./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bebd3708d0e1127b0953933828504d3490382862 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bebd3708d0e1127b0953933828504d3490382862 .................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:17:11,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:17:11,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:17:11,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:17:11,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:17:11,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:17:11,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:17:11,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:17:11,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:17:11,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:17:11,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:17:11,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:17:11,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:17:11,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:17:11,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:17:11,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:17:11,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:17:11,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:17:11,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:17:11,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:17:11,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:17:11,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:17:11,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:17:11,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:17:11,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:17:11,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:17:11,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:17:11,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:17:11,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:17:11,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:17:11,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:17:11,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:17:11,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:17:11,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:17:11,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:17:11,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:17:11,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:17:11,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:17:11,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:17:11,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:17:11,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:17:11,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:17:11,557 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:17:11,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:17:11,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:17:11,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:17:11,559 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:17:11,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:17:11,560 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:17:11,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:17:11,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:17:11,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:17:11,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:17:11,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:17:11,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:17:11,562 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:17:11,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:17:11,562 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:17:11,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:17:11,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:17:11,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:17:11,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:17:11,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:17:11,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:17:11,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:17:11,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:17:11,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:17:11,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:17:11,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:17:11,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:17:11,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bebd3708d0e1127b0953933828504d3490382862 [2019-11-16 00:17:11,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:17:11,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:17:11,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:17:11,646 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:17:11,646 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:17:11,648 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2019-11-16 00:17:11,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data/06ae62566/d1d3e3965cc947ef97c2cc44cc829fc1/FLAGf97cd669b [2019-11-16 00:17:12,387 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:17:12,388 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2019-11-16 00:17:12,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data/06ae62566/d1d3e3965cc947ef97c2cc44cc829fc1/FLAGf97cd669b [2019-11-16 00:17:12,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data/06ae62566/d1d3e3965cc947ef97c2cc44cc829fc1 [2019-11-16 00:17:12,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:17:12,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:17:12,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:17:12,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:17:12,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:17:12,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:12" (1/1) ... [2019-11-16 00:17:12,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ed9bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:12, skipping insertion in model container [2019-11-16 00:17:12,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:12" (1/1) ... [2019-11-16 00:17:12,676 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:17:12,722 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:17:13,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:17:13,165 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:17:13,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:17:13,310 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:17:13,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13 WrapperNode [2019-11-16 00:17:13,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:17:13,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:17:13,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:17:13,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:17:13,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:17:13,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:17:13,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:17:13,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:17:13,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... [2019-11-16 00:17:13,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:17:13,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:17:13,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:17:13,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:17:13,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-16 00:17:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-16 00:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-16 00:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-16 00:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:17:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:17:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:17:13,883 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:17:13,884 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-16 00:17:13,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:13 BoogieIcfgContainer [2019-11-16 00:17:13,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:17:13,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:17:13,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:17:13,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:17:13,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:17:12" (1/3) ... [2019-11-16 00:17:13,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e400853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:13, skipping insertion in model container [2019-11-16 00:17:13,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:13" (2/3) ... [2019-11-16 00:17:13,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e400853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:13, skipping insertion in model container [2019-11-16 00:17:13,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:13" (3/3) ... [2019-11-16 00:17:13,894 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2019-11-16 00:17:13,904 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:17:13,912 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:17:13,921 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:17:13,948 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:17:13,948 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:17:13,948 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:17:13,948 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:17:13,948 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:17:13,949 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:17:13,949 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:17:13,949 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:17:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-16 00:17:13,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:17:13,969 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:13,970 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:13,972 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:13,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:13,977 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-16 00:17:13,985 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:17:13,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765799097] [2019-11-16 00:17:13,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:13,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:13,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:17:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:14,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765799097] [2019-11-16 00:17:14,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:17:14,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:17:14,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571717504] [2019-11-16 00:17:14,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:17:14,183 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:17:14,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:17:14,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:17:14,199 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-11-16 00:17:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:17:14,245 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2019-11-16 00:17:14,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:17:14,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-16 00:17:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:17:14,259 INFO L225 Difference]: With dead ends: 43 [2019-11-16 00:17:14,259 INFO L226 Difference]: Without dead ends: 21 [2019-11-16 00:17:14,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:17:14,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-16 00:17:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-16 00:17:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-16 00:17:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-16 00:17:14,302 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2019-11-16 00:17:14,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:17:14,302 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-16 00:17:14,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:17:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-16 00:17:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-16 00:17:14,304 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:14,304 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:14,304 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:14,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:14,305 INFO L82 PathProgramCache]: Analyzing trace with hash -60440637, now seen corresponding path program 1 times [2019-11-16 00:17:14,305 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:17:14,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186818287] [2019-11-16 00:17:14,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:14,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:14,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:17:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:14,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186818287] [2019-11-16 00:17:14,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579586340] [2019-11-16 00:17:14,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:14,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-16 00:17:14,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:17:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:14,539 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:17:14,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-16 00:17:14,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202084004] [2019-11-16 00:17:14,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:17:14,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:17:14,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:17:14,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:17:14,543 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-16 00:17:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:17:14,608 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-11-16 00:17:14,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:17:14,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-16 00:17:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:17:14,611 INFO L225 Difference]: With dead ends: 35 [2019-11-16 00:17:14,611 INFO L226 Difference]: Without dead ends: 24 [2019-11-16 00:17:14,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:17:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-16 00:17:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-16 00:17:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-16 00:17:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-16 00:17:14,618 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2019-11-16 00:17:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:17:14,618 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-16 00:17:14,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:17:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-16 00:17:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:17:14,619 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:14,619 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:14,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:14,828 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:14,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:14,833 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 2 times [2019-11-16 00:17:14,834 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:17:14,834 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275680468] [2019-11-16 00:17:14,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:14,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:14,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:17:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:14,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275680468] [2019-11-16 00:17:14,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207156900] [2019-11-16 00:17:14,994 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:15,112 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:17:15,113 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:17:15,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:17:15,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:17:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:15,141 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:17:15,142 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-16 00:17:15,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531311426] [2019-11-16 00:17:15,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:17:15,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:17:15,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:17:15,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:17:15,144 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-16 00:17:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:17:15,186 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-16 00:17:15,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:17:15,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-16 00:17:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:17:15,188 INFO L225 Difference]: With dead ends: 38 [2019-11-16 00:17:15,188 INFO L226 Difference]: Without dead ends: 27 [2019-11-16 00:17:15,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:17:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-16 00:17:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-16 00:17:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-16 00:17:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-16 00:17:15,194 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-11-16 00:17:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:17:15,195 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-16 00:17:15,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:17:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-16 00:17:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-16 00:17:15,196 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:15,196 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:15,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:15,409 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:15,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1626262435, now seen corresponding path program 3 times [2019-11-16 00:17:15,410 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:17:15,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122146700] [2019-11-16 00:17:15,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:15,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:15,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:17:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:15,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122146700] [2019-11-16 00:17:15,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045119321] [2019-11-16 00:17:15,545 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:16,303 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-16 00:17:16,303 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:17:16,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:17:16,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:17:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:16,329 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:17:16,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-16 00:17:16,331 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659334332] [2019-11-16 00:17:16,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:17:16,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:17:16,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:17:16,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:17:16,334 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2019-11-16 00:17:16,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:17:16,391 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-11-16 00:17:16,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:17:16,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-16 00:17:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:17:16,395 INFO L225 Difference]: With dead ends: 39 [2019-11-16 00:17:16,395 INFO L226 Difference]: Without dead ends: 28 [2019-11-16 00:17:16,395 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:17:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-16 00:17:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-16 00:17:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-16 00:17:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-16 00:17:16,400 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2019-11-16 00:17:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:17:16,400 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-16 00:17:16,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:17:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-16 00:17:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:17:16,401 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:16,402 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:16,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:16,606 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:16,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2045871112, now seen corresponding path program 4 times [2019-11-16 00:17:16,607 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:17:16,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271457640] [2019-11-16 00:17:16,607 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:16,607 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:16,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:17:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:17:17,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271457640] [2019-11-16 00:17:17,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531227258] [2019-11-16 00:17:17,100 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:18,040 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:17:18,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:17:18,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-16 00:17:18,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:17:18,127 INFO L375 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 [2019-11-16 00:17:18,128 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,147 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:18,148 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,148 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-16 00:17:18,238 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:18,239 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-16 00:17:18,239 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,253 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:18,253 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,254 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:17 [2019-11-16 00:17:18,317 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2019-11-16 00:17:18,318 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,330 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:18,331 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,331 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:17 [2019-11-16 00:17:18,376 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:18,392 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:18,401 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 18 [2019-11-16 00:17:18,402 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,422 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:18,423 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,423 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:14 [2019-11-16 00:17:18,511 INFO L375 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 7 [2019-11-16 00:17:18,512 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,522 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:18,523 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:18,523 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-16 00:17:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:17:18,560 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:17:18,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-16 00:17:18,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109105756] [2019-11-16 00:17:18,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-16 00:17:18,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:17:18,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-16 00:17:18,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:17:18,562 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 18 states. [2019-11-16 00:17:19,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:17:19,147 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2019-11-16 00:17:19,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-16 00:17:19,148 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2019-11-16 00:17:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:17:19,148 INFO L225 Difference]: With dead ends: 36 [2019-11-16 00:17:19,149 INFO L226 Difference]: Without dead ends: 34 [2019-11-16 00:17:19,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2019-11-16 00:17:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-16 00:17:19,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-11-16 00:17:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-16 00:17:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-16 00:17:19,157 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2019-11-16 00:17:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:17:19,157 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-16 00:17:19,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-16 00:17:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-16 00:17:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-16 00:17:19,158 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:19,159 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:19,361 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:19,362 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:19,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-11-16 00:17:19,362 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:17:19,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929686676] [2019-11-16 00:17:19,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:19,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:17:19,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:17:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:20,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929686676] [2019-11-16 00:17:20,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433754677] [2019-11-16 00:17:20,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:20,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 74 conjunts are in the unsatisfiable core [2019-11-16 00:17:20,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:17:20,364 INFO L375 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 [2019-11-16 00:17:20,364 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,375 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:20,375 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,376 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-16 00:17:20,484 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:20,484 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-16 00:17:20,485 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,521 INFO L567 ElimStorePlain]: treesize reduction 14, result has 65.9 percent of original size [2019-11-16 00:17:20,521 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,521 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27 [2019-11-16 00:17:20,574 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2019-11-16 00:17:20,575 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,589 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:20,590 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:20,591 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:62, output treesize:34 [2019-11-16 00:17:20,658 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:20,659 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2019-11-16 00:17:20,659 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,692 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:20,693 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,693 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:27 [2019-11-16 00:17:20,807 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2019-11-16 00:17:20,807 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,884 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:20,892 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-11-16 00:17:20,893 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:20,950 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:20,954 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:20,988 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:20,997 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2019-11-16 00:17:20,998 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:21,028 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:21,037 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2019-11-16 00:17:21,037 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:21,068 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:21,078 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-11-16 00:17:21,079 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:21,108 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:21,108 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 6 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:21,109 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:125, output treesize:65 [2019-11-16 00:17:21,162 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_27|], 1=[|v_#memory_int_29|], 2=[|v_#memory_$Pointer$.base_20|, |v_#memory_$Pointer$.offset_20|]} [2019-11-16 00:17:21,166 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:21,238 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:21,250 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 32 [2019-11-16 00:17:21,251 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:21,314 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:21,355 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:21,356 INFO L375 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 3 case distinctions, treesize of input 69 treesize of output 85 [2019-11-16 00:17:21,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,367 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:21,482 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-11-16 00:17:21,482 INFO L567 ElimStorePlain]: treesize reduction 28, result has 78.9 percent of original size [2019-11-16 00:17:21,498 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:21,498 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 51 [2019-11-16 00:17:21,499 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:21,563 INFO L567 ElimStorePlain]: treesize reduction 16, result has 85.2 percent of original size [2019-11-16 00:17:21,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,564 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:21,565 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:146, output treesize:90 [2019-11-16 00:17:21,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,830 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2019-11-16 00:17:21,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:21,854 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|, v_prenex_4, v_prenex_5], 5=[v_prenex_1, |v_#memory_int_30|], 7=[|v_#memory_$Pointer$.offset_21|, |v_#memory_$Pointer$.base_21|], 10=[v_prenex_2, v_prenex_6]} [2019-11-16 00:17:21,860 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:22,023 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-11-16 00:17:22,023 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,030 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:22,136 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-11-16 00:17:22,137 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,143 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:22,227 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,231 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:22,305 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,319 INFO L375 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 126 treesize of output 121 [2019-11-16 00:17:22,320 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:22,425 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-11-16 00:17:22,426 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,436 INFO L375 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 110 treesize of output 105 [2019-11-16 00:17:22,437 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:22,510 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,521 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 87 [2019-11-16 00:17:22,527 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,529 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:17:22,533 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,539 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:17:22,540 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2019-11-16 00:17:22,541 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:22,563 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,563 INFO L496 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:22,617 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,640 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,641 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 74 [2019-11-16 00:17:22,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:22,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:22,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:22,657 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,658 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,659 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:17:22,660 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_28], 1=[v_prenex_7, v_arrayElimCell_27]} [2019-11-16 00:17:22,667 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2019-11-16 00:17:22,668 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:22,738 INFO L567 ElimStorePlain]: treesize reduction 6, result has 92.2 percent of original size [2019-11-16 00:17:22,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,747 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,747 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:17:22,748 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2019-11-16 00:17:22,749 INFO L496 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:22,775 INFO L567 ElimStorePlain]: treesize reduction 22, result has 58.5 percent of original size [2019-11-16 00:17:22,775 INFO L464 ElimStorePlain]: Eliminatee v_arrayElimCell_27 vanished before elimination [2019-11-16 00:17:22,775 INFO L496 ElimStorePlain]: Start of recursive call 10: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:22,849 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,867 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:22,867 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 127 [2019-11-16 00:17:22,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:22,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:22,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:22,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:22,874 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:22,876 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:17:22,877 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_33, v_arrayElimCell_35], 1=[v_arrayElimCell_34]} [2019-11-16 00:17:23,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:17:23,081 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) 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:292) 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.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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) [2019-11-16 00:17:23,085 INFO L168 Benchmark]: Toolchain (without parser) took 10427.88 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 307.2 MB). Free memory was 946.1 MB in the beginning and 1.3 GB in the end (delta: -350.5 MB). Peak memory consumption was 371.0 MB. Max. memory is 11.5 GB. [2019-11-16 00:17:23,085 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:17:23,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -146.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:17:23,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.08 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. [2019-11-16 00:17:23,087 INFO L168 Benchmark]: Boogie Preprocessor took 36.06 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. [2019-11-16 00:17:23,087 INFO L168 Benchmark]: RCFGBuilder took 486.01 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: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:17:23,088 INFO L168 Benchmark]: TraceAbstraction took 9196.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 184.0 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -232.9 MB). Peak memory consumption was 365.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:17:23,091 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 652.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -146.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.08 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 36.06 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 486.01 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: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9196.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 184.0 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -232.9 MB). Peak memory consumption was 365.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-16 00:17:25,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:17:25,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:17:25,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:17:25,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:17:25,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:17:25,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:17:25,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:17:25,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:17:25,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:17:25,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:17:25,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:17:25,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:17:25,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:17:25,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:17:25,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:17:25,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:17:25,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:17:25,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:17:25,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:17:25,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:17:25,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:17:25,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:17:25,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:17:25,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:17:25,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:17:25,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:17:25,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:17:25,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:17:25,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:17:25,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:17:25,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:17:25,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:17:25,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:17:25,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:17:25,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:17:25,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:17:25,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:17:25,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:17:25,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:17:25,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:17:25,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-16 00:17:25,651 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:17:25,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:17:25,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:17:25,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:17:25,653 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:17:25,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:17:25,654 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:17:25,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:17:25,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:17:25,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:17:25,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:17:25,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:17:25,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-16 00:17:25,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-16 00:17:25,670 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:17:25,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:17:25,671 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:17:25,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:17:25,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:17:25,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:17:25,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:17:25,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:17:25,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:17:25,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:17:25,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:17:25,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:17:25,674 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-16 00:17:25,674 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-16 00:17:25,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:17:25,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-16 00:17:25,675 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bebd3708d0e1127b0953933828504d3490382862 [2019-11-16 00:17:25,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:17:25,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:17:25,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:17:25,730 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:17:25,730 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:17:25,731 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2019-11-16 00:17:25,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data/ce1391242/ef42ba8c49f8471fbd1c606bd28b6f19/FLAG22c8a7f33 [2019-11-16 00:17:26,276 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:17:26,277 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2019-11-16 00:17:26,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data/ce1391242/ef42ba8c49f8471fbd1c606bd28b6f19/FLAG22c8a7f33 [2019-11-16 00:17:26,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/data/ce1391242/ef42ba8c49f8471fbd1c606bd28b6f19 [2019-11-16 00:17:26,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:17:26,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:17:26,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:17:26,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:17:26,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:17:26,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:26" (1/1) ... [2019-11-16 00:17:26,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cde815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:26, skipping insertion in model container [2019-11-16 00:17:26,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:26" (1/1) ... [2019-11-16 00:17:26,672 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:17:26,728 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:17:27,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:17:27,108 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:17:27,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:17:27,251 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:17:27,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27 WrapperNode [2019-11-16 00:17:27,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:17:27,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:17:27,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:17:27,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:17:27,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:17:27,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:17:27,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:17:27,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:17:27,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... [2019-11-16 00:17:27,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:17:27,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:17:27,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:17:27,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:17:27,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:17:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-16 00:17:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-16 00:17:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-16 00:17:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-16 00:17:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:17:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-16 00:17:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:17:27,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:17:27,929 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:17:27,929 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-16 00:17:27,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:27 BoogieIcfgContainer [2019-11-16 00:17:27,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:17:27,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:17:27,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:17:27,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:17:27,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:17:26" (1/3) ... [2019-11-16 00:17:27,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212ea54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:27, skipping insertion in model container [2019-11-16 00:17:27,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:27" (2/3) ... [2019-11-16 00:17:27,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212ea54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:27, skipping insertion in model container [2019-11-16 00:17:27,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:27" (3/3) ... [2019-11-16 00:17:27,937 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2019-11-16 00:17:27,944 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:17:27,951 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:17:27,959 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:17:27,977 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:17:27,978 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:17:27,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:17:27,978 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:17:27,981 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:17:27,982 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:17:27,982 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:17:27,982 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:17:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-16 00:17:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:17:28,012 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:28,013 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:28,014 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:28,024 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-16 00:17:28,035 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:17:28,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2089254852] [2019-11-16 00:17:28,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/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 [2019-11-16 00:17:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:28,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:17:28,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:17:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:28,234 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:17:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:28,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2089254852] [2019-11-16 00:17:28,257 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:17:28,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-16 00:17:28,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514264568] [2019-11-16 00:17:28,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:17:28,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:17:28,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:17:28,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:17:28,274 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-11-16 00:17:28,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:17:28,446 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-16 00:17:28,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:17:28,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-16 00:17:28,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:17:28,459 INFO L225 Difference]: With dead ends: 44 [2019-11-16 00:17:28,459 INFO L226 Difference]: Without dead ends: 22 [2019-11-16 00:17:28,463 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:17:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-16 00:17:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-16 00:17:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-16 00:17:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-16 00:17:28,495 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2019-11-16 00:17:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:17:28,496 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-16 00:17:28,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:17:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-16 00:17:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:17:28,497 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:28,497 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:28,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:17:28,698 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:28,698 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 1 times [2019-11-16 00:17:28,699 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:17:28,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [646244503] [2019-11-16 00:17:28,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/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 [2019-11-16 00:17:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:17:28,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:17:28,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:17:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:28,907 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:17:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:17:29,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [646244503] [2019-11-16 00:17:29,019 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:17:29,020 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-16 00:17:29,020 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413332306] [2019-11-16 00:17:29,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:17:29,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:17:29,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:17:29,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:17:29,023 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2019-11-16 00:17:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:17:29,418 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-11-16 00:17:29,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:17:29,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-16 00:17:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:17:29,421 INFO L225 Difference]: With dead ends: 39 [2019-11-16 00:17:29,421 INFO L226 Difference]: Without dead ends: 28 [2019-11-16 00:17:29,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:17:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-16 00:17:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-16 00:17:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-16 00:17:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-16 00:17:29,428 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-11-16 00:17:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:17:29,428 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-16 00:17:29,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:17:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-16 00:17:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:17:29,430 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:17:29,430 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:17:29,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:17:29,632 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:17:29,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:17:29,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2045871112, now seen corresponding path program 2 times [2019-11-16 00:17:29,634 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:17:29,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [338796976] [2019-11-16 00:17:29,634 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96bdf12d-33e4-45cd-bb14-7037d0dbfdc4/bin/uautomizer/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 [2019-11-16 00:17:30,143 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:17:30,143 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:17:30,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-16 00:17:30,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:17:30,231 INFO L375 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 [2019-11-16 00:17:30,232 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,251 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,251 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,252 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-16 00:17:30,334 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,334 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-16 00:17:30,336 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,363 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,363 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,364 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:17 [2019-11-16 00:17:30,423 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2019-11-16 00:17:30,424 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,442 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,443 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,443 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:17 [2019-11-16 00:17:30,504 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-16 00:17:30,505 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,534 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,546 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:30,547 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-16 00:17:30,548 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,562 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,563 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,563 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:14 [2019-11-16 00:17:30,646 INFO L375 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 7 [2019-11-16 00:17:30,648 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,656 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,656 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:30,656 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-16 00:17:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:17:30,690 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:17:30,819 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:30,842 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,847 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:30,856 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:30,857 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-16 00:17:30,858 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:22 [2019-11-16 00:17:30,976 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_28|], 2=[|v_#memory_int_32|]} [2019-11-16 00:17:31,049 INFO L341 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2019-11-16 00:17:31,049 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 20 [2019-11-16 00:17:31,050 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-16 00:17:31,113 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:39,261 WARN L191 SmtUtils]: Spent 8.14 s on a formula simplification that was a NOOP. DAG size: 27 [2019-11-16 00:17:39,261 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:39,261 INFO L375 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 2 case distinctions, treesize of input 43 treesize of output 76 [2019-11-16 00:17:39,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:39,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-16 00:17:39,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-16 00:17:39,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:39,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:39,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-16 00:17:39,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:39,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:39,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-16 00:17:39,301 INFO L375 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2019-11-16 00:17:39,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-16 00:17:39,311 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:17:39,314 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-16 00:17:39,322 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:17:39,330 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2019-11-16 00:17:39,331 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-16 00:17:39,349 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:39,349 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-16 00:17:53,682 WARN L191 SmtUtils]: Spent 14.33 s on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-11-16 00:17:53,682 INFO L567 ElimStorePlain]: treesize reduction 8, result has 89.3 percent of original size [2019-11-16 00:17:53,707 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-16 00:17:53,708 INFO L375 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 52 treesize of output 54 [2019-11-16 00:17:53,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:53,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:53,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:17:53,717 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-16 00:17:53,718 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_10], 1=[v_arrayElimCell_9]} [2019-11-16 00:17:53,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-16 00:17:53,924 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) 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:418) 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:335) 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.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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) [2019-11-16 00:17:53,928 INFO L168 Benchmark]: Toolchain (without parser) took 27278.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 941.6 MB in the beginning and 934.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 165.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:17:53,928 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:17:53,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:17:53,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.83 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. [2019-11-16 00:17:53,930 INFO L168 Benchmark]: Boogie Preprocessor took 36.70 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. [2019-11-16 00:17:53,930 INFO L168 Benchmark]: RCFGBuilder took 575.64 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:17:53,931 INFO L168 Benchmark]: TraceAbstraction took 25995.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.0 MB in the end (delta: 157.3 MB). Peak memory consumption was 157.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:17:53,937 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 601.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.83 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 36.70 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 575.64 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 25995.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.0 MB in the end (delta: 157.3 MB). Peak memory consumption was 157.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...