./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f3e231c5b77f9ab25b28372001f508e3e47c051 .......................................................................................................................................................................................................................................................................................................................................................................................................... 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_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f3e231c5b77f9ab25b28372001f508e3e47c051 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_26 input size 33 context size 33 output size 33 --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 02:45:47,594 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 02:45:47,595 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 02:45:47,602 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 02:45:47,602 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 02:45:47,603 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 02:45:47,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 02:45:47,605 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 02:45:47,607 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 02:45:47,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 02:45:47,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 02:45:47,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 02:45:47,609 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 02:45:47,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 02:45:47,610 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 02:45:47,611 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 02:45:47,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 02:45:47,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 02:45:47,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 02:45:47,615 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 02:45:47,616 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 02:45:47,617 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 02:45:47,618 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 02:45:47,618 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 02:45:47,618 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 02:45:47,619 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 02:45:47,620 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 02:45:47,620 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 02:45:47,621 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 02:45:47,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 02:45:47,622 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 02:45:47,622 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 02:45:47,622 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 02:45:47,623 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 02:45:47,623 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 02:45:47,623 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 02:45:47,624 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 02:45:47,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 02:45:47,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 02:45:47,634 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 02:45:47,635 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 02:45:47,635 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 02:45:47,635 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 02:45:47,635 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 02:45:47,635 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 02:45:47,635 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 02:45:47,635 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 02:45:47,636 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 02:45:47,636 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 02:45:47,636 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 02:45:47,636 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 02:45:47,636 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 02:45:47,636 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 02:45:47,637 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 02:45:47,637 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 02:45:47,637 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 02:45:47,637 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 02:45:47,637 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 02:45:47,637 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 02:45:47,637 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 02:45:47,638 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 02:45:47,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 02:45:47,638 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 02:45:47,638 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 02:45:47,638 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 02:45:47,638 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:45:47,638 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 02:45:47,639 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 02:45:47,639 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 02:45:47,639 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 02:45:47,639 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 02:45:47,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 02:45:47,639 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 02:45:47,639 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan 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 -> Taipan 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 -> 1f3e231c5b77f9ab25b28372001f508e3e47c051 [2018-12-03 02:45:47,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 02:45:47,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 02:45:47,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 02:45:47,676 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 02:45:47,676 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 02:45:47,677 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-03 02:45:47,718 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data/f5c2f702d/98629dd1d3af4601ae9fefc1967bcc9a/FLAG90ab5cb01 [2018-12-03 02:45:48,140 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 02:45:48,141 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-03 02:45:48,147 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data/f5c2f702d/98629dd1d3af4601ae9fefc1967bcc9a/FLAG90ab5cb01 [2018-12-03 02:45:48,155 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data/f5c2f702d/98629dd1d3af4601ae9fefc1967bcc9a [2018-12-03 02:45:48,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 02:45:48,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 02:45:48,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 02:45:48,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 02:45:48,160 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 02:45:48,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306c3a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48, skipping insertion in model container [2018-12-03 02:45:48,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 02:45:48,186 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 02:45:48,337 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:45:48,375 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 02:45:48,408 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:45:48,436 INFO L195 MainTranslator]: Completed translation [2018-12-03 02:45:48,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48 WrapperNode [2018-12-03 02:45:48,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 02:45:48,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 02:45:48,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 02:45:48,437 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 02:45:48,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 02:45:48,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 02:45:48,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 02:45:48,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 02:45:48,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... [2018-12-03 02:45:48,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 02:45:48,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 02:45:48,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 02:45:48,475 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 02:45:48,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:45:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2018-12-03 02:45:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2018-12-03 02:45:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-03 02:45:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-03 02:45:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 02:45:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 02:45:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 02:45:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-12-03 02:45:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-12-03 02:45:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 02:45:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 02:45:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 02:45:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 02:45:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 02:45:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2018-12-03 02:45:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2018-12-03 02:45:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-03 02:45:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2018-12-03 02:45:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2018-12-03 02:45:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 02:45:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 02:45:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 02:45:48,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 02:45:48,715 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 02:45:48,715 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 02:45:48,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:45:48 BoogieIcfgContainer [2018-12-03 02:45:48,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 02:45:48,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 02:45:48,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 02:45:48,718 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 02:45:48,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 02:45:48" (1/3) ... [2018-12-03 02:45:48,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76363a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:45:48, skipping insertion in model container [2018-12-03 02:45:48,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:48" (2/3) ... [2018-12-03 02:45:48,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76363a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:45:48, skipping insertion in model container [2018-12-03 02:45:48,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:45:48" (3/3) ... [2018-12-03 02:45:48,720 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-03 02:45:48,726 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 02:45:48,730 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 02:45:48,739 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 02:45:48,756 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 02:45:48,756 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 02:45:48,756 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 02:45:48,756 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 02:45:48,756 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 02:45:48,756 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 02:45:48,756 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 02:45:48,756 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 02:45:48,766 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-12-03 02:45:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-03 02:45:48,770 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:45:48,770 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-03 02:45:48,772 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:45:48,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:45:48,775 INFO L82 PathProgramCache]: Analyzing trace with hash -800595804, now seen corresponding path program 1 times [2018-12-03 02:45:48,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:45:48,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:45:48,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:45:48,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:45:48,809 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:45:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:45:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-03 02:45:48,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:45:48,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 02:45:48,881 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:45:48,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 02:45:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 02:45:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 02:45:48,894 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-12-03 02:45:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:45:48,908 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2018-12-03 02:45:48,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 02:45:48,908 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-12-03 02:45:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:45:48,914 INFO L225 Difference]: With dead ends: 93 [2018-12-03 02:45:48,914 INFO L226 Difference]: Without dead ends: 39 [2018-12-03 02:45:48,916 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 02:45:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-03 02:45:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-03 02:45:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-03 02:45:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-03 02:45:48,940 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2018-12-03 02:45:48,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:45:48,941 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-03 02:45:48,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 02:45:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-03 02:45:48,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-03 02:45:48,942 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:45:48,942 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-03 02:45:48,942 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:45:48,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:45:48,943 INFO L82 PathProgramCache]: Analyzing trace with hash 746795704, now seen corresponding path program 1 times [2018-12-03 02:45:48,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:45:48,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:45:48,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:45:48,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:45:48,944 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:45:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:45:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-03 02:45:49,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:45:49,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 02:45:49,011 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:45:49,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 02:45:49,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 02:45:49,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 02:45:49,012 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2018-12-03 02:45:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:45:49,046 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2018-12-03 02:45:49,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 02:45:49,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-12-03 02:45:49,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:45:49,047 INFO L225 Difference]: With dead ends: 68 [2018-12-03 02:45:49,047 INFO L226 Difference]: Without dead ends: 44 [2018-12-03 02:45:49,048 INFO L631 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 [2018-12-03 02:45:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-03 02:45:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-03 02:45:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-03 02:45:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-12-03 02:45:49,052 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2018-12-03 02:45:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:45:49,052 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-12-03 02:45:49,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 02:45:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-12-03 02:45:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-03 02:45:49,053 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:45:49,053 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:45:49,053 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:45:49,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:45:49,053 INFO L82 PathProgramCache]: Analyzing trace with hash -573414004, now seen corresponding path program 1 times [2018-12-03 02:45:49,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:45:49,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:45:49,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:45:49,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:45:49,055 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:45:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:45:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 02:45:49,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:45:49,567 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 02:45:49,568 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2018-12-03 02:45:49,569 INFO L205 CegarAbsIntRunner]: [0], [2], [4], [8], [11], [31], [34], [36], [43], [45], [47], [50], [54], [58], [59], [60], [61], [67], [69], [72], [76], [101], [107], [109], [110], [111], [112], [113], [114], [117], [118], [119], [120], [121], [122], [123], [124], [125] [2018-12-03 02:45:49,591 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 02:45:49,591 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 02:45:49,769 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 02:45:49,769 INFO L272 AbstractInterpreter]: Visited 38 different actions 71 times. Merged at 8 different actions 13 times. Never widened. Performed 755 root evaluator evaluations with a maximum evaluation depth of 3. Performed 755 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 31 variables. [2018-12-03 02:45:49,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:45:49,774 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 02:45:49,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 02:45:49,775 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 02:45:49,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:45:49,782 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 02:45:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:45:49,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 02:45:49,853 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-03 02:45:49,854 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 02:45:49,858 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:45:49,859 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-03 02:45:53,371 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:45:53,371 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:45:53,372 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:45:53,373 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-12-03 02:45:53,377 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2018-12-03 02:45:53,377 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 02:45:53,385 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:45:53,394 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. [2018-12-03 02:45:53,395 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:35 [2018-12-03 02:45:55,498 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 22 [2018-12-03 02:45:57,834 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 28 [2018-12-03 02:45:57,837 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:45:57,839 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:45:57,842 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-03 02:45:57,843 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:31 [2018-12-03 02:46:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 7 refuted. 2 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 02:46:06,167 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 02:46:06,267 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:06,269 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:06,273 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:06,273 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:33 [2018-12-03 02:46:11,113 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:11,115 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:11,324 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 02:46:11,326 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: alternation not yet supported at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:264) 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.computeBackwardSequence(IterativePredicateTransformer.java:383) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) 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.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) 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:456) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2018-12-03 02:46:11,333 INFO L168 Benchmark]: Toolchain (without parser) took 23175.42 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 222.3 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -121.1 MB). Peak memory consumption was 101.2 MB. Max. memory is 11.5 GB. [2018-12-03 02:46:11,334 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:46:11,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-03 02:46:11,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:46:11,335 INFO L168 Benchmark]: Boogie Preprocessor took 20.10 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-03 02:46:11,336 INFO L168 Benchmark]: RCFGBuilder took 240.60 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2018-12-03 02:46:11,336 INFO L168 Benchmark]: TraceAbstraction took 22615.63 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 103.5 MB. Max. memory is 11.5 GB. [2018-12-03 02:46:11,339 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.10 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 240.60 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22615.63 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 103.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: alternation not yet supported: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-03 02:46:12,633 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 02:46:12,634 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 02:46:12,640 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 02:46:12,640 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 02:46:12,641 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 02:46:12,641 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 02:46:12,642 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 02:46:12,643 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 02:46:12,643 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 02:46:12,644 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 02:46:12,644 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 02:46:12,644 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 02:46:12,645 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 02:46:12,645 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 02:46:12,646 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 02:46:12,646 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 02:46:12,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 02:46:12,648 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 02:46:12,649 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 02:46:12,649 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 02:46:12,650 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 02:46:12,651 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 02:46:12,651 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 02:46:12,651 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 02:46:12,652 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 02:46:12,652 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 02:46:12,653 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 02:46:12,653 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 02:46:12,654 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 02:46:12,654 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 02:46:12,655 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 02:46:12,655 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 02:46:12,655 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 02:46:12,656 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 02:46:12,656 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 02:46:12,656 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-03 02:46:12,666 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 02:46:12,666 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 02:46:12,667 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 02:46:12,667 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 02:46:12,667 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 02:46:12,667 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 02:46:12,667 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 02:46:12,668 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 02:46:12,668 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 02:46:12,668 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 02:46:12,668 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 02:46:12,669 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 02:46:12,669 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 02:46:12,669 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 02:46:12,669 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 02:46:12,669 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 02:46:12,669 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 02:46:12,670 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 02:46:12,670 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 02:46:12,670 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 02:46:12,670 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 02:46:12,670 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 02:46:12,670 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 02:46:12,670 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 02:46:12,671 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 02:46:12,671 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 02:46:12,671 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 02:46:12,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:46:12,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 02:46:12,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 02:46:12,672 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 02:46:12,672 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 02:46:12,672 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 02:46:12,672 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 02:46:12,672 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-03 02:46:12,672 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_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan 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 -> Taipan 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 -> 1f3e231c5b77f9ab25b28372001f508e3e47c051 [2018-12-03 02:46:12,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 02:46:12,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 02:46:12,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 02:46:12,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 02:46:12,708 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 02:46:12,709 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-03 02:46:12,747 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data/ec49fc133/7b574282037c43c0aec8d7248207a9a3/FLAGcb106d858 [2018-12-03 02:46:13,265 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 02:46:13,265 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-03 02:46:13,271 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data/ec49fc133/7b574282037c43c0aec8d7248207a9a3/FLAGcb106d858 [2018-12-03 02:46:13,729 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/data/ec49fc133/7b574282037c43c0aec8d7248207a9a3 [2018-12-03 02:46:13,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 02:46:13,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 02:46:13,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 02:46:13,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 02:46:13,734 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 02:46:13,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:46:13" (1/1) ... [2018-12-03 02:46:13,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fee259e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:13, skipping insertion in model container [2018-12-03 02:46:13,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:46:13" (1/1) ... [2018-12-03 02:46:13,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 02:46:13,765 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 02:46:13,943 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:46:13,951 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 02:46:14,026 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:46:14,053 INFO L195 MainTranslator]: Completed translation [2018-12-03 02:46:14,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14 WrapperNode [2018-12-03 02:46:14,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 02:46:14,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 02:46:14,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 02:46:14,054 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 02:46:14,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 02:46:14,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 02:46:14,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 02:46:14,076 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 02:46:14,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... [2018-12-03 02:46:14,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 02:46:14,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 02:46:14,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 02:46:14,104 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 02:46:14,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:46:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2018-12-03 02:46:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2018-12-03 02:46:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-03 02:46:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-12-03 02:46:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 02:46:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 02:46:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2018-12-03 02:46:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2018-12-03 02:46:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2018-12-03 02:46:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 02:46:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-03 02:46:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 02:46:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 02:46:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 02:46:14,587 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 02:46:14,587 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 02:46:14,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:46:14 BoogieIcfgContainer [2018-12-03 02:46:14,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 02:46:14,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 02:46:14,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 02:46:14,589 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 02:46:14,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 02:46:13" (1/3) ... [2018-12-03 02:46:14,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24978ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:46:14, skipping insertion in model container [2018-12-03 02:46:14,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:46:14" (2/3) ... [2018-12-03 02:46:14,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24978ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:46:14, skipping insertion in model container [2018-12-03 02:46:14,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:46:14" (3/3) ... [2018-12-03 02:46:14,591 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-03 02:46:14,596 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 02:46:14,601 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 02:46:14,609 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 02:46:14,625 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 02:46:14,625 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 02:46:14,625 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 02:46:14,625 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 02:46:14,625 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 02:46:14,626 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 02:46:14,626 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 02:46:14,626 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 02:46:14,626 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 02:46:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-12-03 02:46:14,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-03 02:46:14,638 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:46:14,639 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-03 02:46:14,640 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:46:14,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:46:14,643 INFO L82 PathProgramCache]: Analyzing trace with hash -800595804, now seen corresponding path program 1 times [2018-12-03 02:46:14,646 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 02:46:14,646 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 02:46:14,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:46:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:46:14,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 02:46:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-03 02:46:14,747 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 02:46:14,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:46:14,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 02:46:14,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 02:46:14,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 02:46:14,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 02:46:14,766 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-12-03 02:46:14,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:46:14,781 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2018-12-03 02:46:14,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 02:46:14,782 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-12-03 02:46:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:46:14,787 INFO L225 Difference]: With dead ends: 93 [2018-12-03 02:46:14,787 INFO L226 Difference]: Without dead ends: 39 [2018-12-03 02:46:14,790 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 02:46:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-03 02:46:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-03 02:46:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-03 02:46:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-03 02:46:14,815 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2018-12-03 02:46:14,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:46:14,816 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-03 02:46:14,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 02:46:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-03 02:46:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-03 02:46:14,818 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:46:14,818 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-03 02:46:14,818 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:46:14,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:46:14,818 INFO L82 PathProgramCache]: Analyzing trace with hash 746795704, now seen corresponding path program 1 times [2018-12-03 02:46:14,819 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 02:46:14,819 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 02:46:14,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:46:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:46:14,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 02:46:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 02:46:14,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 02:46:14,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:46:14,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 02:46:14,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 02:46:14,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 02:46:14,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 02:46:14,933 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2018-12-03 02:46:14,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:46:14,990 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2018-12-03 02:46:14,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 02:46:14,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-12-03 02:46:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:46:14,991 INFO L225 Difference]: With dead ends: 68 [2018-12-03 02:46:14,991 INFO L226 Difference]: Without dead ends: 44 [2018-12-03 02:46:14,992 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-03 02:46:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-03 02:46:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-03 02:46:14,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-03 02:46:14,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-12-03 02:46:14,997 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2018-12-03 02:46:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:46:14,997 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-12-03 02:46:14,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 02:46:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-12-03 02:46:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-03 02:46:14,998 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:46:14,998 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:46:14,998 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:46:14,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:46:14,999 INFO L82 PathProgramCache]: Analyzing trace with hash -573414004, now seen corresponding path program 1 times [2018-12-03 02:46:14,999 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 02:46:14,999 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 02:46:15,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:46:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:46:15,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 02:46:15,235 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-03 02:46:15,239 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-03 02:46:15,239 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:15,242 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:15,248 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:15,248 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-12-03 02:46:17,413 WARN L180 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 65 [2018-12-03 02:46:17,415 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:17,547 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:20,069 INFO L303 Elim1Store]: Index analysis took 154 ms [2018-12-03 02:46:20,069 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-03 02:46:20,471 INFO L303 Elim1Store]: Index analysis took 401 ms [2018-12-03 02:46:20,472 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2018-12-03 02:46:20,472 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:20,551 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:22,516 INFO L303 Elim1Store]: Index analysis took 220 ms [2018-12-03 02:46:22,516 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2018-12-03 02:46:22,540 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-12-03 02:46:22,561 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-12-03 02:46:22,561 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:22,664 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:22,975 INFO L303 Elim1Store]: Index analysis took 143 ms [2018-12-03 02:46:22,975 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2018-12-03 02:46:22,988 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-03 02:46:22,988 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:23,088 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:23,395 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:23,430 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2018-12-03 02:46:23,439 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2018-12-03 02:46:23,463 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2018-12-03 02:46:23,463 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:23,530 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:23,848 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2018-12-03 02:46:23,876 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-03 02:46:23,877 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:23,932 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:24,355 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:24,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2018-12-03 02:46:25,018 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-12-03 02:46:25,018 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:25,206 INFO L303 Elim1Store]: Index analysis took 106 ms [2018-12-03 02:46:25,227 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 40 [2018-12-03 02:46:25,233 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2018-12-03 02:46:25,233 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:25,453 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 26 [2018-12-03 02:46:25,454 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 4 xjuncts. [2018-12-03 02:46:25,645 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 02:46:25,809 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-03 02:46:26,084 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2018-12-03 02:46:26,088 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-12-03 02:46:26,091 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-12-03 02:46:26,092 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,101 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,130 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2018-12-03 02:46:26,134 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-03 02:46:26,134 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,146 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,159 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,168 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2018-12-03 02:46:26,172 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2018-12-03 02:46:26,176 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2018-12-03 02:46:26,177 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,194 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,224 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2018-12-03 02:46:26,234 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-03 02:46:26,235 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,247 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,262 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,329 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 5 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-03 02:46:26,329 INFO L202 ElimStorePlain]: Needed 30 recursive calls to eliminate 6 variables, input treesize:119, output treesize:171 [2018-12-03 02:46:26,544 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2018-12-03 02:46:26,549 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2018-12-03 02:46:26,549 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,563 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 3 [2018-12-03 02:46:26,563 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,569 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,594 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2018-12-03 02:46:26,597 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2018-12-03 02:46:26,597 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,618 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2018-12-03 02:46:26,619 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,635 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2018-12-03 02:46:26,635 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,640 INFO L267 ElimStorePlain]: Start of recursive call 5: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,645 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,645 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 3 variables, input treesize:90, output treesize:16 [2018-12-03 02:46:26,673 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-03 02:46:26,675 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-03 02:46:26,675 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,677 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,680 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:26,680 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:9 [2018-12-03 02:46:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-03 02:46:26,711 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 02:46:26,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:46:26,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-03 02:46:26,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-03 02:46:26,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-03 02:46:26,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-12-03 02:46:26,713 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 12 states. [2018-12-03 02:46:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:46:31,047 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-12-03 02:46:31,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-03 02:46:31,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2018-12-03 02:46:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:46:31,048 INFO L225 Difference]: With dead ends: 54 [2018-12-03 02:46:31,049 INFO L226 Difference]: Without dead ends: 52 [2018-12-03 02:46:31,049 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2018-12-03 02:46:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-03 02:46:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2018-12-03 02:46:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-03 02:46:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-12-03 02:46:31,053 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 46 [2018-12-03 02:46:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:46:31,053 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-12-03 02:46:31,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-03 02:46:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-12-03 02:46:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-03 02:46:31,054 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:46:31,054 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:46:31,054 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:46:31,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:46:31,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1201593358, now seen corresponding path program 1 times [2018-12-03 02:46:31,054 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 02:46:31,054 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3171dfab-a35b-4e28-abd7-7e580284e496/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 02:46:31,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:46:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:46:31,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 02:46:31,559 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-03 02:46:31,560 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,564 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,564 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-03 02:46:31,666 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-03 02:46:31,668 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-03 02:46:31,668 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,670 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,678 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,678 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-12-03 02:46:31,759 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-12-03 02:46:31,764 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:31,767 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2018-12-03 02:46:31,767 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,774 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,800 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-03 02:46:31,804 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-03 02:46:31,805 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,808 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,827 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,827 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:62, output treesize:43 [2018-12-03 02:46:31,881 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:31,895 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 22 [2018-12-03 02:46:31,899 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-03 02:46:31,899 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,912 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,948 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:31,959 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2018-12-03 02:46:31,963 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2018-12-03 02:46:31,963 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,971 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:31,992 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:31,993 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:72, output treesize:55 [2018-12-03 02:46:32,643 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:32,661 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:32,843 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:32,880 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 67 [2018-12-03 02:46:32,894 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-03 02:46:32,894 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:32,958 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:33,009 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 64 [2018-12-03 02:46:33,018 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:33,025 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 49 [2018-12-03 02:46:33,025 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,048 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,063 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,119 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:33,138 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 104 [2018-12-03 02:46:33,148 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 32 [2018-12-03 02:46:33,148 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,188 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:33,202 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2018-12-03 02:46:33,208 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:33,208 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 97 [2018-12-03 02:46:33,209 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,239 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,268 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,302 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:33,302 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 5 variables, input treesize:163, output treesize:82 [2018-12-03 02:46:33,515 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:33,517 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:33,519 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:46:33,519 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 52 [2018-12-03 02:46:33,524 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2018-12-03 02:46:33,524 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,540 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:46:33,583 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:33,584 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:86, output treesize:85 [2018-12-03 02:46:34,032 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:34,112 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:34,327 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:34,358 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:34,515 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:34,515 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:110, output treesize:84 [2018-12-03 02:46:36,980 WARN L180 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 45 [2018-12-03 02:46:39,678 WARN L180 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-03 02:46:42,684 WARN L180 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-03 02:46:42,689 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:46,289 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:55,713 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:46:57,069 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:47:06,017 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:47:07,888 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:47:18,716 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:47:21,006 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:47:30,620 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:47:38,014 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 02:47:50,466 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-2 vars, End of recursive call: 10 dim-0 vars, and 1 xjuncts. [2018-12-03 02:47:50,466 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:3009, output treesize:10942 [2018-12-03 02:48:25,260 WARN L180 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-12-03 02:52:34,617 WARN L180 SmtUtils]: Spent 4.16 m on a formula simplification. DAG size of input: 754 DAG size of output: 133 [2018-12-03 02:52:36,915 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:52:37,890 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:52:38,619 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:52:40,053 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:52:40,054 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:52:40,055 INFO L303 Elim1Store]: Index analysis took 5436 ms [2018-12-03 02:52:40,056 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 61 [2018-12-03 02:52:40,056 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 02:53:18,471 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:53:19,604 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:53:28,353 WARN L687 Elim1Store]: solver failed to check if following not equals relation is implied: (= (select |v_#memory_int_BEFORE_CALL_4| (select (let ((.cse0 (store |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| dll_circular_append_~new_last~0.base (store (store (store (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| dll_circular_append_~new_last~0.base) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) v_DerPreprocessor_18)))) (select .cse0 (select (select .cse0 |main_~#s~0.base|) |main_~#s~0.offset|))) (bvadd (select (select (store |v_#memory_$Pointer$.offset_BEFORE_CALL_4| dll_circular_append_~new_last~0.base (store (store (store (select |v_#memory_$Pointer$.offset_BEFORE_CALL_4| dll_circular_append_~new_last~0.base) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) v_DerPreprocessor_10)) |main_~#s~0.base|) |main_~#s~0.offset|) (_ bv4 32)))) (select |v_#memory_int_BEFORE_CALL_4| dll_circular_append_~new_last~0.base)) [2018-12-03 02:53:33,030 INFO L303 Elim1Store]: Index analysis took 16964 ms [2018-12-03 02:53:33,031 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2900 treesize of output 2990 [2018-12-03 02:53:39,674 WARN L180 SmtUtils]: Spent 6.64 s on a formula simplification that was a NOOP. DAG size: 109 [2018-12-03 02:53:40,280 INFO L303 Elim1Store]: Index analysis took 605 ms [2018-12-03 02:53:40,281 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-12-03 02:53:43,535 INFO L303 Elim1Store]: Index analysis took 3253 ms [2018-12-03 02:53:43,535 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2018-12-03 02:53:46,572 WARN L670 Elim1Store]: solver failed to check if following equality is implied: (= (select v_arrayElimArr_15 (_ bv4 32)) (select v_arrayElimArr_15 (_ bv0 32))) [2018-12-03 02:53:48,582 WARN L687 Elim1Store]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimArr_15 (_ bv4 32)) (select v_arrayElimArr_15 (_ bv0 32))) [2018-12-03 02:53:50,589 WARN L670 Elim1Store]: solver failed to check if following equality is implied: (= node_create_~data (select v_arrayElimArr_15 (_ bv4 32))) [2018-12-03 02:53:52,596 WARN L687 Elim1Store]: solver failed to check if following not equals relation is implied: (= node_create_~data (select v_arrayElimArr_15 (_ bv4 32))) [2018-12-03 02:53:54,228 INFO L303 Elim1Store]: Index analysis took 10691 ms [2018-12-03 02:53:54,229 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 19 treesize of output 22 [2018-12-03 02:53:54,229 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-03 02:54:07,905 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:54:16,369 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:54:36,374 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:54:36,623 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:54:37,202 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:54:37,203 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:54:45,168 INFO L303 Elim1Store]: Index analysis took 11091 ms [2018-12-03 02:54:45,169 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2681 treesize of output 2848 [2018-12-03 02:54:51,744 WARN L180 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-12-03 02:54:52,279 INFO L303 Elim1Store]: Index analysis took 534 ms [2018-12-03 02:54:52,279 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2018-12-03 02:54:52,279 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-03 02:55:06,277 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:55:07,231 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:55:07,847 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:55:17,755 INFO L303 Elim1Store]: Index analysis took 12029 ms [2018-12-03 02:55:17,756 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2549 treesize of output 3692 [2018-12-03 02:55:23,125 INFO L303 Elim1Store]: Index analysis took 5367 ms [2018-12-03 02:55:23,125 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-12-03 02:55:30,263 INFO L303 Elim1Store]: Index analysis took 7136 ms [2018-12-03 02:55:30,263 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2018-12-03 02:55:30,264 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-03 02:55:33,371 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:55:39,193 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:55:39,636 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:55:40,178 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:55:45,002 INFO L303 Elim1Store]: Index analysis took 7009 ms [2018-12-03 02:55:45,003 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3041 treesize of output 3160 [2018-12-03 02:55:45,489 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:55:46,283 INFO L303 Elim1Store]: Index analysis took 1278 ms [2018-12-03 02:55:46,284 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 1938 treesize of output 972 [2018-12-03 02:55:46,284 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-03 02:55:49,764 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:55:51,976 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:55:54,342 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:55:56,638 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:56:05,476 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:05,932 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:05,933 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:56:06,104 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:06,105 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:56:07,994 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:15,587 INFO L303 Elim1Store]: Index analysis took 10630 ms [2018-12-03 02:56:15,588 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 5522 treesize of output 2197 [2018-12-03 02:56:40,286 WARN L180 SmtUtils]: Spent 24.70 s on a formula simplification. DAG size of input: 135 DAG size of output: 97 [2018-12-03 02:56:40,388 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-12-03 02:56:40,616 INFO L303 Elim1Store]: Index analysis took 227 ms [2018-12-03 02:56:40,616 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2018-12-03 02:56:41,051 INFO L303 Elim1Store]: Index analysis took 434 ms [2018-12-03 02:56:41,052 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 19 treesize of output 22 [2018-12-03 02:56:41,052 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-03 02:56:42,184 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:56:43,341 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 02:56:48,006 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:48,107 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:48,239 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:48,240 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:56:48,394 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:50,301 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:56:50,988 INFO L303 Elim1Store]: Index analysis took 3231 ms [2018-12-03 02:56:50,989 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 2139 treesize of output 1588 [2018-12-03 02:57:05,800 WARN L180 SmtUtils]: Spent 14.81 s on a formula simplification. DAG size of input: 168 DAG size of output: 101 [2018-12-03 02:57:06,047 INFO L303 Elim1Store]: Index analysis took 246 ms [2018-12-03 02:57:06,098 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 43 [2018-12-03 02:57:06,099 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-12-03 02:57:09,411 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:09,481 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:09,482 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:57:09,643 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:10,028 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:10,728 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:10,805 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:11,658 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:11,775 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:13,779 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:57:13,780 INFO L303 Elim1Store]: Index analysis took 4483 ms [2018-12-03 02:57:13,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1401 treesize of output 1416 [2018-12-03 02:57:14,114 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:14,146 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:14,792 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:57:14,795 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:57:15,445 INFO L303 Elim1Store]: Index analysis took 1660 ms [2018-12-03 02:57:15,498 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 271 treesize of output 183 [2018-12-03 02:57:15,500 INFO L267 ElimStorePlain]: Start of recursive call 21: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2018-12-03 02:57:18,853 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:18,889 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:19,119 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:19,308 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:19,622 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 02:57:19,623 INFO L303 Elim1Store]: Index analysis took 844 ms [2018-12-03 02:57:19,624 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1408 treesize of output 1186 [2018-12-03 02:57:19,721 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-12-03 02:57:19,721 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-03 02:57:21,377 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:57:21,377 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:57:21,378 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 02:57:21,380 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1034 treesize of output 1040 [2018-12-03 02:57:21,633 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 02:57:21,634 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_arrayElimArr_26 input size 33 context size 33 output size 33 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.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:456) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2018-12-03 02:57:21,638 INFO L168 Benchmark]: Toolchain (without parser) took 667907.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 938.0 MB in the beginning and 866.0 MB in the end (delta: 72.0 MB). Peak memory consumption was 336.9 MB. Max. memory is 11.5 GB. [2018-12-03 02:57:21,639 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:57:21,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-03 02:57:21,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.01 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-03 02:57:21,640 INFO L168 Benchmark]: Boogie Preprocessor took 27.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:57:21,641 INFO L168 Benchmark]: RCFGBuilder took 483.41 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-12-03 02:57:21,641 INFO L168 Benchmark]: TraceAbstraction took 667049.75 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.8 MB). Free memory was 1.1 GB in the beginning and 866.0 MB in the end (delta: 195.5 MB). Peak memory consumption was 336.7 MB. Max. memory is 11.5 GB. [2018-12-03 02:57:21,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 321.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.01 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 483.41 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 667049.75 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.8 MB). Free memory was 1.1 GB in the beginning and 866.0 MB in the end (delta: 195.5 MB). Peak memory consumption was 336.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_26 input size 33 context size 33 output size 33 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_26 input size 33 context size 33 output size 33: 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...