./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb0916d32e80eb99af2bf326ffd82fd2d4cfa9bc ........................................................................................................................................................................................................................................................................................................................................................................................... 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_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb0916d32e80eb99af2bf326ffd82fd2d4cfa9bc ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:23:17,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:23:17,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:23:17,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:23:17,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:23:17,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:23:17,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:23:17,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:23:17,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:23:17,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:23:17,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:23:17,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:23:17,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:23:17,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:23:17,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:23:17,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:23:17,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:23:17,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:23:17,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:23:17,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:23:17,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:23:17,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:23:17,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:23:17,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:23:17,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:23:17,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:23:17,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:23:17,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:23:17,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:23:17,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:23:17,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:23:17,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:23:17,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:23:17,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:23:17,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:23:17,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:23:17,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:23:17,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:23:17,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:23:17,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:23:17,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:23:17,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:23:17,571 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:23:17,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:23:17,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:23:17,582 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:23:17,583 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:23:17,583 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:23:17,583 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:23:17,583 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:23:17,584 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:23:17,584 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:23:17,584 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:23:17,584 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:23:17,584 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:23:17,585 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:23:17,585 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:23:17,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:23:17,586 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:23:17,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:23:17,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:23:17,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:23:17,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:23:17,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:23:17,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:23:17,587 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:23:17,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:23:17,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:23:17,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:23:17,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:23:17,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:23:17,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:23:17,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:23:17,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:23:17,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:23:17,589 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:23:17,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:23:17,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:23:17,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:23:17,590 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb0916d32e80eb99af2bf326ffd82fd2d4cfa9bc [2019-11-26 02:23:17,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:23:17,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:23:17,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:23:17,742 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:23:17,743 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:23:17,744 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn4.c [2019-11-26 02:23:17,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data/ced0b0c12/73dc8a4eae164b399020ffd1f9708056/FLAGa96dccdbd [2019-11-26 02:23:18,185 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:23:18,185 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/sv-benchmarks/c/array-fpi/ifeqn4.c [2019-11-26 02:23:18,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data/ced0b0c12/73dc8a4eae164b399020ffd1f9708056/FLAGa96dccdbd [2019-11-26 02:23:18,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data/ced0b0c12/73dc8a4eae164b399020ffd1f9708056 [2019-11-26 02:23:18,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:23:18,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:23:18,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:23:18,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:23:18,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:23:18,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291cccf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18, skipping insertion in model container [2019-11-26 02:23:18,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:23:18,250 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:23:18,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:23:18,463 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:23:18,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:23:18,552 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:23:18,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18 WrapperNode [2019-11-26 02:23:18,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:23:18,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:23:18,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:23:18,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:23:18,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:23:18,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:23:18,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:23:18,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:23:18,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... [2019-11-26 02:23:18,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:23:18,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:23:18,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:23:18,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:23:18,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:23:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:23:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:23:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:23:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:23:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:23:19,059 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:23:19,059 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:23:19,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:23:19 BoogieIcfgContainer [2019-11-26 02:23:19,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:23:19,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:23:19,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:23:19,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:23:19,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:23:18" (1/3) ... [2019-11-26 02:23:19,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77173623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:23:19, skipping insertion in model container [2019-11-26 02:23:19,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:18" (2/3) ... [2019-11-26 02:23:19,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77173623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:23:19, skipping insertion in model container [2019-11-26 02:23:19,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:23:19" (3/3) ... [2019-11-26 02:23:19,068 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn4.c [2019-11-26 02:23:19,076 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:23:19,082 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:23:19,091 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:23:19,111 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:23:19,111 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:23:19,112 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:23:19,112 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:23:19,112 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:23:19,112 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:23:19,112 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:23:19,113 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:23:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:23:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:23:19,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:19,127 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:19,127 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1907558339, now seen corresponding path program 1 times [2019-11-26 02:23:19,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:23:19,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647650061] [2019-11-26 02:23:19,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:23:19,221 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:23:19,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706292109] [2019-11-26 02:23:19,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/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 [2019-11-26 02:23:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:19,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:23:19,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:19,320 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:19,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647650061] [2019-11-26 02:23:19,336 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:23:19,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706292109] [2019-11-26 02:23:19,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:23:19,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:23:19,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944164394] [2019-11-26 02:23:19,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:23:19,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:23:19,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:23:19,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:23:19,352 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2019-11-26 02:23:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:23:19,454 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2019-11-26 02:23:19,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:23:19,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:23:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:23:19,462 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:23:19,463 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:23:19,465 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:23:19,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:23:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:23:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:23:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-26 02:23:19,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2019-11-26 02:23:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:23:19,492 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-26 02:23:19,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:23:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-26 02:23:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:23:19,493 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:19,493 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:19,709 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:23:19,710 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash 943394408, now seen corresponding path program 1 times [2019-11-26 02:23:19,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:23:19,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811775107] [2019-11-26 02:23:19,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:23:19,726 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:23:19,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911807366] [2019-11-26 02:23:19,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/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 [2019-11-26 02:23:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:19,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:23:19,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:19,815 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:19,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811775107] [2019-11-26 02:23:19,824 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:23:19,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911807366] [2019-11-26 02:23:19,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:23:19,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-11-26 02:23:19,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722087658] [2019-11-26 02:23:19,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:23:19,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:23:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:23:19,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:23:19,827 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2019-11-26 02:23:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:23:19,924 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-26 02:23:19,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:23:19,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-26 02:23:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:23:19,926 INFO L225 Difference]: With dead ends: 21 [2019-11-26 02:23:19,926 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:23:19,927 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:23:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:23:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2019-11-26 02:23:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:23:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-26 02:23:19,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2019-11-26 02:23:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:23:19,931 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-26 02:23:19,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:23:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-26 02:23:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:23:19,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:19,932 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:20,138 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:23:20,139 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:20,139 INFO L82 PathProgramCache]: Analyzing trace with hash -820589996, now seen corresponding path program 1 times [2019-11-26 02:23:20,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:23:20,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967611055] [2019-11-26 02:23:20,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:23:20,174 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:23:20,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586465998] [2019-11-26 02:23:20,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/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 [2019-11-26 02:23:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:20,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-26 02:23:20,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:20,301 INFO L377 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 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-26 02:23:20,302 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:23:20,308 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:23:20,308 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:23:20,308 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-26 02:23:20,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:20,353 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:20,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:20,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:20,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:20,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:20,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:20,520 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:23:20,521 INFO L377 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 61 treesize of output 63 [2019-11-26 02:23:20,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:20,528 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:20,529 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:20,529 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_1], 1=[v_arrayElimCell_2]} [2019-11-26 02:23:20,735 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:23:20,736 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.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.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.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java: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) [2019-11-26 02:23:20,740 INFO L168 Benchmark]: Toolchain (without parser) took 2528.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -68.9 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:23:20,740 INFO L168 Benchmark]: CDTParser took 0.29 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. [2019-11-26 02:23:20,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:23:20,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.21 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. [2019-11-26 02:23:20,742 INFO L168 Benchmark]: Boogie Preprocessor took 21.89 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. [2019-11-26 02:23:20,743 INFO L168 Benchmark]: RCFGBuilder took 446.55 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:23:20,744 INFO L168 Benchmark]: TraceAbstraction took 1676.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.8 MB). Peak memory consumption was 82.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:23:20,747 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 338.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.21 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 21.89 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 446.55 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1676.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.8 MB). Peak memory consumption was 82.8 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 0.1.24-6b5699a [2019-11-26 02:23:22,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:23:22,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:23:22,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:23:22,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:23:22,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:23:22,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:23:22,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:23:22,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:23:22,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:23:22,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:23:22,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:23:22,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:23:22,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:23:22,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:23:22,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:23:22,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:23:22,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:23:22,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:23:22,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:23:22,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:23:22,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:23:22,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:23:22,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:23:22,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:23:22,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:23:22,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:23:22,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:23:22,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:23:22,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:23:22,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:23:22,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:23:22,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:23:22,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:23:22,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:23:22,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:23:22,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:23:22,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:23:22,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:23:22,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:23:22,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:23:22,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:23:22,754 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:23:22,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:23:22,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:23:22,755 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:23:22,755 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:23:22,755 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:23:22,756 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:23:22,756 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:23:22,756 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:23:22,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:23:22,757 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:23:22,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:23:22,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:23:22,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:23:22,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:23:22,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:23:22,759 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:23:22,759 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:23:22,759 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:23:22,759 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:23:22,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:23:22,760 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:23:22,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:23:22,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:23:22,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:23:22,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:23:22,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:23:22,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:23:22,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:23:22,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:23:22,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:23:22,762 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:23:22,763 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:23:22,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:23:22,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:23:22,763 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_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb0916d32e80eb99af2bf326ffd82fd2d4cfa9bc [2019-11-26 02:23:23,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:23:23,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:23:23,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:23:23,024 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:23:23,025 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:23:23,025 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn4.c [2019-11-26 02:23:23,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data/ad66b9d3d/c3335834535744b4a89f19f0c8488452/FLAG1d07caf4a [2019-11-26 02:23:23,471 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:23:23,472 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/sv-benchmarks/c/array-fpi/ifeqn4.c [2019-11-26 02:23:23,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data/ad66b9d3d/c3335834535744b4a89f19f0c8488452/FLAG1d07caf4a [2019-11-26 02:23:23,926 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/data/ad66b9d3d/c3335834535744b4a89f19f0c8488452 [2019-11-26 02:23:23,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:23:23,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:23:23,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:23:23,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:23:23,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:23:23,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:23:23" (1/1) ... [2019-11-26 02:23:23,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1e667e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:23, skipping insertion in model container [2019-11-26 02:23:23,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:23:23" (1/1) ... [2019-11-26 02:23:23,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:23:23,960 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:23:24,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:23:24,164 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:23:24,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:23:24,202 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:23:24,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24 WrapperNode [2019-11-26 02:23:24,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:23:24,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:23:24,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:23:24,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:23:24,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:23:24,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:23:24,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:23:24,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:23:24,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... [2019-11-26 02:23:24,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:23:24,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:23:24,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:23:24,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:23:24,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:23:24,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-11-26 02:23:24,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:23:24,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:23:24,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:23:24,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2019-11-26 02:23:24,751 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:23:24,751 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:23:24,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:23:24 BoogieIcfgContainer [2019-11-26 02:23:24,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:23:24,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:23:24,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:23:24,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:23:24,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:23:23" (1/3) ... [2019-11-26 02:23:24,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586c132e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:23:24, skipping insertion in model container [2019-11-26 02:23:24,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:23:24" (2/3) ... [2019-11-26 02:23:24,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586c132e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:23:24, skipping insertion in model container [2019-11-26 02:23:24,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:23:24" (3/3) ... [2019-11-26 02:23:24,759 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn4.c [2019-11-26 02:23:24,768 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:23:24,773 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:23:24,780 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:23:24,800 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:23:24,801 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:23:24,801 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:23:24,801 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:23:24,801 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:23:24,801 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:23:24,801 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:23:24,802 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:23:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-26 02:23:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:23:24,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:24,819 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:24,819 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:24,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:24,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1201566748, now seen corresponding path program 1 times [2019-11-26 02:23:24,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:23:24,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [548231432] [2019-11-26 02:23:24,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:24,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:23:24,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:24,939 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:24,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [548231432] [2019-11-26 02:23:24,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:23:24,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:23:24,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680451781] [2019-11-26 02:23:24,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:23:24,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:23:24,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:23:24,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:23:24,964 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-26 02:23:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:23:24,977 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-11-26 02:23:24,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:23:24,978 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:23:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:23:24,987 INFO L225 Difference]: With dead ends: 36 [2019-11-26 02:23:24,987 INFO L226 Difference]: Without dead ends: 17 [2019-11-26 02:23:24,990 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:23:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-26 02:23:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-26 02:23:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 02:23:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-26 02:23:25,019 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-11-26 02:23:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:23:25,020 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-26 02:23:25,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:23:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-26 02:23:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:23:25,021 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:25,021 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:25,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:25,223 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:25,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1920794649, now seen corresponding path program 1 times [2019-11-26 02:23:25,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:23:25,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [290529469] [2019-11-26 02:23:25,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:25,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:23:25,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:25,424 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:25,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [290529469] [2019-11-26 02:23:25,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:23:25,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:23:25,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224292264] [2019-11-26 02:23:25,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:23:25,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:23:25,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:23:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:23:25,457 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-11-26 02:23:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:23:25,591 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-11-26 02:23:25,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:23:25,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-26 02:23:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:23:25,593 INFO L225 Difference]: With dead ends: 35 [2019-11-26 02:23:25,593 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:23:25,594 INFO L630 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 [2019-11-26 02:23:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:23:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-26 02:23:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 02:23:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-26 02:23:25,598 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2019-11-26 02:23:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:23:25,598 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-26 02:23:25,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:23:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-26 02:23:25,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:23:25,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:25,600 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:25,803 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:25,807 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:25,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:25,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1948223762, now seen corresponding path program 1 times [2019-11-26 02:23:25,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:23:25,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1726040839] [2019-11-26 02:23:25,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:26,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:23:26,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:26,085 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:26,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1726040839] [2019-11-26 02:23:26,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:23:26,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-11-26 02:23:26,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662854390] [2019-11-26 02:23:26,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:23:26,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:23:26,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:23:26,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:23:26,291 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 7 states. [2019-11-26 02:23:26,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:23:26,461 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-11-26 02:23:26,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:23:26,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-26 02:23:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:23:26,469 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:23:26,469 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:23:26,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:23:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:23:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-26 02:23:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:23:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-26 02:23:26,473 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-11-26 02:23:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:23:26,474 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-26 02:23:26,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:23:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-26 02:23:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:23:26,474 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:26,475 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:26,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:26,678 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:26,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:26,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1326513248, now seen corresponding path program 1 times [2019-11-26 02:23:26,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:23:26,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1964260107] [2019-11-26 02:23:26,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:26,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:23:26,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:26,897 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:26,910 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 29 treesize of output 21 [2019-11-26 02:23:26,911 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:23:26,923 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:23:26,924 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:23:26,924 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:24 [2019-11-26 02:23:26,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:27,006 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:27,536 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-11-26 02:23:27,696 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:23:27,696 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 76 [2019-11-26 02:23:27,718 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:27,798 INFO L343 Elim1Store]: treesize reduction 212, result has 19.7 percent of original size [2019-11-26 02:23:27,799 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 216 treesize of output 209 [2019-11-26 02:23:27,801 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:23:27,815 INFO L567 ElimStorePlain]: treesize reduction 221, result has 0.5 percent of original size [2019-11-26 02:23:27,816 INFO L464 ElimStorePlain]: Eliminatee v_arrayElimArr_1 vanished before elimination [2019-11-26 02:23:27,817 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:23:27,818 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:23:27,818 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:23:27,818 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:78, output treesize:1 [2019-11-26 02:23:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:27,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1964260107] [2019-11-26 02:23:27,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:23:27,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-11-26 02:23:27,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917233786] [2019-11-26 02:23:27,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:23:27,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:23:27,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:23:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:23:27,822 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 9 states. [2019-11-26 02:23:28,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:23:28,920 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-11-26 02:23:28,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:23:28,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-11-26 02:23:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:23:28,928 INFO L225 Difference]: With dead ends: 39 [2019-11-26 02:23:28,928 INFO L226 Difference]: Without dead ends: 37 [2019-11-26 02:23:28,929 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:23:28,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-26 02:23:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2019-11-26 02:23:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:23:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-26 02:23:28,935 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 16 [2019-11-26 02:23:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:23:28,935 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-26 02:23:28,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:23:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-26 02:23:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:23:28,936 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:28,937 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:29,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:29,140 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:29,141 INFO L82 PathProgramCache]: Analyzing trace with hash 448494114, now seen corresponding path program 1 times [2019-11-26 02:23:29,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:23:29,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1550254039] [2019-11-26 02:23:29,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:29,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:23:29,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:29,196 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:29,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1550254039] [2019-11-26 02:23:29,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:23:29,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:23:29,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945282260] [2019-11-26 02:23:29,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:23:29,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:23:29,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:23:29,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:23:29,200 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 3 states. [2019-11-26 02:23:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:23:29,332 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-26 02:23:29,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:23:29,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-26 02:23:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:23:29,341 INFO L225 Difference]: With dead ends: 43 [2019-11-26 02:23:29,341 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:23:29,342 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:23:29,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:23:29,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-26 02:23:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:23:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-26 02:23:29,346 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2019-11-26 02:23:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:23:29,347 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-26 02:23:29,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:23:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-26 02:23:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-26 02:23:29,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:29,348 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:29,550 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:29,551 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:29,551 INFO L82 PathProgramCache]: Analyzing trace with hash -579781034, now seen corresponding path program 1 times [2019-11-26 02:23:29,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:23:29,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [951596375] [2019-11-26 02:23:29,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:29,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:23:29,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:29,918 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:30,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [951596375] [2019-11-26 02:23:30,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976326657] [2019-11-26 02:23:30,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:23:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:30,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:23:30,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:30,251 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:23:30,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:23:30,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 14 [2019-11-26 02:23:30,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396027033] [2019-11-26 02:23:30,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:23:30,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:23:30,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:23:30,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:23:30,264 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 14 states. [2019-11-26 02:23:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:23:31,169 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2019-11-26 02:23:31,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:23:31,178 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2019-11-26 02:23:31,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:23:31,179 INFO L225 Difference]: With dead ends: 74 [2019-11-26 02:23:31,179 INFO L226 Difference]: Without dead ends: 34 [2019-11-26 02:23:31,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:23:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-26 02:23:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-11-26 02:23:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 02:23:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-26 02:23:31,184 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2019-11-26 02:23:31,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:23:31,184 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-26 02:23:31,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:23:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-26 02:23:31,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:23:31,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:23:31,185 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:23:31,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:23:31,586 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:23:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:23:31,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1490131379, now seen corresponding path program 1 times [2019-11-26 02:23:31,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:23:31,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1330486584] [2019-11-26 02:23:31,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41e46e1-f282-404f-9ace-d6bb902d439d/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:23:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:23:32,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-26 02:23:32,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:23:32,479 INFO L377 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 10 treesize of output 8 [2019-11-26 02:23:32,480 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:23:32,490 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:23:32,490 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:23:32,490 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-26 02:23:32,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,514 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,515 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2019-11-26 02:23:32,515 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:23:32,532 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:23:32,532 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:23:32,533 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:35 [2019-11-26 02:23:32,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,595 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:32,596 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,598 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,599 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,600 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:32,601 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,602 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,603 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,605 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 91 [2019-11-26 02:23:32,607 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:23:32,632 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:23:32,632 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:23:32,633 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:144, output treesize:131 [2019-11-26 02:23:32,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,757 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,758 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,760 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,762 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,767 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,769 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 121 [2019-11-26 02:23:32,770 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:23:32,835 INFO L567 ElimStorePlain]: treesize reduction 4, result has 96.9 percent of original size [2019-11-26 02:23:32,835 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:23:32,836 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:163, output treesize:123 [2019-11-26 02:23:32,982 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,983 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,985 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,986 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,987 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,988 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,994 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,996 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:32,998 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,000 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,001 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:33,002 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,004 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,005 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,007 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,008 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,009 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:33,013 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,016 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,017 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:33,018 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:33,019 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,020 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,023 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:23:33,026 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:33,027 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:23:33,210 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-11-26 02:23:33,210 INFO L343 Elim1Store]: treesize reduction 16, result has 87.4 percent of original size [2019-11-26 02:23:33,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 278 treesize of output 317 [2019-11-26 02:23:33,215 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:23:33,323 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-11-26 02:23:33,324 INFO L567 ElimStorePlain]: treesize reduction 337, result has 45.6 percent of original size [2019-11-26 02:23:33,326 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:23:33,326 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:281, output treesize:283 [2019-11-26 02:23:33,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:23:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:23:33,707 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:23:34,610 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-11-26 02:23:35,613 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-11-26 02:23:46,669 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-11-26 02:23:48,255 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-26 02:23:53,583 WARN L192 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-11-26 02:24:01,403 WARN L192 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-11-26 02:24:01,613 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:24:01,614 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) 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.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.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.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java: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) [2019-11-26 02:24:01,616 INFO L168 Benchmark]: Toolchain (without parser) took 37687.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.3 MB). Free memory was 961.8 MB in the beginning and 1.0 GB in the end (delta: -67.3 MB). Peak memory consumption was 145.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:01,617 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:24:01,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.95 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:01,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:01,618 INFO L168 Benchmark]: Boogie Preprocessor took 24.60 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. [2019-11-26 02:24:01,619 INFO L168 Benchmark]: RCFGBuilder took 440.98 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:01,619 INFO L168 Benchmark]: TraceAbstraction took 36862.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.8 MB). Peak memory consumption was 153.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:01,622 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.95 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.60 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 440.98 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 36862.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.8 MB). Peak memory consumption was 153.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...