:42:06,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a91c77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:42:06, skipping insertion in model container [2018-11-18 08:42:06,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:42:06" (3/3) ... [2018-11-18 08:42:06,029 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal_true-unreach-call_true-valid-memsafety.i [2018-11-18 08:42:06,035 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:42:06,040 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:42:06,049 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:42:06,069 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:42:06,069 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:42:06,069 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:42:06,069 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:42:06,069 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:42:06,070 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:42:06,070 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:42:06,070 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:42:06,070 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:42:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-11-18 08:42:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 08:42:06,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:42:06,086 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:42:06,087 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:42:06,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:42:06,091 INFO L82 PathProgramCache]: Analyzing trace with hash 122180057, now seen corresponding path program 1 times [2018-11-18 08:42:06,094 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 08:42:06,094 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 08:42:06,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:06,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:42:06,188 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:42:06,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:42:06,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:42:06,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:42:06,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:42:06,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:42:06,208 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2018-11-18 08:42:06,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:42:06,227 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2018-11-18 08:42:06,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:42:06,229 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-11-18 08:42:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:42:06,235 INFO L225 Difference]: With dead ends: 96 [2018-11-18 08:42:06,235 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 08:42:06,237 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:42:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 08:42:06,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 08:42:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 08:42:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-18 08:42:06,262 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 29 [2018-11-18 08:42:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:42:06,262 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-18 08:42:06,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:42:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-18 08:42:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 08:42:06,263 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:42:06,264 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:42:06,264 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:42:06,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:42:06,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1382804278, now seen corresponding path program 1 times [2018-11-18 08:42:06,265 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 08:42:06,265 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 08:42:06,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:06,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:42:06,361 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:42:06,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:42:06,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 08:42:06,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 08:42:06,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 08:42:06,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:42:06,367 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-11-18 08:42:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:42:06,423 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2018-11-18 08:42:06,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 08:42:06,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-11-18 08:42:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:42:06,425 INFO L225 Difference]: With dead ends: 74 [2018-11-18 08:42:06,425 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 08:42:06,426 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 08:42:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 08:42:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-11-18 08:42:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 08:42:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-11-18 08:42:06,433 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 31 [2018-11-18 08:42:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:42:06,434 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-11-18 08:42:06,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 08:42:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-11-18 08:42:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 08:42:06,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:42:06,435 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:42:06,435 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:42:06,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:42:06,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1355056645, now seen corresponding path program 1 times [2018-11-18 08:42:06,436 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 08:42:06,436 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 08:42:06,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:06,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:42:06,519 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:42:06,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:42:06,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 08:42:06,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 08:42:06,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 08:42:06,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:42:06,521 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 3 states. [2018-11-18 08:42:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:42:06,547 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2018-11-18 08:42:06,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 08:42:06,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-11-18 08:42:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:42:06,549 INFO L225 Difference]: With dead ends: 80 [2018-11-18 08:42:06,549 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 08:42:06,549 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:42:06,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 08:42:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2018-11-18 08:42:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 08:42:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2018-11-18 08:42:06,555 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 42 [2018-11-18 08:42:06,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:42:06,555 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2018-11-18 08:42:06,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 08:42:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2018-11-18 08:42:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 08:42:06,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:42:06,557 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:42:06,557 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:42:06,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:42:06,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1495605255, now seen corresponding path program 1 times [2018-11-18 08:42:06,559 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 08:42:06,559 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 08:42:06,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:06,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:42:06,699 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 08:42:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 08:42:06,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:42:06,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-18 08:42:06,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 08:42:06,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 08:42:06,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:42:06,924 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 9 states. [2018-11-18 08:42:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:42:07,040 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2018-11-18 08:42:07,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:42:07,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2018-11-18 08:42:07,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:42:07,041 INFO L225 Difference]: With dead ends: 80 [2018-11-18 08:42:07,041 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 08:42:07,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-18 08:42:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 08:42:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-11-18 08:42:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 08:42:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2018-11-18 08:42:07,046 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 42 [2018-11-18 08:42:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:42:07,047 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2018-11-18 08:42:07,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 08:42:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2018-11-18 08:42:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 08:42:07,047 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:42:07,048 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:42:07,048 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:42:07,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:42:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash -402455896, now seen corresponding path program 1 times [2018-11-18 08:42:07,049 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 08:42:07,049 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 08:42:07,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:07,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:07,271 INFO L477 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 11 treesize of output 8 [2018-11-18 08:42:07,274 INFO L477 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 [2018-11-18 08:42:07,275 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,277 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,281 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,281 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2018-11-18 08:42:07,315 INFO L477 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 16 treesize of output 12 [2018-11-18 08:42:07,326 INFO L477 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 12 treesize of output 4 [2018-11-18 08:42:07,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,328 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,330 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,330 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-11-18 08:42:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-18 08:42:07,345 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:42:07,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:42:07,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 08:42:07,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 08:42:07,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 08:42:07,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-18 08:42:07,348 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 11 states. [2018-11-18 08:42:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:42:07,579 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-11-18 08:42:07,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 08:42:07,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2018-11-18 08:42:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:42:07,580 INFO L225 Difference]: With dead ends: 66 [2018-11-18 08:42:07,581 INFO L226 Difference]: Without dead ends: 63 [2018-11-18 08:42:07,581 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-11-18 08:42:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-18 08:42:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2018-11-18 08:42:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-18 08:42:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2018-11-18 08:42:07,588 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 53 [2018-11-18 08:42:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:42:07,589 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2018-11-18 08:42:07,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 08:42:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2018-11-18 08:42:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 08:42:07,591 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:42:07,591 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:42:07,592 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:42:07,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:42:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash -402454222, now seen corresponding path program 1 times [2018-11-18 08:42:07,593 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 08:42:07,593 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 08:42:07,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:07,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:07,733 INFO L477 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 11 treesize of output 8 [2018-11-18 08:42:07,736 INFO L477 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 [2018-11-18 08:42:07,736 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,738 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,742 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,743 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-11-18 08:42:07,799 INFO L477 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 11 treesize of output 8 [2018-11-18 08:42:07,801 INFO L477 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 [2018-11-18 08:42:07,802 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,804 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,817 INFO L477 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 11 treesize of output 8 [2018-11-18 08:42:07,822 INFO L477 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 [2018-11-18 08:42:07,826 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,829 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,837 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,837 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:30, output treesize:19 [2018-11-18 08:42:07,887 INFO L477 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 [2018-11-18 08:42:07,890 INFO L477 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 [2018-11-18 08:42:07,891 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,893 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,904 INFO L477 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 [2018-11-18 08:42:07,907 INFO L477 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 7 [2018-11-18 08:42:07,907 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,910 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,916 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,916 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:38, output treesize:16 [2018-11-18 08:42:07,943 INFO L477 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 [2018-11-18 08:42:07,945 INFO L477 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 [2018-11-18 08:42:07,946 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,947 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,953 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:07,954 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:9 [2018-11-18 08:42:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-18 08:42:07,975 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:42:07,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:42:07,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 08:42:07,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 08:42:07,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 08:42:07,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-11-18 08:42:07,978 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 12 states. [2018-11-18 08:42:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:42:08,461 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2018-11-18 08:42:08,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 08:42:08,462 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2018-11-18 08:42:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:42:08,463 INFO L225 Difference]: With dead ends: 63 [2018-11-18 08:42:08,463 INFO L226 Difference]: Without dead ends: 61 [2018-11-18 08:42:08,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2018-11-18 08:42:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-18 08:42:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2018-11-18 08:42:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 08:42:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2018-11-18 08:42:08,470 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 53 [2018-11-18 08:42:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:42:08,470 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2018-11-18 08:42:08,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 08:42:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2018-11-18 08:42:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 08:42:08,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:42:08,471 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:42:08,471 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:42:08,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:42:08,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2036224401, now seen corresponding path program 1 times [2018-11-18 08:42:08,471 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 08:42:08,472 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 08:42:08,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:08,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:08,639 INFO L477 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 11 treesize of output 8 [2018-11-18 08:42:08,641 INFO L477 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 [2018-11-18 08:42:08,641 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:08,643 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:08,649 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:08,649 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2018-11-18 08:42:10,710 WARN L854 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.base (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (_ bv4 32) (_ bv0 32)) (_ bv8 32) (_ bv0 32))))) is different from true [2018-11-18 08:42:14,755 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 19 [2018-11-18 08:42:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 2 not checked. [2018-11-18 08:42:14,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 08:42:15,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:42:15,055 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/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 [2018-11-18 08:42:15,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:15,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:15,115 INFO L477 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 11 treesize of output 8 [2018-11-18 08:42:15,117 INFO L477 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 [2018-11-18 08:42:15,118 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:15,120 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:15,125 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:15,125 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2018-11-18 08:42:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 2 not checked. [2018-11-18 08:42:15,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 08:42:15,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:42:15,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-18 08:42:15,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 08:42:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 08:42:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=268, Unknown=2, NotChecked=32, Total=342 [2018-11-18 08:42:15,366 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 18 states. [2018-11-18 08:42:17,564 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 18 [2018-11-18 08:42:22,050 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 24 [2018-11-18 08:42:26,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:42:26,482 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2018-11-18 08:42:26,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 08:42:26,483 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2018-11-18 08:42:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:42:26,483 INFO L225 Difference]: With dead ends: 90 [2018-11-18 08:42:26,484 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 08:42:26,484 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=69, Invalid=485, Unknown=2, NotChecked=44, Total=600 [2018-11-18 08:42:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 08:42:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-18 08:42:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 08:42:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-11-18 08:42:26,488 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 56 [2018-11-18 08:42:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:42:26,489 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-11-18 08:42:26,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 08:42:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-11-18 08:42:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 08:42:26,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:42:26,490 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:42:26,490 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:42:26,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:42:26,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1909798462, now seen corresponding path program 1 times [2018-11-18 08:42:26,491 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 08:42:26,491 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 08:42:26,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:26,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:26,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 08:42:26,646 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:26,649 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:26,650 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 08:42:27,452 WARN L854 $PredicateComparison]: unable to prove that (exists ((|node_create_#t~malloc2.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |node_create_#t~malloc2.base|) (_ bv0 1)) (= |c_#valid| (store |c_old(#valid)| |node_create_#t~malloc2.base| (_ bv1 1))))) is different from true [2018-11-18 08:42:28,623 WARN L180 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-18 08:42:29,521 WARN L180 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-18 08:42:33,272 WARN L180 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-18 08:42:33,331 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:33,333 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:33,334 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:33,335 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-11-18 08:42:33,339 INFO L477 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 30 treesize of output 34 [2018-11-18 08:42:33,339 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:33,350 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:33,361 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. [2018-11-18 08:42:33,362 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:36 [2018-11-18 08:42:33,420 INFO L477 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 11 treesize of output 8 [2018-11-18 08:42:33,424 INFO L477 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 8 treesize of output 7 [2018-11-18 08:42:33,424 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:33,429 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:33,448 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:42:33,448 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:54 [2018-11-18 08:42:38,769 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-18 08:42:40,841 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 26 [2018-11-18 08:42:44,925 WARN L180 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 26 [2018-11-18 08:42:47,024 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 26 [2018-11-18 08:42:49,047 WARN L854 $PredicateComparison]: unable to prove that (exists ((dll_append_~last~0.offset (_ BitVec 32)) (node_create_~temp~0.offset (_ BitVec 32)) (dll_append_~new_last~0.offset (_ BitVec 32)) (dll_append_~new_last~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| dll_append_~new_last~0.base) (_ bv0 1)) (= |c_#memory_$Pointer$.base| (let ((.cse2 (store |c_old(#memory_$Pointer$.base)| dll_append_~new_last~0.base (store (store (select |c_old(#memory_$Pointer$.base)| dll_append_~new_last~0.base) (bvadd node_create_~temp~0.offset (_ bv4 32)) (_ bv0 32)) (bvadd node_create_~temp~0.offset (_ bv8 32)) (_ bv0 32))))) (let ((.cse1 (select (select .cse2 |c_dll_append_#in~head.base|) |c_dll_append_#in~head.offset|))) (let ((.cse0 (store .cse2 .cse1 (store (select .cse2 .cse1) (bvadd dll_append_~last~0.offset (_ bv4 32)) dll_append_~new_last~0.base)))) (store .cse0 dll_append_~new_last~0.base (store (select .cse0 dll_append_~new_last~0.base) (bvadd dll_append_~new_last~0.offset (_ bv8 32)) .cse1)))))))) is different from true [2018-11-18 08:42:50,264 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2018-11-18 08:42:50,284 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:50,294 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:50,302 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:50,303 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 08:42:50,304 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2018-11-18 08:42:50,304 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:50,486 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:50,493 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:50,566 INFO L303 Elim1Store]: Index analysis took 104 ms [2018-11-18 08:42:50,567 INFO L477 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 104 [2018-11-18 08:42:50,576 INFO L477 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 15 treesize of output 18 [2018-11-18 08:42:50,586 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:50,587 INFO L477 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 18 treesize of output 27 [2018-11-18 08:42:50,588 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:50,611 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:50,710 INFO L477 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 89 [2018-11-18 08:42:50,717 INFO L477 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 14 treesize of output 13 [2018-11-18 08:42:50,718 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:50,807 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 81 [2018-11-18 08:42:50,813 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:50,882 INFO L477 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 4 case distinctions, treesize of input 29 treesize of output 56 [2018-11-18 08:42:50,883 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-11-18 08:42:51,020 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:42:51,127 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:42:51,243 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 08:42:51,409 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 08:42:51,410 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 7 variables, input treesize:245, output treesize:302 [2018-11-18 08:42:51,655 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-11-18 08:42:51,674 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 66 [2018-11-18 08:42:51,679 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2018-11-18 08:42:51,680 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:51,712 INFO L477 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 27 treesize of output 24 [2018-11-18 08:42:51,713 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:51,742 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:51,743 INFO L477 Elim1Store]: Elim1 did not use 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 33 [2018-11-18 08:42:51,744 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:51,759 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:51,929 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 59 [2018-11-18 08:42:51,935 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2018-11-18 08:42:51,936 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:51,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 43 treesize of output 25 [2018-11-18 08:42:51,962 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:51,974 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2018-11-18 08:42:51,974 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:51,978 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:52,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 59 [2018-11-18 08:42:52,077 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:52,078 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:42:52,079 INFO L477 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 17 treesize of output 15 [2018-11-18 08:42:52,080 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:52,097 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2018-11-18 08:42:52,097 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:52,107 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2018-11-18 08:42:52,108 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:52,112 INFO L267 ElimStorePlain]: Start of recursive call 10: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:52,131 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:52,132 INFO L202 ElimStorePlain]: Needed 13 recursive calls to eliminate 13 variables, input treesize:314, output treesize:4 [2018-11-18 08:42:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 16 not checked. [2018-11-18 08:42:52,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 08:42:54,071 WARN L180 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 08:42:54,397 WARN L180 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-11-18 08:42:54,554 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-11-18 08:42:59,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:42:59,498 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_452527f5-b180-4802-9085-4558e2cbed0d/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:42:59,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:42:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:42:59,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:42:59,868 INFO L477 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 6 treesize of output 5 [2018-11-18 08:42:59,868 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:42:59,872 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:42:59,872 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2018-11-18 08:43:00,309 INFO L477 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 11 treesize of output 8 [2018-11-18 08:43:00,312 INFO L477 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 [2018-11-18 08:43:00,312 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:00,314 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:43:00,329 INFO L477 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 11 treesize of output 8 [2018-11-18 08:43:00,331 INFO L477 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 [2018-11-18 08:43:00,331 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:00,333 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:43:00,341 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:43:00,341 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:35, output treesize:28 [2018-11-18 08:43:15,197 WARN L854 $PredicateComparison]: unable to prove that (exists ((dll_append_~new_last~0.base (_ BitVec 32))) (and (= |c_#memory_$Pointer$.base| (let ((.cse2 (store |c_old(#memory_$Pointer$.base)| dll_append_~new_last~0.base (store (store (select |c_old(#memory_$Pointer$.base)| dll_append_~new_last~0.base) (_ bv4 32) (_ bv0 32)) (_ bv8 32) (_ bv0 32))))) (let ((.cse1 (select (select .cse2 |c_dll_append_#in~head.base|) |c_dll_append_#in~head.offset|))) (let ((.cse0 (store .cse2 .cse1 (store (select .cse2 .cse1) (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| dll_append_~new_last~0.base (store (store (select |c_old(#memory_$Pointer$.offset)| dll_append_~new_last~0.base) (_ bv4 32) (_ bv0 32)) (_ bv8 32) (_ bv0 32))) |c_dll_append_#in~head.base|) |c_dll_append_#in~head.offset|) (_ bv4 32)) dll_append_~new_last~0.base)))) (store .cse0 dll_append_~new_last~0.base (store (select .cse0 dll_append_~new_last~0.base) (_ bv8 32) .cse1)))))) (= (select |c_old(#valid)| dll_append_~new_last~0.base) (_ bv0 1)))) is different from true [2018-11-18 08:43:16,842 WARN L180 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 109 DAG size of output: 40 [2018-11-18 08:43:16,863 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:16,868 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:16,869 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 8 [2018-11-18 08:43:16,869 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:16,940 INFO L477 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 111 treesize of output 105 [2018-11-18 08:43:16,946 INFO L477 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 105 treesize of output 99 [2018-11-18 08:43:16,947 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:16,967 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:43:17,033 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:17,170 INFO L477 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 93 [2018-11-18 08:43:20,145 WARN L180 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-11-18 08:43:20,153 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:20,154 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 70 [2018-11-18 08:43:20,162 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:20,163 INFO L477 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 55 treesize of output 72 [2018-11-18 08:43:20,164 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:20,219 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:43:21,596 INFO L477 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 83 treesize of output 85 [2018-11-18 08:43:21,600 INFO L477 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 14 treesize of output 15 [2018-11-18 08:43:21,600 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:21,635 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:43:23,056 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:23,057 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 08:43:23,096 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 66 [2018-11-18 08:43:23,100 INFO L477 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 14 treesize of output 13 [2018-11-18 08:43:23,101 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:23,133 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:23,139 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:23,145 INFO L477 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 51 treesize of output 55 [2018-11-18 08:43:23,149 INFO L477 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 52 treesize of output 67 [2018-11-18 08:43:23,150 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:23,165 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:43:23,176 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:43:23,717 INFO L477 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 69 [2018-11-18 08:43:23,722 INFO L477 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 67 treesize of output 66 [2018-11-18 08:43:23,723 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:24,036 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:24,039 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:24,040 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 08:43:24,042 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:24,049 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 75 [2018-11-18 08:43:24,057 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:24,057 INFO L477 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 [2018-11-18 08:43:24,058 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 08:43:24,089 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:43:24,114 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 08:43:24,454 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:24,485 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:24,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 77 [2018-11-18 08:43:24,546 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 08:43:24,547 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 08:43:24,748 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:43:24,749 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimCell_37 term size 37 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-18 08:43:24,751 INFO L168 Benchmark]: Toolchain (without parser) took 79577.00 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 299.4 MB). Free memory was 943.3 MB in the beginning and 959.0 MB in the end (delta: -15.7 MB). Peak memory consumption was 283.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:43:24,751 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:43:24,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:43:24,752 INFO L168 Benchmark]: Boogie Preprocessor took 40.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:43:24,752 INFO L168 Benchmark]: RCFGBuilder took 397.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:43:24,752 INFO L168 Benchmark]: TraceAbstraction took 78725.82 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 163.6 MB). Free memory was 1.1 GB in the beginning and 959.0 MB in the end (delta: 103.8 MB). Peak memory consumption was 267.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:43:24,754 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 410.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.85 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 397.16 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: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 78725.82 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 163.6 MB). Free memory was 1.1 GB in the beginning and 959.0 MB in the end (delta: 103.8 MB). Peak memory consumption was 267.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_37 term size 37 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimCell_37 term size 37: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...