./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product54.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_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/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 72d06b83689108b06d89f4f95641f29fdbb51231 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 11:26:22,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:22,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:22,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:22,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:22,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:22,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:22,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:22,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:22,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:22,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:22,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:22,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:22,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:22,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:22,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:22,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:22,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:22,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:22,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:22,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:22,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:22,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:22,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:22,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:22,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:22,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:22,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:22,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:22,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:22,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:22,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:22,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:22,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:22,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:22,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:22,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:22,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:22,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:22,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:22,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:22,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:22,685 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:22,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:22,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:22,686 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:22,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:22,686 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:22,687 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:22,687 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:22,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:22,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:22,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:22,687 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:22,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:22,688 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:22,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:22,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:22,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:22,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:22,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:22,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:22,689 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:22,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:22,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:22,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:22,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:22,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:22,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:22,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:22,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:22,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:22,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:22,691 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:22,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:22,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:22,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:22,692 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_66fe6483-49ad-429b-9975-87b94cadeff8/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 -> 72d06b83689108b06d89f4f95641f29fdbb51231 [2019-10-22 11:26:22,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:22,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:22,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:22,728 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:22,728 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:22,729 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2019-10-22 11:26:22,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/data/41acbf2e6/f52a75f7008c4040a1a50e267a2c39f8/FLAGea9b7e824 [2019-10-22 11:26:23,260 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:23,261 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2019-10-22 11:26:23,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/data/41acbf2e6/f52a75f7008c4040a1a50e267a2c39f8/FLAGea9b7e824 [2019-10-22 11:26:23,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/data/41acbf2e6/f52a75f7008c4040a1a50e267a2c39f8 [2019-10-22 11:26:23,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:23,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:23,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:23,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:23,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:23,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a484976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23, skipping insertion in model container [2019-10-22 11:26:23,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,582 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:23,633 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:23,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:23,998 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:24,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:24,128 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:24,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24 WrapperNode [2019-10-22 11:26:24,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:24,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:24,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:24,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:24,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:24,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:24,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:24,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:24,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:24,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:24,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:24,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:24,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/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 11:26:24,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:24,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:26:24,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:24,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:25,307 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:25,307 INFO L284 CfgBuilder]: Removed 278 assume(true) statements. [2019-10-22 11:26:25,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:25 BoogieIcfgContainer [2019-10-22 11:26:25,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:25,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:25,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:25,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:25,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:23" (1/3) ... [2019-10-22 11:26:25,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b548bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:25, skipping insertion in model container [2019-10-22 11:26:25,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (2/3) ... [2019-10-22 11:26:25,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b548bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:25, skipping insertion in model container [2019-10-22 11:26:25,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:25" (3/3) ... [2019-10-22 11:26:25,316 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2019-10-22 11:26:25,325 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:25,332 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:26:25,343 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:26:25,372 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:25,372 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:25,372 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:25,372 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:25,373 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:25,373 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:25,373 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:25,373 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-22 11:26:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:26:25,401 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:25,401 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:25,403 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:25,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:25,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1439730149, now seen corresponding path program 1 times [2019-10-22 11:26:25,417 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:25,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988892136] [2019-10-22 11:26:25,419 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:25,419 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:25,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:25,602 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 11:26:25,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988892136] [2019-10-22 11:26:25,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:25,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:25,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313920688] [2019-10-22 11:26:25,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:25,609 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:25,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:25,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:25,624 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-10-22 11:26:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:25,661 INFO L93 Difference]: Finished difference Result 372 states and 569 transitions. [2019-10-22 11:26:25,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:25,662 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:26:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:25,672 INFO L225 Difference]: With dead ends: 372 [2019-10-22 11:26:25,673 INFO L226 Difference]: Without dead ends: 185 [2019-10-22 11:26:25,676 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 11:26:25,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-10-22 11:26:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2019-10-22 11:26:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2019-10-22 11:26:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2019-10-22 11:26:25,719 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2019-10-22 11:26:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:25,719 INFO L462 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2019-10-22 11:26:25,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:25,719 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2019-10-22 11:26:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:26:25,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:25,720 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 11:26:25,721 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:25,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1808480250, now seen corresponding path program 1 times [2019-10-22 11:26:25,721 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:25,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850301922] [2019-10-22 11:26:25,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:25,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:25,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:25,834 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 11:26:25,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850301922] [2019-10-22 11:26:25,835 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:25,835 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:25,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088519673] [2019-10-22 11:26:25,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:25,837 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:25,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:25,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:25,838 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand 3 states. [2019-10-22 11:26:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:25,861 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2019-10-22 11:26:25,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:25,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:26:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:25,866 INFO L225 Difference]: With dead ends: 185 [2019-10-22 11:26:25,866 INFO L226 Difference]: Without dead ends: 71 [2019-10-22 11:26:25,867 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 11:26:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-10-22 11:26:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-10-22 11:26:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-10-22 11:26:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2019-10-22 11:26:25,874 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2019-10-22 11:26:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:25,874 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2019-10-22 11:26:25,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:25,874 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2019-10-22 11:26:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:26:25,876 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:25,876 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 11:26:25,876 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:25,876 INFO L82 PathProgramCache]: Analyzing trace with hash -886510538, now seen corresponding path program 1 times [2019-10-22 11:26:25,876 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:25,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987576648] [2019-10-22 11:26:25,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:25,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:25,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:26,007 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 11:26:26,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987576648] [2019-10-22 11:26:26,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:26,007 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:26,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185311213] [2019-10-22 11:26:26,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:26,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:26,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:26,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:26,009 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand 5 states. [2019-10-22 11:26:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:26,054 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2019-10-22 11:26:26,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:26,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 11:26:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:26,056 INFO L225 Difference]: With dead ends: 136 [2019-10-22 11:26:26,056 INFO L226 Difference]: Without dead ends: 71 [2019-10-22 11:26:26,056 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 11:26:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-10-22 11:26:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-10-22 11:26:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-10-22 11:26:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2019-10-22 11:26:26,062 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2019-10-22 11:26:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:26,063 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2019-10-22 11:26:26,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2019-10-22 11:26:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:26:26,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:26,064 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] [2019-10-22 11:26:26,064 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:26,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1823541737, now seen corresponding path program 1 times [2019-10-22 11:26:26,064 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:26,065 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571243991] [2019-10-22 11:26:26,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:26,154 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 11:26:26,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571243991] [2019-10-22 11:26:26,155 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:26,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:26,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101126678] [2019-10-22 11:26:26,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:26,156 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:26,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:26,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:26,156 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand 3 states. [2019-10-22 11:26:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:26,214 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2019-10-22 11:26:26,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:26,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-22 11:26:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:26,215 INFO L225 Difference]: With dead ends: 145 [2019-10-22 11:26:26,215 INFO L226 Difference]: Without dead ends: 80 [2019-10-22 11:26:26,216 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 11:26:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-22 11:26:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2019-10-22 11:26:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 11:26:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2019-10-22 11:26:26,224 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2019-10-22 11:26:26,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:26,225 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2019-10-22 11:26:26,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:26,225 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2019-10-22 11:26:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:26:26,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:26,226 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] [2019-10-22 11:26:26,227 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:26,227 INFO L82 PathProgramCache]: Analyzing trace with hash -920121944, now seen corresponding path program 1 times [2019-10-22 11:26:26,227 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:26,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695577541] [2019-10-22 11:26:26,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:26,283 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 11:26:26,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695577541] [2019-10-22 11:26:26,284 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:26,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:26,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5695902] [2019-10-22 11:26:26,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:26,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:26,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:26,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:26,285 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 5 states. [2019-10-22 11:26:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:26,367 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2019-10-22 11:26:26,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:26,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:26:26,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:26,369 INFO L225 Difference]: With dead ends: 204 [2019-10-22 11:26:26,369 INFO L226 Difference]: Without dead ends: 132 [2019-10-22 11:26:26,370 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 11:26:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-22 11:26:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2019-10-22 11:26:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-10-22 11:26:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2019-10-22 11:26:26,379 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2019-10-22 11:26:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:26,379 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2019-10-22 11:26:26,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2019-10-22 11:26:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:26:26,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:26,380 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] [2019-10-22 11:26:26,380 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:26,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1742389099, now seen corresponding path program 1 times [2019-10-22 11:26:26,381 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:26,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348178327] [2019-10-22 11:26:26,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:26,471 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 11:26:26,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348178327] [2019-10-22 11:26:26,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:26,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:26,472 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940003654] [2019-10-22 11:26:26,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:26,474 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:26,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:26,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:26,475 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 5 states. [2019-10-22 11:26:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:26,617 INFO L93 Difference]: Finished difference Result 250 states and 344 transitions. [2019-10-22 11:26:26,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:26:26,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:26:26,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:26,622 INFO L225 Difference]: With dead ends: 250 [2019-10-22 11:26:26,622 INFO L226 Difference]: Without dead ends: 248 [2019-10-22 11:26:26,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2019-10-22 11:26:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 87. [2019-10-22 11:26:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-10-22 11:26:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2019-10-22 11:26:26,644 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 31 [2019-10-22 11:26:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:26,645 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2019-10-22 11:26:26,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2019-10-22 11:26:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:26:26,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:26,650 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] [2019-10-22 11:26:26,651 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:26,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1313148954, now seen corresponding path program 1 times [2019-10-22 11:26:26,651 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:26,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523346085] [2019-10-22 11:26:26,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:26,705 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 11:26:26,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523346085] [2019-10-22 11:26:26,706 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:26,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:26,706 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113739384] [2019-10-22 11:26:26,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:26,707 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:26,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:26,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:26,707 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand 4 states. [2019-10-22 11:26:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:26,769 INFO L93 Difference]: Finished difference Result 204 states and 276 transitions. [2019-10-22 11:26:26,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:26,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-10-22 11:26:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:26,771 INFO L225 Difference]: With dead ends: 204 [2019-10-22 11:26:26,771 INFO L226 Difference]: Without dead ends: 123 [2019-10-22 11:26:26,771 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 11:26:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-22 11:26:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 93. [2019-10-22 11:26:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-10-22 11:26:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2019-10-22 11:26:26,785 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 31 [2019-10-22 11:26:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:26,785 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2019-10-22 11:26:26,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2019-10-22 11:26:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:26:26,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:26,808 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] [2019-10-22 11:26:26,808 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:26,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1054983516, now seen corresponding path program 1 times [2019-10-22 11:26:26,810 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:26,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562657742] [2019-10-22 11:26:26,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:26,857 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 11:26:26,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562657742] [2019-10-22 11:26:26,858 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:26,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:26,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361293818] [2019-10-22 11:26:26,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:26,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:26,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:26,859 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2019-10-22 11:26:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:26,884 INFO L93 Difference]: Finished difference Result 207 states and 277 transitions. [2019-10-22 11:26:26,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:26,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-10-22 11:26:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:26,885 INFO L225 Difference]: With dead ends: 207 [2019-10-22 11:26:26,885 INFO L226 Difference]: Without dead ends: 120 [2019-10-22 11:26:26,886 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 11:26:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-22 11:26:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-22 11:26:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:26:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2019-10-22 11:26:26,897 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 31 [2019-10-22 11:26:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:26,897 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2019-10-22 11:26:26,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2019-10-22 11:26:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 11:26:26,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:26,900 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] [2019-10-22 11:26:26,901 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1127223910, now seen corresponding path program 1 times [2019-10-22 11:26:26,901 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:26,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120721454] [2019-10-22 11:26:26,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:26,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:26,993 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 11:26:26,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120721454] [2019-10-22 11:26:26,993 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:26,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:26,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574086248] [2019-10-22 11:26:26,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:26,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:26,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:26,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:26,995 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 5 states. [2019-10-22 11:26:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:27,147 INFO L93 Difference]: Finished difference Result 615 states and 812 transitions. [2019-10-22 11:26:27,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:27,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-22 11:26:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:27,149 INFO L225 Difference]: With dead ends: 615 [2019-10-22 11:26:27,149 INFO L226 Difference]: Without dead ends: 501 [2019-10-22 11:26:27,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2019-10-22 11:26:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 226. [2019-10-22 11:26:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2019-10-22 11:26:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2019-10-22 11:26:27,181 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 32 [2019-10-22 11:26:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:27,181 INFO L462 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2019-10-22 11:26:27,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2019-10-22 11:26:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:27,182 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:27,182 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] [2019-10-22 11:26:27,183 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:27,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:27,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1518924332, now seen corresponding path program 1 times [2019-10-22 11:26:27,183 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:27,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544660835] [2019-10-22 11:26:27,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:27,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:27,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:27,757 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:26:27,757 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:27,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:27 BoogieIcfgContainer [2019-10-22 11:26:27,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:27,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:27,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:27,864 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:27,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:25" (3/4) ... [2019-10-22 11:26:27,866 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:27,963 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_66fe6483-49ad-429b-9975-87b94cadeff8/bin/utaipan/witness.graphml [2019-10-22 11:26:27,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:27,967 INFO L168 Benchmark]: Toolchain (without parser) took 4400.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 939.3 MB in the beginning and 890.8 MB in the end (delta: 48.5 MB). Peak memory consumption was 190.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:27,967 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:27,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:27,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.40 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:27,969 INFO L168 Benchmark]: Boogie Preprocessor took 63.35 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:27,969 INFO L168 Benchmark]: RCFGBuilder took 1018.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.5 MB). Peak memory consumption was 81.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:27,971 INFO L168 Benchmark]: TraceAbstraction took 2554.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 903.0 MB in the end (delta: 128.9 MB). Peak memory consumption was 128.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:27,971 INFO L168 Benchmark]: Witness Printer took 101.41 ms. Allocated memory is still 1.2 GB. Free memory was 903.0 MB in the beginning and 890.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:27,973 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 562.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.40 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 63.35 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1018.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.5 MB). Peak memory consumption was 81.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2554.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 903.0 MB in the end (delta: 128.9 MB). Peak memory consumption was 128.9 MB. Max. memory is 11.5 GB. * Witness Printer took 101.41 ms. Allocated memory is still 1.2 GB. Free memory was 903.0 MB in the beginning and 890.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) [L456] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L237] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND TRUE \read(systemActive) [L318] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L321] COND FALSE !(\read(pumpRunning)) [L292] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L295] COND FALSE !(\read(pumpRunning)) [L266] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND TRUE ! pumpRunning [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L969] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L346] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L497] int tmp ; [L498] int tmp___0 ; [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L216] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 189 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1137 SDtfs, 1314 SDslu, 1238 SDs, 0 SdLazy, 197 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 513 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 15647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...