./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0851c41d1dd56ed840a839dd5bb938ccfe6bf65 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0851c41d1dd56ed840a839dd5bb938ccfe6bf65 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:04,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:04,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:04,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:04,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:04,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:04,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:04,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:04,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:04,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:04,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:04,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:04,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:04,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:04,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:04,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:04,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:04,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:04,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:04,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:04,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:04,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:04,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:04,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:04,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:04,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:04,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:04,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:04,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:04,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:04,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:04,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:04,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:04,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:04,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:04,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:04,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:04,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:04,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:04,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:04,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:04,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:04,812 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:04,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:04,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:04,813 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:04,813 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:04,813 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:04,813 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:04,814 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:04,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:04,814 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:04,814 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:04,814 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:04,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:04,815 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:04,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:04,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:04,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:04,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:04,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:04,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:04,816 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:04,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:04,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:04,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:04,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:04,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:04,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:04,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:04,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:04,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:04,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:04,818 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:04,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:04,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:04,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:04,819 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0851c41d1dd56ed840a839dd5bb938ccfe6bf65 [2019-10-22 11:21:04,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:04,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:04,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:04,856 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:04,856 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:04,856 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2019-10-22 11:21:04,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data/13edd7826/879ddc6646ee42b38e0abbfbab858dde/FLAG9c3a2552c [2019-10-22 11:21:05,292 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:05,293 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2019-10-22 11:21:05,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data/13edd7826/879ddc6646ee42b38e0abbfbab858dde/FLAG9c3a2552c [2019-10-22 11:21:05,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data/13edd7826/879ddc6646ee42b38e0abbfbab858dde [2019-10-22 11:21:05,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:05,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:05,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:05,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:05,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:05,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1ea15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05, skipping insertion in model container [2019-10-22 11:21:05,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,336 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:05,375 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:05,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:05,775 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:05,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:05,867 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:05,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05 WrapperNode [2019-10-22 11:21:05,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:05,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:05,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:05,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:05,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:05,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:05,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:05,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:05,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... [2019-10-22 11:21:05,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:05,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:05,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:05,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:05,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:21:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:06,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:06,735 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:06,736 INFO L284 CfgBuilder]: Removed 116 assume(true) statements. [2019-10-22 11:21:06,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:06 BoogieIcfgContainer [2019-10-22 11:21:06,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:06,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:06,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:06,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:06,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:05" (1/3) ... [2019-10-22 11:21:06,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674c7da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:06, skipping insertion in model container [2019-10-22 11:21:06,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:05" (2/3) ... [2019-10-22 11:21:06,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674c7da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:06, skipping insertion in model container [2019-10-22 11:21:06,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:06" (3/3) ... [2019-10-22 11:21:06,746 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2019-10-22 11:21:06,756 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:06,765 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:21:06,776 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:21:06,799 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:06,799 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:06,799 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:06,799 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:06,800 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:06,800 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:06,800 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:06,800 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-10-22 11:21:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:21:06,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:06,821 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:06,822 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2019-10-22 11:21:06,835 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:06,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687309297] [2019-10-22 11:21:06,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:06,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:06,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687309297] [2019-10-22 11:21:07,002 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,003 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:07,003 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667613194] [2019-10-22 11:21:07,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:07,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:07,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:07,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:07,023 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 2 states. [2019-10-22 11:21:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,050 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2019-10-22 11:21:07,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:07,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:21:07,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,066 INFO L225 Difference]: With dead ends: 168 [2019-10-22 11:21:07,066 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 11:21:07,069 INFO L600 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 [2019-10-22 11:21:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 11:21:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-22 11:21:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 11:21:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2019-10-22 11:21:07,110 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2019-10-22 11:21:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,111 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2019-10-22 11:21:07,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2019-10-22 11:21:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:21:07,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,112 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:07,112 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2019-10-22 11:21:07,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925906341] [2019-10-22 11:21:07,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925906341] [2019-10-22 11:21:07,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:07,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793258400] [2019-10-22 11:21:07,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:07,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:07,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:07,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:07,238 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 3 states. [2019-10-22 11:21:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,248 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2019-10-22 11:21:07,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:07,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:21:07,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,250 INFO L225 Difference]: With dead ends: 83 [2019-10-22 11:21:07,250 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 11:21:07,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 11:21:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 11:21:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 11:21:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2019-10-22 11:21:07,256 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2019-10-22 11:21:07,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,257 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2019-10-22 11:21:07,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2019-10-22 11:21:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:21:07,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,257 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:07,258 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,258 INFO L82 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2019-10-22 11:21:07,258 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532819671] [2019-10-22 11:21:07,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532819671] [2019-10-22 11:21:07,319 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:07,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497632508] [2019-10-22 11:21:07,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:07,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:07,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:07,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:07,320 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand 3 states. [2019-10-22 11:21:07,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,354 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2019-10-22 11:21:07,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:07,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:21:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,355 INFO L225 Difference]: With dead ends: 68 [2019-10-22 11:21:07,356 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 11:21:07,356 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 11:21:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 11:21:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 11:21:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-10-22 11:21:07,361 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2019-10-22 11:21:07,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,362 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-10-22 11:21:07,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:07,362 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2019-10-22 11:21:07,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:21:07,363 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,363 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:07,363 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,363 INFO L82 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2019-10-22 11:21:07,364 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407724839] [2019-10-22 11:21:07,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407724839] [2019-10-22 11:21:07,420 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:07,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132591362] [2019-10-22 11:21:07,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:07,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:07,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:07,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:07,421 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-10-22 11:21:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,465 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2019-10-22 11:21:07,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:07,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 11:21:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,467 INFO L225 Difference]: With dead ends: 89 [2019-10-22 11:21:07,467 INFO L226 Difference]: Without dead ends: 58 [2019-10-22 11:21:07,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-22 11:21:07,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2019-10-22 11:21:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 11:21:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2019-10-22 11:21:07,482 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2019-10-22 11:21:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,483 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2019-10-22 11:21:07,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2019-10-22 11:21:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:21:07,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,484 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:07,484 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2019-10-22 11:21:07,485 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204704368] [2019-10-22 11:21:07,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204704368] [2019-10-22 11:21:07,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:21:07,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489375149] [2019-10-22 11:21:07,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:21:07,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:07,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:21:07,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:07,569 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 7 states. [2019-10-22 11:21:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,839 INFO L93 Difference]: Finished difference Result 347 states and 506 transitions. [2019-10-22 11:21:07,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 11:21:07,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-10-22 11:21:07,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,844 INFO L225 Difference]: With dead ends: 347 [2019-10-22 11:21:07,844 INFO L226 Difference]: Without dead ends: 297 [2019-10-22 11:21:07,845 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:21:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-10-22 11:21:07,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2019-10-22 11:21:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-22 11:21:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2019-10-22 11:21:07,886 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 29 [2019-10-22 11:21:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,887 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2019-10-22 11:21:07,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:21:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2019-10-22 11:21:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 11:21:07,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,891 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:07,891 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1559974996, now seen corresponding path program 1 times [2019-10-22 11:21:07,892 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132481416] [2019-10-22 11:21:07,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:21:07,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132481416] [2019-10-22 11:21:07,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:21:07,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993799123] [2019-10-22 11:21:07,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:07,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:07,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:07,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:07,975 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand 5 states. [2019-10-22 11:21:08,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:08,024 INFO L93 Difference]: Finished difference Result 388 states and 531 transitions. [2019-10-22 11:21:08,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:08,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-10-22 11:21:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:08,026 INFO L225 Difference]: With dead ends: 388 [2019-10-22 11:21:08,026 INFO L226 Difference]: Without dead ends: 254 [2019-10-22 11:21:08,027 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-10-22 11:21:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 149. [2019-10-22 11:21:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-22 11:21:08,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2019-10-22 11:21:08,042 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 47 [2019-10-22 11:21:08,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:08,042 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2019-10-22 11:21:08,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2019-10-22 11:21:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 11:21:08,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:08,044 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:08,044 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:08,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2069448086, now seen corresponding path program 1 times [2019-10-22 11:21:08,045 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:08,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100781568] [2019-10-22 11:21:08,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:08,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:08,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:21:08,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100781568] [2019-10-22 11:21:08,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:08,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:21:08,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251365053] [2019-10-22 11:21:08,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:08,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:08,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:08,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:08,124 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand 4 states. [2019-10-22 11:21:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:08,168 INFO L93 Difference]: Finished difference Result 311 states and 422 transitions. [2019-10-22 11:21:08,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:21:08,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-22 11:21:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:08,171 INFO L225 Difference]: With dead ends: 311 [2019-10-22 11:21:08,171 INFO L226 Difference]: Without dead ends: 168 [2019-10-22 11:21:08,171 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-22 11:21:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 123. [2019-10-22 11:21:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-22 11:21:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2019-10-22 11:21:08,193 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 47 [2019-10-22 11:21:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:08,194 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2019-10-22 11:21:08,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2019-10-22 11:21:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:21:08,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:08,198 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:08,198 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1874975382, now seen corresponding path program 1 times [2019-10-22 11:21:08,199 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:08,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076271526] [2019-10-22 11:21:08,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:08,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:08,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076271526] [2019-10-22 11:21:08,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79448720] [2019-10-22 11:21:08,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:08,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:21:08,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,475 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [936188064] [2019-10-22 11:21:08,519 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 49 [2019-10-22 11:21:08,560 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:21:08,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:21:09,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:09,068 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:21:09,073 INFO L168 Benchmark]: Toolchain (without parser) took 3753.57 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 252.2 MB). Free memory was 948.5 MB in the beginning and 1.2 GB in the end (delta: -281.0 MB). Peak memory consumption was 287.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:09,074 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:09,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.1 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -220.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:09,077 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:09,078 INFO L168 Benchmark]: Boogie Preprocessor took 30.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:09,078 INFO L168 Benchmark]: RCFGBuilder took 782.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:09,079 INFO L168 Benchmark]: TraceAbstraction took 2333.73 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -134.7 MB). Peak memory consumption was 248.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:09,081 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 547.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.1 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -220.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 782.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2333.73 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -134.7 MB). Peak memory consumption was 248.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:11,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:11,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:11,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:11,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:11,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:11,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:11,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:11,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:11,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:11,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:11,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:11,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:11,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:11,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:11,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:11,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:11,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:11,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:11,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:11,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:11,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:11,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:11,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:11,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:11,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:11,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:11,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:11,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:11,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:11,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:11,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:11,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:11,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:11,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:11,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:11,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:11,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:11,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:11,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:11,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:11,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:11,201 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:11,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:11,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:11,202 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:11,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:11,202 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:11,202 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:11,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:11,203 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:11,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:11,203 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:11,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:11,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:11,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:11,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:11,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:11,204 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:11,204 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:11,204 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:11,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:11,205 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:11,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:11,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:11,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:11,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:11,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:11,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:11,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:11,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:11,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:11,207 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:11,207 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:11,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:11,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:11,208 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0851c41d1dd56ed840a839dd5bb938ccfe6bf65 [2019-10-22 11:21:11,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:11,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:11,250 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:11,252 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:11,252 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:11,252 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2019-10-22 11:21:11,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data/64144f099/e4c59ee785754a9ab1b8eb331a2b8b33/FLAGab79a92e8 [2019-10-22 11:21:11,726 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:11,727 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2019-10-22 11:21:11,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data/64144f099/e4c59ee785754a9ab1b8eb331a2b8b33/FLAGab79a92e8 [2019-10-22 11:21:11,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/data/64144f099/e4c59ee785754a9ab1b8eb331a2b8b33 [2019-10-22 11:21:11,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:11,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:11,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:11,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:11,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:11,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fff581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:11, skipping insertion in model container [2019-10-22 11:21:11,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:11" (1/1) ... [2019-10-22 11:21:11,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:11,827 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:12,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:12,229 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:12,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:12,350 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:12,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12 WrapperNode [2019-10-22 11:21:12,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:12,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:12,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:12,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:12,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:12,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:12,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:12,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:12,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... [2019-10-22 11:21:12,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:12,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:12,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:12,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:12,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:12,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:12,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:21:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:12,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:13,331 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:13,332 INFO L284 CfgBuilder]: Removed 116 assume(true) statements. [2019-10-22 11:21:13,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:13 BoogieIcfgContainer [2019-10-22 11:21:13,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:13,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:13,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:13,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:11" (1/3) ... [2019-10-22 11:21:13,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3eba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:13, skipping insertion in model container [2019-10-22 11:21:13,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:12" (2/3) ... [2019-10-22 11:21:13,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3eba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:13, skipping insertion in model container [2019-10-22 11:21:13,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:13" (3/3) ... [2019-10-22 11:21:13,344 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2019-10-22 11:21:13,354 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:13,364 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:21:13,374 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:21:13,400 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:13,401 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:13,401 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:13,401 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:13,401 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:13,401 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:13,402 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:13,402 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-10-22 11:21:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:21:13,427 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:13,428 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:13,430 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:13,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:13,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2019-10-22 11:21:13,448 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:13,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1197549803] [2019-10-22 11:21:13,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:13,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:21:13,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:13,666 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:13,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1197549803] [2019-10-22 11:21:13,672 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:13,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:21:13,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123016015] [2019-10-22 11:21:13,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:13,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:13,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:13,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:13,692 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 2 states. [2019-10-22 11:21:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:13,718 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2019-10-22 11:21:13,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:13,720 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:21:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:13,733 INFO L225 Difference]: With dead ends: 168 [2019-10-22 11:21:13,735 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 11:21:13,739 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:13,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 11:21:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-22 11:21:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 11:21:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2019-10-22 11:21:13,789 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2019-10-22 11:21:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:13,791 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2019-10-22 11:21:13,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2019-10-22 11:21:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:21:13,793 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:13,793 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:13,994 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:13,994 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:13,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:13,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2019-10-22 11:21:13,996 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:13,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [367828955] [2019-10-22 11:21:13,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:14,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:14,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:14,173 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:14,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [367828955] [2019-10-22 11:21:14,183 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:14,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:21:14,183 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346306208] [2019-10-22 11:21:14,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:14,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:14,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:14,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:14,186 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 4 states. [2019-10-22 11:21:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:14,220 INFO L93 Difference]: Finished difference Result 160 states and 228 transitions. [2019-10-22 11:21:14,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:14,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:21:14,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:14,222 INFO L225 Difference]: With dead ends: 160 [2019-10-22 11:21:14,223 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 11:21:14,224 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 11:21:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-22 11:21:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 11:21:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2019-10-22 11:21:14,249 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 17 [2019-10-22 11:21:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:14,249 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2019-10-22 11:21:14,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2019-10-22 11:21:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:21:14,250 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:14,250 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:14,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:14,455 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:14,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash 913190727, now seen corresponding path program 1 times [2019-10-22 11:21:14,456 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:14,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1934480146] [2019-10-22 11:21:14,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:14,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:14,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:14,635 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:14,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1934480146] [2019-10-22 11:21:14,638 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:14,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:14,638 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053987530] [2019-10-22 11:21:14,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:14,639 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:14,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:14,640 INFO L87 Difference]: Start difference. First operand 83 states and 114 transitions. Second operand 3 states. [2019-10-22 11:21:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:14,799 INFO L93 Difference]: Finished difference Result 207 states and 285 transitions. [2019-10-22 11:21:14,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:14,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:21:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:14,801 INFO L225 Difference]: With dead ends: 207 [2019-10-22 11:21:14,801 INFO L226 Difference]: Without dead ends: 130 [2019-10-22 11:21:14,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-22 11:21:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2019-10-22 11:21:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-22 11:21:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 168 transitions. [2019-10-22 11:21:14,831 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 168 transitions. Word has length 18 [2019-10-22 11:21:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:14,832 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 168 transitions. [2019-10-22 11:21:14,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 168 transitions. [2019-10-22 11:21:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:21:14,834 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:14,834 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:15,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:15,035 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1846419003, now seen corresponding path program 1 times [2019-10-22 11:21:15,036 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:15,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1479670140] [2019-10-22 11:21:15,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:15,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:21:15,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:15,232 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:15,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1479670140] [2019-10-22 11:21:15,273 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:15,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:21:15,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267309090] [2019-10-22 11:21:15,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:21:15,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:15,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:21:15,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:15,276 INFO L87 Difference]: Start difference. First operand 124 states and 168 transitions. Second operand 8 states. [2019-10-22 11:21:15,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:15,796 INFO L93 Difference]: Finished difference Result 809 states and 1129 transitions. [2019-10-22 11:21:15,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:21:15,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 11:21:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:15,801 INFO L225 Difference]: With dead ends: 809 [2019-10-22 11:21:15,801 INFO L226 Difference]: Without dead ends: 691 [2019-10-22 11:21:15,803 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:21:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-22 11:21:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 316. [2019-10-22 11:21:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2019-10-22 11:21:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 417 transitions. [2019-10-22 11:21:15,873 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 417 transitions. Word has length 24 [2019-10-22 11:21:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:15,873 INFO L462 AbstractCegarLoop]: Abstraction has 316 states and 417 transitions. [2019-10-22 11:21:15,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:21:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 417 transitions. [2019-10-22 11:21:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:21:15,875 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:15,875 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:16,077 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:16,078 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:16,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1396016345, now seen corresponding path program 1 times [2019-10-22 11:21:16,079 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:16,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [687228434] [2019-10-22 11:21:16,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:16,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:21:16,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:16,300 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:16,306 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [687228434] [2019-10-22 11:21:16,306 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:16,306 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:21:16,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948174185] [2019-10-22 11:21:16,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:16,307 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:16,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:16,308 INFO L87 Difference]: Start difference. First operand 316 states and 417 transitions. Second operand 5 states. [2019-10-22 11:21:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:16,455 INFO L93 Difference]: Finished difference Result 876 states and 1131 transitions. [2019-10-22 11:21:16,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:16,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-22 11:21:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:16,459 INFO L225 Difference]: With dead ends: 876 [2019-10-22 11:21:16,459 INFO L226 Difference]: Without dead ends: 566 [2019-10-22 11:21:16,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2019-10-22 11:21:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 343. [2019-10-22 11:21:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-22 11:21:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 444 transitions. [2019-10-22 11:21:16,499 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 444 transitions. Word has length 38 [2019-10-22 11:21:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:16,499 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 444 transitions. [2019-10-22 11:21:16,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 444 transitions. [2019-10-22 11:21:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:21:16,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:16,501 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:16,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:16,702 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:16,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1530029851, now seen corresponding path program 1 times [2019-10-22 11:21:16,703 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:16,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [906974565] [2019-10-22 11:21:16,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:16,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:21:16,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:16,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:16,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [906974565] [2019-10-22 11:21:16,920 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:16,920 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:21:16,920 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444083785] [2019-10-22 11:21:16,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:21:16,921 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:21:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:21:16,922 INFO L87 Difference]: Start difference. First operand 343 states and 444 transitions. Second operand 6 states. [2019-10-22 11:21:17,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:17,043 INFO L93 Difference]: Finished difference Result 743 states and 952 transitions. [2019-10-22 11:21:17,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:21:17,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-22 11:21:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:17,046 INFO L225 Difference]: With dead ends: 743 [2019-10-22 11:21:17,046 INFO L226 Difference]: Without dead ends: 372 [2019-10-22 11:21:17,047 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2019-10-22 11:21:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 251. [2019-10-22 11:21:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2019-10-22 11:21:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 324 transitions. [2019-10-22 11:21:17,074 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 324 transitions. Word has length 38 [2019-10-22 11:21:17,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:17,074 INFO L462 AbstractCegarLoop]: Abstraction has 251 states and 324 transitions. [2019-10-22 11:21:17,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:21:17,074 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 324 transitions. [2019-10-22 11:21:17,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:21:17,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:17,076 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:17,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:17,276 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:17,277 INFO L82 PathProgramCache]: Analyzing trace with hash 415697967, now seen corresponding path program 1 times [2019-10-22 11:21:17,277 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:17,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [302453188] [2019-10-22 11:21:17,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:17,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:17,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:17,465 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:17,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [302453188] [2019-10-22 11:21:17,476 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:17,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:17,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118868605] [2019-10-22 11:21:17,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:17,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:17,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:17,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:17,478 INFO L87 Difference]: Start difference. First operand 251 states and 324 transitions. Second operand 3 states. [2019-10-22 11:21:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:17,496 INFO L93 Difference]: Finished difference Result 251 states and 324 transitions. [2019-10-22 11:21:17,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:17,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-22 11:21:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:17,499 INFO L225 Difference]: With dead ends: 251 [2019-10-22 11:21:17,499 INFO L226 Difference]: Without dead ends: 123 [2019-10-22 11:21:17,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-22 11:21:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-10-22 11:21:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-22 11:21:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2019-10-22 11:21:17,512 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 43 [2019-10-22 11:21:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:17,513 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2019-10-22 11:21:17,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2019-10-22 11:21:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:21:17,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:17,517 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:17,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:17,718 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:17,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1874975382, now seen corresponding path program 1 times [2019-10-22 11:21:17,718 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:17,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [99417784] [2019-10-22 11:21:17,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:17,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:21:17,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:21:17,907 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:21:17,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [99417784] [2019-10-22 11:21:17,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780432868] [2019-10-22 11:21:17,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:18,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:21:18,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:21:18,081 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:21:18,088 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:21:18,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:21:18,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419547973] [2019-10-22 11:21:18,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:21:18,090 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:21:18,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:21:18,090 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand 10 states. [2019-10-22 11:21:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:18,746 INFO L93 Difference]: Finished difference Result 751 states and 1038 transitions. [2019-10-22 11:21:18,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:21:18,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2019-10-22 11:21:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:18,749 INFO L225 Difference]: With dead ends: 751 [2019-10-22 11:21:18,749 INFO L226 Difference]: Without dead ends: 657 [2019-10-22 11:21:18,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:21:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-22 11:21:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 223. [2019-10-22 11:21:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2019-10-22 11:21:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 304 transitions. [2019-10-22 11:21:18,775 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 304 transitions. Word has length 48 [2019-10-22 11:21:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:18,775 INFO L462 AbstractCegarLoop]: Abstraction has 223 states and 304 transitions. [2019-10-22 11:21:18,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:21:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 304 transitions. [2019-10-22 11:21:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 11:21:18,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:18,777 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:19,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:19,178 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1478909471, now seen corresponding path program 2 times [2019-10-22 11:21:19,178 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:19,179 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1328262123] [2019-10-22 11:21:19,179 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:21,154 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:21:21,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:21:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:23,448 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:21:23,449 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:23,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:23,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:23 BoogieIcfgContainer [2019-10-22 11:21:23,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:23,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:23,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:23,847 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:23,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:13" (3/4) ... [2019-10-22 11:21:23,850 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:21:23,995 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e5dfc459-822d-428b-9c9f-3ab998e45a82/bin/utaipan/witness.graphml [2019-10-22 11:21:23,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:23,997 INFO L168 Benchmark]: Toolchain (without parser) took 12233.69 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 284.2 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -286.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:23,997 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:23,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:23,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:23,998 INFO L168 Benchmark]: Boogie Preprocessor took 45.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:23,998 INFO L168 Benchmark]: RCFGBuilder took 845.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:23,998 INFO L168 Benchmark]: TraceAbstraction took 10511.97 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 116.4 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -192.4 MB). Peak memory consumption was 298.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:23,998 INFO L168 Benchmark]: Witness Printer took 148.45 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:24,000 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 587.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 845.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10511.97 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 116.4 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -192.4 MB). Peak memory consumption was 298.1 MB. Max. memory is 11.5 GB. * Witness Printer took 148.45 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 924]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L573] int cleanupTimeShifts = 4; [L742] int pumpRunning = 0; [L743] int systemActive = 1; [L649] int retValue_acc ; [L650] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L656] tmp = valid_product() [L658] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L674] int splverifierCounter ; [L675] int tmp ; [L676] int tmp___0 ; [L677] int tmp___1 ; [L678] int tmp___2 ; [L681] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L683] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L685] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L691] tmp = __VERIFIER_nondet_int() [L693] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L915] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L749] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] COND TRUE \read(systemActive) [L778] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L781] COND TRUE ! pumpRunning [L893] int retValue_acc ; [L894] int tmp ; [L895] int tmp___0 ; [L127] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] tmp = isHighWaterSensorDry() [L901] COND FALSE !(\read(tmp)) [L904] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L906] retValue_acc = tmp___0 [L907] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L783] tmp = isHighWaterLevel() [L785] COND TRUE \read(tmp) [L812] int tmp ; [L837] int retValue_acc ; [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L841] retValue_acc = isMethaneLevelCritical() [L843] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L816] tmp = isMethaneAlarm() [L818] COND FALSE !(\read(tmp)) [L806] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L548] int tmp ; [L549] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L683] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L685] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L915] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L749] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L756] COND TRUE \read(systemActive) [L778] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L781] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L548] int tmp ; [L549] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L683] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L685] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L915] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L749] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L756] COND TRUE \read(systemActive) [L778] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L781] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L548] int tmp ; [L549] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L553] tmp = getWaterLevel() [L555] COND TRUE tmp == 0 [L848] int retValue_acc ; [L851] retValue_acc = pumpRunning [L852] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L557] tmp___0 = isPumpRunning() [L559] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L924] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Result: UNSAFE, OverallTime: 10.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 983 SDtfs, 2533 SDslu, 2012 SDs, 0 SdLazy, 412 SolverSat, 159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 594 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1159 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 562 ConstructedInterpolants, 0 QuantifiedInterpolants, 53100 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1783 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 24/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...