./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/lcp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/lcp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99469a4d9e5d9407366653a2d47248a07b3d0735 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/lcp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99469a4d9e5d9407366653a2d47248a07b3d0735 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:19:27,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:19:27,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:19:27,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:19:27,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:19:27,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:19:27,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:19:27,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:19:27,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:19:27,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:19:27,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:19:27,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:19:27,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:19:27,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:19:27,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:19:27,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:19:27,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:19:27,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:19:27,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:19:27,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:19:27,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:19:27,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:19:27,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:19:27,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:19:27,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:19:27,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:19:27,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:19:27,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:19:27,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:19:27,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:19:27,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:19:27,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:19:27,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:19:27,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:19:27,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:19:27,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:19:27,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:19:27,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:19:27,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:19:27,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:19:27,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:19:27,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:19:27,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:19:27,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:19:27,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:19:27,737 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:19:27,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:19:27,737 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:19:27,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:19:27,737 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:19:27,737 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:19:27,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:19:27,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:19:27,738 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:19:27,738 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:19:27,738 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:19:27,738 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:19:27,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:19:27,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:19:27,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:19:27,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:19:27,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:19:27,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:19:27,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:19:27,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:19:27,740 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:19:27,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:19:27,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:19:27,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:19:27,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:19:27,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:19:27,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:19:27,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:19:27,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:19:27,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:19:27,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:19:27,741 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:19:27,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:19:27,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:19:27,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:19:27,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:19:27,742 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99469a4d9e5d9407366653a2d47248a07b3d0735 [2020-12-09 12:19:27,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:19:27,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:19:27,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:19:27,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:19:27,935 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:19:27,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/../../sv-benchmarks/c/verifythis/lcp.c [2020-12-09 12:19:27,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data/0c54bdb85/ca87792a6f144d13aa5124e0e3b16495/FLAG7be6091dd [2020-12-09 12:19:28,373 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:19:28,373 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/sv-benchmarks/c/verifythis/lcp.c [2020-12-09 12:19:28,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data/0c54bdb85/ca87792a6f144d13aa5124e0e3b16495/FLAG7be6091dd [2020-12-09 12:19:28,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data/0c54bdb85/ca87792a6f144d13aa5124e0e3b16495 [2020-12-09 12:19:28,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:19:28,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:19:28,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:19:28,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:19:28,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:19:28,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66460c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28, skipping insertion in model container [2020-12-09 12:19:28,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:19:28,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:19:28,538 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/sv-benchmarks/c/verifythis/lcp.c[515,528] [2020-12-09 12:19:28,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:19:28,561 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:19:28,570 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/sv-benchmarks/c/verifythis/lcp.c[515,528] [2020-12-09 12:19:28,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:19:28,588 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:19:28,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28 WrapperNode [2020-12-09 12:19:28,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:19:28,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:19:28,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:19:28,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:19:28,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:19:28,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:19:28,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:19:28,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:19:28,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... [2020-12-09 12:19:28,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:19:28,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:19:28,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:19:28,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:19:28,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/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 [2020-12-09 12:19:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:19:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:19:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 12:19:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:19:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:19:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 12:19:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:19:29,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:19:29,093 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-09 12:19:29,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:19:29 BoogieIcfgContainer [2020-12-09 12:19:29,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:19:29,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:19:29,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:19:29,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:19:29,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:19:28" (1/3) ... [2020-12-09 12:19:29,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6c8e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:19:29, skipping insertion in model container [2020-12-09 12:19:29,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:28" (2/3) ... [2020-12-09 12:19:29,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6c8e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:19:29, skipping insertion in model container [2020-12-09 12:19:29,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:19:29" (3/3) ... [2020-12-09 12:19:29,101 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2020-12-09 12:19:29,111 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:19:29,113 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 12:19:29,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 12:19:29,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:19:29,137 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:19:29,138 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:19:29,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:19:29,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:19:29,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:19:29,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:19:29,138 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:19:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-09 12:19:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 12:19:29,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:19:29,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 12:19:29,150 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:19:29,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:19:29,154 INFO L82 PathProgramCache]: Analyzing trace with hash 113828207, now seen corresponding path program 1 times [2020-12-09 12:19:29,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:19:29,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084413221] [2020-12-09 12:19:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:19:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:19:29,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084413221] [2020-12-09 12:19:29,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:19:29,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:19:29,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822860843] [2020-12-09 12:19:29,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:19:29,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:19:29,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:19:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:19:29,309 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-12-09 12:19:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:19:29,321 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2020-12-09 12:19:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:19:29,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 12:19:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:19:29,330 INFO L225 Difference]: With dead ends: 27 [2020-12-09 12:19:29,330 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 12:19:29,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:19:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 12:19:29,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 12:19:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 12:19:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 12:19:29,379 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2020-12-09 12:19:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:19:29,379 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 12:19:29,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:19:29,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 12:19:29,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 12:19:29,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:19:29,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 12:19:29,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:19:29,380 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:19:29,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:19:29,381 INFO L82 PathProgramCache]: Analyzing trace with hash -722672108, now seen corresponding path program 1 times [2020-12-09 12:19:29,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:19:29,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94257292] [2020-12-09 12:19:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:19:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:19:29,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94257292] [2020-12-09 12:19:29,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:19:29,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:19:29,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847634415] [2020-12-09 12:19:29,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:19:29,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:19:29,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:19:29,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:19:29,490 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-12-09 12:19:29,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:19:29,511 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-12-09 12:19:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:19:29,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 12:19:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:19:29,512 INFO L225 Difference]: With dead ends: 12 [2020-12-09 12:19:29,512 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 12:19:29,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:19:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 12:19:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 12:19:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 12:19:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-12-09 12:19:29,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2020-12-09 12:19:29,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:19:29,516 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-12-09 12:19:29,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:19:29,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-12-09 12:19:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 12:19:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:19:29,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:19:29,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:19:29,517 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:19:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:19:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1550187143, now seen corresponding path program 1 times [2020-12-09 12:19:29,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:19:29,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938755935] [2020-12-09 12:19:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:19:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:19:29,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938755935] [2020-12-09 12:19:29,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:19:29,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:19:29,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529141674] [2020-12-09 12:19:29,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 12:19:29,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:19:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 12:19:29,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:19:29,636 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2020-12-09 12:19:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:19:29,715 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-12-09 12:19:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 12:19:29,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-09 12:19:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:19:29,716 INFO L225 Difference]: With dead ends: 19 [2020-12-09 12:19:29,716 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 12:19:29,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 12:19:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 12:19:29,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 12:19:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 12:19:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 12:19:29,719 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-12-09 12:19:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:19:29,719 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 12:19:29,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 12:19:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 12:19:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 12:19:29,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:19:29,720 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:19:29,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 12:19:29,720 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:19:29,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:19:29,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1983877492, now seen corresponding path program 1 times [2020-12-09 12:19:29,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:19:29,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357562966] [2020-12-09 12:19:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:19:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:19:29,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357562966] [2020-12-09 12:19:29,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842227744] [2020-12-09 12:19:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/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 [2020-12-09 12:19:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:29,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-09 12:19:29,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:19:29,948 INFO L382 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 7 treesize of output 6 [2020-12-09 12:19:29,949 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:19:29,956 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:19:29,957 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 12:19:29,958 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:16 [2020-12-09 12:19:30,004 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,014 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,023 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:19:30,024 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,029 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:19:30,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,037 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:19:30,041 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:19:30,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,047 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:19:30,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,052 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-09 12:19:30,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,057 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,094 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2020-12-09 12:19:30,096 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:19:30,102 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2020-12-09 12:19:30,103 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 12:19:30,138 INFO L625 ElimStorePlain]: treesize reduction 56, result has 30.9 percent of original size [2020-12-09 12:19:30,141 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-09 12:19:30,141 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:97, output treesize:18 [2020-12-09 12:19:30,166 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,168 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,173 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 12:19:30,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:19:30,212 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:19:30,213 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-09 12:19:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 12:19:30,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [438134654] [2020-12-09 12:19:30,309 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 12:19:30,309 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 12:19:30,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 12:19:30,316 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 12:19:30,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 12:19:30,421 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 12:19:30,433 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 12:19:30,959 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-12-09 12:19:31,094 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 12:19:31,879 WARN L197 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 153 [2020-12-09 12:19:32,117 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-12-09 12:19:32,257 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-09 12:19:32,493 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-12-09 12:19:33,109 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 152 [2020-12-09 12:19:33,716 WARN L197 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-12-09 12:19:34,318 WARN L197 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 144 [2020-12-09 12:19:35,014 WARN L197 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 158 [2020-12-09 12:19:35,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 12:19:35,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 12:19:35,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2020-12-09 12:19:35,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872808278] [2020-12-09 12:19:35,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 12:19:35,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:19:35,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 12:19:35,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-12-09 12:19:35,017 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2020-12-09 12:19:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:19:35,079 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-12-09 12:19:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 12:19:35,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-09 12:19:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:19:35,080 INFO L225 Difference]: With dead ends: 12 [2020-12-09 12:19:35,080 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:19:35,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-12-09 12:19:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:19:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:19:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:19:35,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:19:35,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 12:19:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:19:35,082 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:19:35,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 12:19:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:19:35,082 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:19:35,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-12-09 12:19:35,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:19:35,333 INFO L262 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-12-09 12:19:35,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 12:19:35,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:19:35,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 12:19:35,333 INFO L265 CegarLoopResult]: At program point L24(lines 24 33) the Hoare annotation is: true [2020-12-09 12:19:35,333 INFO L262 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-12-09 12:19:35,333 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-12-09 12:19:35,333 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:19:35,333 INFO L262 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-12-09 12:19:35,334 INFO L262 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-12-09 12:19:35,334 INFO L262 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-12-09 12:19:35,334 INFO L262 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-12-09 12:19:35,334 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-12-09 12:19:35,334 INFO L258 CegarLoopResult]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_lcp_~n) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_lcp_~x) (= (select |#memory_int| ULTIMATE.start_lcp_~a.base) .cse0) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_lcp_~y))) [2020-12-09 12:19:35,334 INFO L258 CegarLoopResult]: At program point L18-6(lines 18 20) the Hoare annotation is: (let ((.cse0 (select |#memory_int| ULTIMATE.start_lcp_~a.base)) (.cse1 (* ULTIMATE.start_lcp_~l~0 4))) (and (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_lcp_~n) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_lcp_~x) (or (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~x~0)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~y~0))) (= (select .cse0 (+ .cse1 (* ULTIMATE.start_lcp_~y 4) ULTIMATE.start_lcp_~a.offset)) 0) (= (select .cse0 (+ .cse1 (* ULTIMATE.start_lcp_~x 4) ULTIMATE.start_lcp_~a.offset)) 0) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) ((as const (Array Int Int)) 0)) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_lcp_~y))) [2020-12-09 12:19:35,338 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 12:19:35,340 INFO L168 Benchmark]: Toolchain (without parser) took 6946.05 ms. Allocated memory was 125.8 MB in the beginning and 209.7 MB in the end (delta: 83.9 MB). Free memory was 91.3 MB in the beginning and 139.7 MB in the end (delta: -48.4 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:19:35,340 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 125.8 MB. Free memory was 104.6 MB in the beginning and 104.6 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:19:35,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.53 ms. Allocated memory is still 125.8 MB. Free memory was 91.0 MB in the beginning and 100.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:19:35,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.61 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 99.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:19:35,341 INFO L168 Benchmark]: Boogie Preprocessor took 24.37 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 97.8 MB in the end (delta: 741.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:19:35,342 INFO L168 Benchmark]: RCFGBuilder took 452.65 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 59.5 MB in the end (delta: 38.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:19:35,342 INFO L168 Benchmark]: TraceAbstraction took 6243.03 ms. Allocated memory was 125.8 MB in the beginning and 209.7 MB in the end (delta: 83.9 MB). Free memory was 58.7 MB in the beginning and 139.7 MB in the end (delta: -81.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:19:35,344 INFO L339 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 125.8 MB. Free memory was 104.6 MB in the beginning and 104.6 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 193.53 ms. Allocated memory is still 125.8 MB. Free memory was 91.0 MB in the beginning and 100.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.61 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 99.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.37 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 97.8 MB in the end (delta: 741.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 452.65 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 59.5 MB in the end (delta: 38.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6243.03 ms. Allocated memory was 125.8 MB in the beginning and 209.7 MB in the end (delta: 83.9 MB). Free memory was 58.7 MB in the beginning and 139.7 MB in the end (delta: -81.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:19:36,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:19:36,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:19:36,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:19:36,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:19:36,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:19:36,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:19:36,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:19:36,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:19:36,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:19:36,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:19:36,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:19:36,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:19:36,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:19:36,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:19:36,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:19:36,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:19:36,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:19:36,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:19:36,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:19:36,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:19:36,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:19:36,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:19:36,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:19:36,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:19:36,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:19:36,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:19:36,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:19:36,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:19:36,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:19:36,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:19:36,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:19:36,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:19:36,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:19:36,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:19:36,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:19:36,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:19:36,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:19:36,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:19:37,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:19:37,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:19:37,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 12:19:37,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:19:37,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:19:37,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:19:37,027 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:19:37,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:19:37,027 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:19:37,027 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:19:37,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:19:37,027 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:19:37,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:19:37,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:19:37,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:19:37,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:19:37,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:19:37,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:19:37,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:19:37,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:19:37,030 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:19:37,030 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:19:37,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:19:37,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:19:37,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:19:37,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:19:37,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:19:37,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:19:37,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:19:37,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:19:37,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:19:37,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:19:37,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:19:37,036 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:19:37,036 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:19:37,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:19:37,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:19:37,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:19:37,037 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99469a4d9e5d9407366653a2d47248a07b3d0735 [2020-12-09 12:19:37,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:19:37,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:19:37,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:19:37,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:19:37,304 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:19:37,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/../../sv-benchmarks/c/verifythis/lcp.c [2020-12-09 12:19:37,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data/022d7b174/48b3f2463d4f4e86876dd42987ad6f6c/FLAG9ac419b74 [2020-12-09 12:19:37,720 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:19:37,721 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/sv-benchmarks/c/verifythis/lcp.c [2020-12-09 12:19:37,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data/022d7b174/48b3f2463d4f4e86876dd42987ad6f6c/FLAG9ac419b74 [2020-12-09 12:19:37,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/data/022d7b174/48b3f2463d4f4e86876dd42987ad6f6c [2020-12-09 12:19:37,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:19:37,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:19:37,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:19:37,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:19:37,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:19:37,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:37,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ba5a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37, skipping insertion in model container [2020-12-09 12:19:37,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:37,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:19:37,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:19:37,854 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/sv-benchmarks/c/verifythis/lcp.c[515,528] [2020-12-09 12:19:37,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:19:37,885 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:19:37,897 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/sv-benchmarks/c/verifythis/lcp.c[515,528] [2020-12-09 12:19:37,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:19:37,930 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:19:37,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37 WrapperNode [2020-12-09 12:19:37,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:19:37,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:19:37,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:19:37,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:19:37,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:37,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:37,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:19:37,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:19:37,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:19:37,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:19:37,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:37,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:37,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:37,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:38,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:38,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:38,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... [2020-12-09 12:19:38,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:19:38,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:19:38,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:19:38,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:19:38,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/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 [2020-12-09 12:19:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 12:19:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:19:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 12:19:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 12:19:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:19:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:19:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:19:38,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:19:38,338 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-09 12:19:38,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:19:38 BoogieIcfgContainer [2020-12-09 12:19:38,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:19:38,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:19:38,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:19:38,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:19:38,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:19:37" (1/3) ... [2020-12-09 12:19:38,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4efb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:19:38, skipping insertion in model container [2020-12-09 12:19:38,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:19:37" (2/3) ... [2020-12-09 12:19:38,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4efb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:19:38, skipping insertion in model container [2020-12-09 12:19:38,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:19:38" (3/3) ... [2020-12-09 12:19:38,346 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2020-12-09 12:19:38,359 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:19:38,362 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 12:19:38,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 12:19:38,393 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:19:38,393 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:19:38,394 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:19:38,394 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:19:38,394 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:19:38,394 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:19:38,394 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:19:38,394 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:19:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-09 12:19:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 12:19:38,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:19:38,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:19:38,410 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:19:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:19:38,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1579702917, now seen corresponding path program 1 times [2020-12-09 12:19:38,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:19:38,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422970896] [2020-12-09 12:19:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 12:19:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:38,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 12:19:38,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:19:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:19:38,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:19:38,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422970896] [2020-12-09 12:19:38,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:19:38,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:19:38,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780809680] [2020-12-09 12:19:38,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:19:38,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:19:38,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:19:38,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:19:38,583 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-09 12:19:38,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:19:38,598 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2020-12-09 12:19:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:19:38,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-09 12:19:38,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:19:38,607 INFO L225 Difference]: With dead ends: 51 [2020-12-09 12:19:38,607 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 12:19:38,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:19:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 12:19:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 12:19:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 12:19:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-09 12:19:38,638 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-12-09 12:19:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:19:38,638 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-09 12:19:38,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:19:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-09 12:19:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 12:19:38,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:19:38,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:19:38,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:19:38,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:19:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:19:38,840 INFO L82 PathProgramCache]: Analyzing trace with hash 588290746, now seen corresponding path program 1 times [2020-12-09 12:19:38,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:19:38,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216769647] [2020-12-09 12:19:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 12:19:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:38,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 12:19:38,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:19:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:19:38,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:19:38,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216769647] [2020-12-09 12:19:38,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:19:38,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:19:38,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766150251] [2020-12-09 12:19:38,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:19:38,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:19:38,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:19:38,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:19:38,977 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2020-12-09 12:19:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:19:39,035 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-12-09 12:19:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:19:39,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 12:19:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:19:39,036 INFO L225 Difference]: With dead ends: 37 [2020-12-09 12:19:39,036 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 12:19:39,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:19:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 12:19:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-09 12:19:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 12:19:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-12-09 12:19:39,040 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2020-12-09 12:19:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:19:39,040 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-12-09 12:19:39,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:19:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-12-09 12:19:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 12:19:39,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:19:39,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:19:39,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 12:19:39,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:19:39,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:19:39,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1407848843, now seen corresponding path program 1 times [2020-12-09 12:19:39,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:19:39,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800722753] [2020-12-09 12:19:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 12:19:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:39,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-09 12:19:39,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:19:39,714 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:39,721 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 12:19:39,723 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 12:19:43,827 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:19:43,827 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 104 [2020-12-09 12:19:43,836 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-09 12:19:43,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 12:19:43,837 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-09 12:19:43,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 12:19:43,838 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-09 12:19:43,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:43,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:43,842 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:19:43,844 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:19:43,846 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 12:19:43,848 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:43,853 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:19:43,877 INFO L625 ElimStorePlain]: treesize reduction 71, result has 6.6 percent of original size [2020-12-09 12:19:43,878 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 12:19:43,878 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:55, output treesize:5 [2020-12-09 12:19:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:19:43,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:19:50,075 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-12-09 12:19:50,076 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:19:56,547 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-09 12:19:56,547 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:19:56,548 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 152 [2020-12-09 12:19:56,554 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 3, 1] term [2020-12-09 12:19:56,554 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-12-09 12:19:56,555 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 3, 1] term [2020-12-09 12:19:56,556 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-09 12:19:56,556 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 1] term [2020-12-09 12:19:56,556 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-09 12:19:56,560 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-09 12:19:56,561 INFO L639 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-12-09 12:19:56,563 INFO L639 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-12-09 12:19:56,566 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-09 12:19:56,568 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-09 12:19:56,573 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:19:56,927 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-09 12:19:56,927 INFO L625 ElimStorePlain]: treesize reduction 36, result has 71.9 percent of original size [2020-12-09 12:19:56,929 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-09 12:19:56,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800722753] [2020-12-09 12:19:56,931 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-12-09 12:19:56,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [947309561] [2020-12-09 12:19:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt [2020-12-09 12:19:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:19:57,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 12:19:57,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:19:57,039 INFO L382 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 7 treesize of output 6 [2020-12-09 12:19:57,040 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:19:57,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:19:57,042 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 12:19:57,042 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-12-09 12:19:57,208 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:19:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 12:19:57,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:20:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 12:20:12,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609590062] [2020-12-09 12:20:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:20:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:20:12,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 12:20:12,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:20:12,362 INFO L382 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 7 treesize of output 6 [2020-12-09 12:20:12,363 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:20:12,365 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:20:12,366 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 12:20:12,366 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-12-09 12:20:12,374 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:20:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 12:20:12,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:20:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 12:20:12,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2020-12-09 12:20:12,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 9 [2020-12-09 12:20:12,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544072805] [2020-12-09 12:20:12,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 12:20:12,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:20:12,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 12:20:12,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=478, Unknown=13, NotChecked=0, Total=552 [2020-12-09 12:20:12,413 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 9 states. [2020-12-09 12:20:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:20:12,605 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-09 12:20:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 12:20:12,606 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-12-09 12:20:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:20:12,607 INFO L225 Difference]: With dead ends: 39 [2020-12-09 12:20:12,607 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 12:20:12,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=96, Invalid=593, Unknown=13, NotChecked=0, Total=702 [2020-12-09 12:20:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 12:20:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-12-09 12:20:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 12:20:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-12-09 12:20:12,611 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2020-12-09 12:20:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:20:12,611 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-12-09 12:20:12,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 12:20:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-12-09 12:20:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 12:20:12,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:20:12,611 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:20:13,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 cvc4 --incremental --print-success --lang smt [2020-12-09 12:20:13,215 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:20:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:20:13,216 INFO L82 PathProgramCache]: Analyzing trace with hash 598502217, now seen corresponding path program 1 times [2020-12-09 12:20:13,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:20:13,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432448533] [2020-12-09 12:20:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 12:20:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:20:13,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-09 12:20:13,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:20:13,620 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:20:13,622 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 12:20:13,622 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 12:20:17,705 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:20:17,706 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 104 [2020-12-09 12:20:17,708 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-09 12:20:17,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 12:20:17,709 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-09 12:20:17,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 12:20:17,710 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-09 12:20:17,710 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:20:17,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:20:17,712 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:20:17,714 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 12:20:17,716 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 12:20:17,716 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:20:17,718 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:20:17,744 INFO L625 ElimStorePlain]: treesize reduction 71, result has 6.6 percent of original size [2020-12-09 12:20:17,744 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 12:20:17,744 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:55, output treesize:5 [2020-12-09 12:20:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:20:17,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:20:23,928 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-12-09 12:20:23,928 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:20:31,728 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-09 12:20:31,728 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:20:31,728 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 152 [2020-12-09 12:20:31,732 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 3, 1] term [2020-12-09 12:20:31,732 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-12-09 12:20:31,736 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 3, 1] term [2020-12-09 12:20:31,736 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-09 12:20:31,736 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 1] term [2020-12-09 12:20:31,736 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-09 12:20:31,738 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-09 12:20:31,739 INFO L639 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-12-09 12:20:31,740 INFO L639 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-12-09 12:20:31,742 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-09 12:20:31,742 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-12-09 12:20:31,745 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:20:32,354 WARN L197 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-09 12:20:32,354 INFO L625 ElimStorePlain]: treesize reduction 40, result has 69.7 percent of original size [2020-12-09 12:20:32,355 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-09 12:20:32,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432448533] [2020-12-09 12:20:32,356 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-12-09 12:20:32,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [351949083] [2020-12-09 12:20:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt [2020-12-09 12:20:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:20:32,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 12:20:32,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:20:32,451 INFO L382 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 7 treesize of output 6 [2020-12-09 12:20:32,452 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:20:32,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:20:32,454 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 12:20:32,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-12-09 12:20:32,606 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:20:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 12:20:32,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:20:32,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:20:32,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 12:20:32,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216288766] [2020-12-09 12:20:32,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 12:20:32,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:20:32,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 12:20:32,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=324, Unknown=6, NotChecked=0, Total=380 [2020-12-09 12:20:32,613 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-12-09 12:20:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:20:32,735 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-09 12:20:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 12:20:32,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 12:20:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:20:32,736 INFO L225 Difference]: With dead ends: 25 [2020-12-09 12:20:32,736 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 12:20:32,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=82, Invalid=418, Unknown=6, NotChecked=0, Total=506 [2020-12-09 12:20:32,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 12:20:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 12:20:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 12:20:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-09 12:20:32,739 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2020-12-09 12:20:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:20:32,739 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-09 12:20:32,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 12:20:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-09 12:20:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 12:20:32,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:20:32,740 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:20:33,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt [2020-12-09 12:20:33,142 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:20:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:20:33,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1574202674, now seen corresponding path program 1 times [2020-12-09 12:20:33,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:20:33,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836717690] [2020-12-09 12:20:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 12:20:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:20:33,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-09 12:20:33,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:20:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:20:34,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:20:35,670 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 12:20:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:20:35,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836717690] [2020-12-09 12:20:35,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [961290968] [2020-12-09 12:20:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 12:20:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:20:35,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-09 12:20:35,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:20:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:20:35,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:20:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:20:35,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810571902] [2020-12-09 12:20:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:20:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:20:36,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-09 12:20:36,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:20:36,394 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-09 12:20:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:20:36,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:20:36,541 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:20:36,542 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:20:38,635 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-12-09 12:20:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:20:38,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 12:20:38,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14, 10, 15, 11] total 31 [2020-12-09 12:20:38,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868005458] [2020-12-09 12:20:38,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-09 12:20:38,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:20:38,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-09 12:20:38,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2020-12-09 12:20:38,645 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 31 states. [2020-12-09 12:20:39,590 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-12-09 12:20:40,008 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-12-09 12:20:40,445 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-12-09 12:20:41,007 WARN L197 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2020-12-09 12:20:41,595 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-12-09 12:20:41,927 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-12-09 12:20:42,652 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-09 12:20:43,074 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-12-09 12:20:43,581 WARN L197 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-12-09 12:20:44,153 WARN L197 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-12-09 12:20:44,513 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-12-09 12:20:45,296 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-12-09 12:20:45,734 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-12-09 12:20:46,392 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-12-09 12:20:47,188 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-09 12:20:47,635 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-12-09 12:20:52,680 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-12-09 12:20:53,148 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-12-09 12:20:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:20:55,811 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-12-09 12:20:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-09 12:20:55,812 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 22 [2020-12-09 12:20:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:20:55,813 INFO L225 Difference]: With dead ends: 72 [2020-12-09 12:20:55,813 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 12:20:55,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=714, Invalid=2366, Unknown=0, NotChecked=0, Total=3080 [2020-12-09 12:20:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 12:20:55,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-12-09 12:20:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 12:20:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-12-09 12:20:55,820 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-12-09 12:20:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:20:55,820 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-12-09 12:20:55,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-09 12:20:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-12-09 12:20:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 12:20:55,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:20:55,821 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:20:56,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:20:56,424 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:20:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:20:56,426 INFO L82 PathProgramCache]: Analyzing trace with hash -437965597, now seen corresponding path program 2 times [2020-12-09 12:20:56,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:20:56,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728992574] [2020-12-09 12:20:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 12:20:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:20:56,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-09 12:20:56,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:20:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:20:58,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:21:00,065 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 12:21:00,585 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 12:21:01,204 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 12:21:01,958 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 12:21:02,719 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-12-09 12:21:03,814 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-12-09 12:21:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:21:03,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728992574] [2020-12-09 12:21:03,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [211475998] [2020-12-09 12:21:03,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 12:21:03,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-09 12:21:03,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 12:21:03,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-09 12:21:03,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:21:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 12:21:05,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:21:06,197 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:21:06,197 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:21:07,069 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-12-09 12:21:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 12:21:23,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646423124] [2020-12-09 12:21:23,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8364dc53-262d-4260-a04f-c8aad811cf38/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:21:24,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-09 12:21:24,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 12:21:24,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-09 12:21:24,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:21:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-09 12:21:24,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:21:24,633 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:21:24,634 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:21:24,638 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-12-09 12:21:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-09 12:21:29,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 12:21:29,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 12, 9, 12, 9] total 44 [2020-12-09 12:21:29,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323344228] [2020-12-09 12:21:29,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-09 12:21:29,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:21:29,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-09 12:21:29,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1589, Unknown=1, NotChecked=0, Total=1892 [2020-12-09 12:21:29,169 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 44 states. [2020-12-09 12:21:30,762 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2020-12-09 12:21:31,083 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-12-09 12:21:31,346 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2020-12-09 12:21:31,591 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2020-12-09 12:21:32,001 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-12-09 12:21:32,325 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-12-09 12:21:32,763 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-12-09 12:21:33,543 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-12-09 12:21:33,809 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-12-09 12:21:34,245 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-12-09 12:21:34,567 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-12-09 12:21:35,222 WARN L197 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-12-09 12:21:35,533 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-12-09 12:21:36,022 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-12-09 12:21:36,920 WARN L197 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-12-09 12:21:37,636 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-12-09 12:21:38,013 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-12-09 12:21:38,623 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2020-12-09 12:21:39,860 WARN L197 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2020-12-09 12:21:40,815 WARN L197 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-12-09 12:21:41,120 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-12-09 12:21:42,104 WARN L197 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2020-12-09 12:21:42,513 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-12-09 12:21:43,019 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-09 12:21:43,746 WARN L197 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-12-09 12:21:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:21:43,783 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-12-09 12:21:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-09 12:21:43,786 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 31 [2020-12-09 12:21:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:21:43,786 INFO L225 Difference]: With dead ends: 59 [2020-12-09 12:21:43,787 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:21:43,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 128 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1682 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=1053, Invalid=4058, Unknown=1, NotChecked=0, Total=5112 [2020-12-09 12:21:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:21:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:21:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:21:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:21:43,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-12-09 12:21:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:21:43,789 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:21:43,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-09 12:21:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:21:43,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:21:44,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt,12 mathsat -unsat_core_generation=3 [2020-12-09 12:21:44,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:21:46,821 WARN L197 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2020-12-09 12:21:46,981 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-09 12:21:46,982 INFO L262 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-12-09 12:21:46,982 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L265 CegarLoopResult]: At program point L48(lines 35 49) the Hoare annotation is: true [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L258 CegarLoopResult]: At program point L21(lines 16 22) the Hoare annotation is: (or (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= (select |#memory_int| ULTIMATE.start_lcp_~a.base) .cse0) (bvslt ULTIMATE.start_main_~n~0 (_ bv1073741824 32)) (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|) .cse0) (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0) (bvsge ULTIMATE.start_main_~y~0 (_ bv0 32)) (or (not (bvslt (bvadd ULTIMATE.start_main_~y~0 |ULTIMATE.start_lcp_#res|) ULTIMATE.start_main_~n~0)) (not (bvslt (bvadd ULTIMATE.start_main_~x~0 |ULTIMATE.start_lcp_#res|) ULTIMATE.start_main_~n~0))) (or (not (bvslt (bvadd ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~n~0)) (not (bvslt (bvadd ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~n~0))) (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32)))) (and (= ULTIMATE.start_lcp_~l~0 (_ bv0 32)) (= |ULTIMATE.start_lcp_#res| (_ bv0 32)))) [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-12-09 12:21:46,983 INFO L262 CegarLoopResult]: For program point L5-1(lines 5 7) no Hoare annotation was computed. [2020-12-09 12:21:46,984 INFO L262 CegarLoopResult]: For program point L5-2(lines 5 7) no Hoare annotation was computed. [2020-12-09 12:21:46,984 INFO L262 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-12-09 12:21:46,984 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-12-09 12:21:46,984 INFO L258 CegarLoopResult]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= (select |#memory_int| ULTIMATE.start_lcp_~a.base) .cse0) (bvslt ULTIMATE.start_main_~n~0 (_ bv1073741824 32)) (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|) .cse0) (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0) (bvsge ULTIMATE.start_main_~y~0 (_ bv0 32)) (= ULTIMATE.start_lcp_~y ULTIMATE.start_main_~y~0) (= ULTIMATE.start_lcp_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_lcp_~n ULTIMATE.start_main_~n~0) (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32)))) [2020-12-09 12:21:46,984 INFO L262 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2020-12-09 12:21:46,984 INFO L262 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-12-09 12:21:46,984 INFO L262 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-12-09 12:21:46,984 INFO L262 CegarLoopResult]: For program point L6-4(line 6) no Hoare annotation was computed. [2020-12-09 12:21:46,987 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 12:21:46,989 INFO L168 Benchmark]: Toolchain (without parser) took 129251.86 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 37.8 MB in the beginning and 33.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:21:46,990 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:21:46,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.46 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 42.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:21:46,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.12 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 41.9 MB in the beginning and 56.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:21:46,990 INFO L168 Benchmark]: Boogie Preprocessor took 23.66 ms. Allocated memory is still 73.4 MB. Free memory was 56.2 MB in the beginning and 54.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:21:46,991 INFO L168 Benchmark]: RCFGBuilder took 328.19 ms. Allocated memory is still 73.4 MB. Free memory was 54.9 MB in the beginning and 53.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:21:46,991 INFO L168 Benchmark]: TraceAbstraction took 128647.95 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 53.1 MB in the beginning and 33.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:21:46,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 192.46 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 42.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.12 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 41.9 MB in the beginning and 56.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.66 ms. Allocated memory is still 73.4 MB. Free memory was 56.2 MB in the beginning and 54.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 328.19 ms. Allocated memory is still 73.4 MB. Free memory was 54.9 MB in the beginning and 53.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 128647.95 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 53.1 MB in the beginning and 33.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...