./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.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_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 8094c843e4d897e4501a7b90ca3369f741555e9e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 8094c843e4d897e4501a7b90ca3369f741555e9e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:23:03,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:03,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:03,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:03,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:03,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:03,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:03,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:03,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:03,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:03,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:03,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:03,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:03,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:03,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:03,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:03,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:03,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:03,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:03,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:03,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:03,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:03,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:03,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:03,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:03,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:03,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:03,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:03,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:03,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:03,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:03,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:03,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:03,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:03,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:03,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:03,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:03,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:03,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:03,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:03,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:03,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:03,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:03,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:03,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:03,585 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:03,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:03,586 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:03,586 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:03,586 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:03,586 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:03,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:03,587 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:03,587 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:03,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:03,588 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:03,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:03,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:03,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:03,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:03,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:03,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:03,589 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:03,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:03,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:03,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:03,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:03,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:03,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:03,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:03,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:03,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:03,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:03,592 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:03,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:03,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:03,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:03,593 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_87fe6402-be44-41b4-bc6d-d3883779514f/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 -> 8094c843e4d897e4501a7b90ca3369f741555e9e [2019-10-22 11:23:03,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:03,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:03,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:03,643 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:03,644 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:03,644 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2019-10-22 11:23:03,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data/cae6f1f34/74039c0767a84b23b1e29aa2a33520b1/FLAG8eb8c3e6d [2019-10-22 11:23:04,119 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:04,119 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2019-10-22 11:23:04,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data/cae6f1f34/74039c0767a84b23b1e29aa2a33520b1/FLAG8eb8c3e6d [2019-10-22 11:23:04,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data/cae6f1f34/74039c0767a84b23b1e29aa2a33520b1 [2019-10-22 11:23:04,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:04,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:04,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:04,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:04,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:04,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:04" (1/1) ... [2019-10-22 11:23:04,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0c4673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:04, skipping insertion in model container [2019-10-22 11:23:04,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:04" (1/1) ... [2019-10-22 11:23:04,556 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:04,597 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:04,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:04,950 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:05,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:05,069 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:05,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05 WrapperNode [2019-10-22 11:23:05,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:05,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:05,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:05,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:05,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:05,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:05,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:05,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:05,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... [2019-10-22 11:23:05,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:05,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:05,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:05,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:05,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:23:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:06,027 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:06,027 INFO L284 CfgBuilder]: Removed 102 assume(true) statements. [2019-10-22 11:23:06,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:06 BoogieIcfgContainer [2019-10-22 11:23:06,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:06,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:06,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:06,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:06,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:04" (1/3) ... [2019-10-22 11:23:06,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d6815f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:06, skipping insertion in model container [2019-10-22 11:23:06,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:05" (2/3) ... [2019-10-22 11:23:06,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d6815f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:06, skipping insertion in model container [2019-10-22 11:23:06,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:06" (3/3) ... [2019-10-22 11:23:06,038 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2019-10-22 11:23:06,051 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:06,059 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:23:06,067 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:23:06,091 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:06,091 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:06,091 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:06,091 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:06,091 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:06,091 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:06,092 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:06,092 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-10-22 11:23:06,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:23:06,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:06,119 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:06,121 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:06,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash -502845476, now seen corresponding path program 1 times [2019-10-22 11:23:06,141 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:06,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534230461] [2019-10-22 11:23:06,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:06,389 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 11:23:06,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534230461] [2019-10-22 11:23:06,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:06,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:06,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93045180] [2019-10-22 11:23:06,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:23:06,396 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:06,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:23:06,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:06,412 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2019-10-22 11:23:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:06,434 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2019-10-22 11:23:06,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:23:06,435 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:23:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:06,444 INFO L225 Difference]: With dead ends: 154 [2019-10-22 11:23:06,445 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 11:23:06,447 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 11:23:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 11:23:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-10-22 11:23:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 11:23:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2019-10-22 11:23:06,485 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2019-10-22 11:23:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:06,485 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2019-10-22 11:23:06,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:23:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2019-10-22 11:23:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:23:06,486 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:06,487 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 11:23:06,487 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:06,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1549602373, now seen corresponding path program 1 times [2019-10-22 11:23:06,488 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:06,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810025632] [2019-10-22 11:23:06,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:06,576 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 11:23:06,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810025632] [2019-10-22 11:23:06,576 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:06,577 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:06,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951705176] [2019-10-22 11:23:06,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:06,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:06,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:06,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:06,579 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 3 states. [2019-10-22 11:23:06,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:06,593 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2019-10-22 11:23:06,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:06,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:23:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:06,594 INFO L225 Difference]: With dead ends: 76 [2019-10-22 11:23:06,594 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 11:23:06,595 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 11:23:06,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 11:23:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-22 11:23:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 11:23:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2019-10-22 11:23:06,601 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2019-10-22 11:23:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:06,601 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2019-10-22 11:23:06,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2019-10-22 11:23:06,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:23:06,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:06,602 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 11:23:06,603 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:06,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1499295122, now seen corresponding path program 1 times [2019-10-22 11:23:06,603 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:06,604 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397852657] [2019-10-22 11:23:06,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:06,716 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 11:23:06,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397852657] [2019-10-22 11:23:06,716 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:06,717 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:06,717 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214194928] [2019-10-22 11:23:06,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:06,718 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:06,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:06,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:06,718 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 3 states. [2019-10-22 11:23:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:06,752 INFO L93 Difference]: Finished difference Result 96 states and 141 transitions. [2019-10-22 11:23:06,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:06,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:23:06,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:06,754 INFO L225 Difference]: With dead ends: 96 [2019-10-22 11:23:06,754 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 11:23:06,754 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 11:23:06,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 11:23:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2019-10-22 11:23:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-22 11:23:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 91 transitions. [2019-10-22 11:23:06,764 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 91 transitions. Word has length 22 [2019-10-22 11:23:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:06,764 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 91 transitions. [2019-10-22 11:23:06,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 91 transitions. [2019-10-22 11:23:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:23:06,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:06,765 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 11:23:06,766 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:06,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1870150441, now seen corresponding path program 1 times [2019-10-22 11:23:06,766 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:06,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329507998] [2019-10-22 11:23:06,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:06,824 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 11:23:06,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329507998] [2019-10-22 11:23:06,824 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:06,825 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:06,825 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459855890] [2019-10-22 11:23:06,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:06,826 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:06,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:06,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:06,826 INFO L87 Difference]: Start difference. First operand 62 states and 91 transitions. Second operand 3 states. [2019-10-22 11:23:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:06,876 INFO L93 Difference]: Finished difference Result 159 states and 238 transitions. [2019-10-22 11:23:06,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:06,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 11:23:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:06,878 INFO L225 Difference]: With dead ends: 159 [2019-10-22 11:23:06,878 INFO L226 Difference]: Without dead ends: 103 [2019-10-22 11:23:06,878 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 11:23:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-10-22 11:23:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2019-10-22 11:23:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-10-22 11:23:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2019-10-22 11:23:06,894 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 23 [2019-10-22 11:23:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:06,894 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2019-10-22 11:23:06,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2019-10-22 11:23:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:23:06,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:06,895 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 11:23:06,895 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash 944519591, now seen corresponding path program 1 times [2019-10-22 11:23:06,896 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:06,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801949357] [2019-10-22 11:23:06,896 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:06,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:07,010 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 11:23:07,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801949357] [2019-10-22 11:23:07,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:07,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:07,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588913748] [2019-10-22 11:23:07,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:07,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:07,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:07,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:07,013 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand 5 states. [2019-10-22 11:23:07,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:07,154 INFO L93 Difference]: Finished difference Result 369 states and 545 transitions. [2019-10-22 11:23:07,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:07,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:23:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:07,161 INFO L225 Difference]: With dead ends: 369 [2019-10-22 11:23:07,161 INFO L226 Difference]: Without dead ends: 274 [2019-10-22 11:23:07,162 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:07,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-10-22 11:23:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 182. [2019-10-22 11:23:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-22 11:23:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 256 transitions. [2019-10-22 11:23:07,198 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 256 transitions. Word has length 25 [2019-10-22 11:23:07,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:07,198 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 256 transitions. [2019-10-22 11:23:07,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 256 transitions. [2019-10-22 11:23:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:23:07,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:07,204 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] [2019-10-22 11:23:07,204 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:07,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:07,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1014789399, now seen corresponding path program 1 times [2019-10-22 11:23:07,205 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:07,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362126168] [2019-10-22 11:23:07,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:07,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:07,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:07,306 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 11:23:07,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362126168] [2019-10-22 11:23:07,307 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:07,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:07,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874093410] [2019-10-22 11:23:07,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:07,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:07,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:07,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:07,309 INFO L87 Difference]: Start difference. First operand 182 states and 256 transitions. Second operand 5 states. [2019-10-22 11:23:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:07,515 INFO L93 Difference]: Finished difference Result 368 states and 530 transitions. [2019-10-22 11:23:07,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:23:07,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-10-22 11:23:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:07,520 INFO L225 Difference]: With dead ends: 368 [2019-10-22 11:23:07,520 INFO L226 Difference]: Without dead ends: 366 [2019-10-22 11:23:07,520 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 11:23:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-10-22 11:23:07,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 182. [2019-10-22 11:23:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-22 11:23:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2019-10-22 11:23:07,550 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 254 transitions. Word has length 26 [2019-10-22 11:23:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:07,550 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 254 transitions. [2019-10-22 11:23:07,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 254 transitions. [2019-10-22 11:23:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:23:07,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:07,552 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] [2019-10-22 11:23:07,552 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1944189962, now seen corresponding path program 1 times [2019-10-22 11:23:07,553 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:07,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247535077] [2019-10-22 11:23:07,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:07,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:07,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:07,608 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 11:23:07,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247535077] [2019-10-22 11:23:07,609 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:07,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:07,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617564286] [2019-10-22 11:23:07,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:07,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:07,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:07,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:07,611 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. Second operand 5 states. [2019-10-22 11:23:07,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:07,670 INFO L93 Difference]: Finished difference Result 505 states and 702 transitions. [2019-10-22 11:23:07,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:07,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:23:07,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:07,673 INFO L225 Difference]: With dead ends: 505 [2019-10-22 11:23:07,673 INFO L226 Difference]: Without dead ends: 329 [2019-10-22 11:23:07,674 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 11:23:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2019-10-22 11:23:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 194. [2019-10-22 11:23:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2019-10-22 11:23:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 266 transitions. [2019-10-22 11:23:07,698 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 266 transitions. Word has length 30 [2019-10-22 11:23:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:07,698 INFO L462 AbstractCegarLoop]: Abstraction has 194 states and 266 transitions. [2019-10-22 11:23:07,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 266 transitions. [2019-10-22 11:23:07,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:23:07,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:07,706 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] [2019-10-22 11:23:07,706 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:07,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1551162952, now seen corresponding path program 1 times [2019-10-22 11:23:07,707 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:07,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789270553] [2019-10-22 11:23:07,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:07,708 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:07,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:07,765 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 11:23:07,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789270553] [2019-10-22 11:23:07,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:07,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:07,766 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018262218] [2019-10-22 11:23:07,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:07,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:07,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:07,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:07,767 INFO L87 Difference]: Start difference. First operand 194 states and 266 transitions. Second operand 5 states. [2019-10-22 11:23:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:07,874 INFO L93 Difference]: Finished difference Result 479 states and 651 transitions. [2019-10-22 11:23:07,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:23:07,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:23:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:07,877 INFO L225 Difference]: With dead ends: 479 [2019-10-22 11:23:07,877 INFO L226 Difference]: Without dead ends: 291 [2019-10-22 11:23:07,878 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 11:23:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-10-22 11:23:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 159. [2019-10-22 11:23:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-22 11:23:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 214 transitions. [2019-10-22 11:23:07,893 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 214 transitions. Word has length 30 [2019-10-22 11:23:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:07,893 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 214 transitions. [2019-10-22 11:23:07,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 214 transitions. [2019-10-22 11:23:07,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:23:07,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:07,894 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] [2019-10-22 11:23:07,895 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:07,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:07,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1809328390, now seen corresponding path program 1 times [2019-10-22 11:23:07,896 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:07,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916866437] [2019-10-22 11:23:07,896 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:07,896 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:07,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:07,940 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 11:23:07,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916866437] [2019-10-22 11:23:07,941 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:07,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:07,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315523100] [2019-10-22 11:23:07,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:07,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:07,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:07,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:07,943 INFO L87 Difference]: Start difference. First operand 159 states and 214 transitions. Second operand 5 states. [2019-10-22 11:23:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:08,068 INFO L93 Difference]: Finished difference Result 420 states and 588 transitions. [2019-10-22 11:23:08,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:08,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:23:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:08,071 INFO L225 Difference]: With dead ends: 420 [2019-10-22 11:23:08,071 INFO L226 Difference]: Without dead ends: 315 [2019-10-22 11:23:08,072 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-10-22 11:23:08,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 236. [2019-10-22 11:23:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-10-22 11:23:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 315 transitions. [2019-10-22 11:23:08,096 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 315 transitions. Word has length 30 [2019-10-22 11:23:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:08,096 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 315 transitions. [2019-10-22 11:23:08,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 315 transitions. [2019-10-22 11:23:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:23:08,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:08,098 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] [2019-10-22 11:23:08,098 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:08,098 INFO L82 PathProgramCache]: Analyzing trace with hash 61594744, now seen corresponding path program 1 times [2019-10-22 11:23:08,099 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:08,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013111267] [2019-10-22 11:23:08,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:08,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:08,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:08,169 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 11:23:08,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013111267] [2019-10-22 11:23:08,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914920422] [2019-10-22 11:23:08,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:08,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:23:08,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:08,350 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 11:23:08,350 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:08,379 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 11:23:08,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1854151868] [2019-10-22 11:23:08,386 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 46 [2019-10-22 11:23:08,437 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:23:08,438 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:23:08,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:08,850 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 11:23:08,858 INFO L168 Benchmark]: Toolchain (without parser) took 4314.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -194.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:08,858 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:08,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:08,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.08 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 11:23:08,859 INFO L168 Benchmark]: Boogie Preprocessor took 58.40 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 11:23:08,860 INFO L168 Benchmark]: RCFGBuilder took 824.72 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: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:08,860 INFO L168 Benchmark]: TraceAbstraction took 2823.49 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -97.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:08,862 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 529.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.08 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 58.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 824.72 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: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2823.49 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -97.4 MB). There was no memory consumed. 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 11:23:11,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:11,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:11,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:11,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:11,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:11,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:11,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:11,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:11,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:11,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:11,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:11,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:11,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:11,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:11,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:11,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:11,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:11,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:11,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:11,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:11,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:11,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:11,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:11,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:11,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:11,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:11,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:11,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:11,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:11,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:11,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:11,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:11,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:11,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:11,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:11,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:11,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:11,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:11,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:11,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:11,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:23:11,073 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:11,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:11,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:11,076 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:11,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:11,076 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:11,077 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:11,077 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:11,077 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:11,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:11,078 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:11,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:11,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:11,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:11,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:11,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:11,078 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:23:11,079 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:23:11,079 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:11,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:11,080 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:23:11,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:11,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:11,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:11,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:11,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:11,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:11,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:11,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:11,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:11,081 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:23:11,081 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:23:11,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:11,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:11,082 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_87fe6402-be44-41b4-bc6d-d3883779514f/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 -> 8094c843e4d897e4501a7b90ca3369f741555e9e [2019-10-22 11:23:11,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:11,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:11,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:11,139 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:11,139 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:11,140 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2019-10-22 11:23:11,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data/0d253c7b6/c9a2e47f99a44b1387772276e0c7d678/FLAGcca91c797 [2019-10-22 11:23:11,631 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:11,631 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2019-10-22 11:23:11,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data/0d253c7b6/c9a2e47f99a44b1387772276e0c7d678/FLAGcca91c797 [2019-10-22 11:23:11,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/data/0d253c7b6/c9a2e47f99a44b1387772276e0c7d678 [2019-10-22 11:23:11,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:11,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:11,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:11,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:11,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:11,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:11" (1/1) ... [2019-10-22 11:23:11,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b447d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:11, skipping insertion in model container [2019-10-22 11:23:11,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:11" (1/1) ... [2019-10-22 11:23:11,684 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:11,726 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:12,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:12,170 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:12,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:12,325 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:12,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12 WrapperNode [2019-10-22 11:23:12,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:12,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:12,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:12,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:12,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:12,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:12,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:12,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:12,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... [2019-10-22 11:23:12,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:12,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:12,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:12,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:12,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:23:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:12,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:13,237 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:13,238 INFO L284 CfgBuilder]: Removed 102 assume(true) statements. [2019-10-22 11:23:13,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:13 BoogieIcfgContainer [2019-10-22 11:23:13,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:13,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:13,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:13,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:13,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:11" (1/3) ... [2019-10-22 11:23:13,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642a85eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:13, skipping insertion in model container [2019-10-22 11:23:13,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:12" (2/3) ... [2019-10-22 11:23:13,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642a85eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:13, skipping insertion in model container [2019-10-22 11:23:13,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:13" (3/3) ... [2019-10-22 11:23:13,246 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2019-10-22 11:23:13,256 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:13,265 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:23:13,276 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:23:13,303 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:13,304 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:13,304 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:13,304 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:13,304 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:13,304 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:13,304 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:13,305 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:13,320 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-10-22 11:23:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:23:13,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:13,330 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:13,332 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:13,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:13,337 INFO L82 PathProgramCache]: Analyzing trace with hash -502845476, now seen corresponding path program 1 times [2019-10-22 11:23:13,348 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:13,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [575578924] [2019-10-22 11:23:13,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:13,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:23:13,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:13,565 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 11:23:13,565 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:13,569 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 11:23:13,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [575578924] [2019-10-22 11:23:13,571 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:13,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:23:13,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623413834] [2019-10-22 11:23:13,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:23:13,576 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:13,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:23:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:13,587 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2019-10-22 11:23:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:13,613 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2019-10-22 11:23:13,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:23:13,614 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:23:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:13,626 INFO L225 Difference]: With dead ends: 154 [2019-10-22 11:23:13,628 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 11:23:13,634 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 11:23:13,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 11:23:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-10-22 11:23:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 11:23:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2019-10-22 11:23:13,668 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2019-10-22 11:23:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:13,668 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2019-10-22 11:23:13,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:23:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2019-10-22 11:23:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:23:13,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:13,670 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 11:23:13,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:13,871 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:13,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1549602373, now seen corresponding path program 1 times [2019-10-22 11:23:13,872 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:13,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [565646580] [2019-10-22 11:23:13,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:14,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:23:14,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:14,046 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 11:23:14,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:14,054 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 11:23:14,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [565646580] [2019-10-22 11:23:14,055 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:14,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:23:14,055 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687562124] [2019-10-22 11:23:14,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:14,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:14,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:14,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:14,058 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 4 states. [2019-10-22 11:23:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:14,156 INFO L93 Difference]: Finished difference Result 265 states and 381 transitions. [2019-10-22 11:23:14,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:14,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:23:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:14,160 INFO L225 Difference]: With dead ends: 265 [2019-10-22 11:23:14,161 INFO L226 Difference]: Without dead ends: 195 [2019-10-22 11:23:14,162 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 11:23:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-10-22 11:23:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 117. [2019-10-22 11:23:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-22 11:23:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 168 transitions. [2019-10-22 11:23:14,191 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 168 transitions. Word has length 17 [2019-10-22 11:23:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:14,191 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 168 transitions. [2019-10-22 11:23:14,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 168 transitions. [2019-10-22 11:23:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:23:14,192 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:14,192 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 11:23:14,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:14,396 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:14,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:14,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1896692196, now seen corresponding path program 1 times [2019-10-22 11:23:14,397 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:14,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2120479573] [2019-10-22 11:23:14,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:14,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:23:14,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:14,553 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 11:23:14,553 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:14,555 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 11:23:14,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2120479573] [2019-10-22 11:23:14,556 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:14,556 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:23:14,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696240735] [2019-10-22 11:23:14,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:14,557 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:14,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:14,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:14,557 INFO L87 Difference]: Start difference. First operand 117 states and 168 transitions. Second operand 3 states. [2019-10-22 11:23:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:14,657 INFO L93 Difference]: Finished difference Result 273 states and 389 transitions. [2019-10-22 11:23:14,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:14,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:23:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:14,659 INFO L225 Difference]: With dead ends: 273 [2019-10-22 11:23:14,659 INFO L226 Difference]: Without dead ends: 162 [2019-10-22 11:23:14,660 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 11:23:14,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-10-22 11:23:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2019-10-22 11:23:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-10-22 11:23:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 214 transitions. [2019-10-22 11:23:14,676 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 214 transitions. Word has length 18 [2019-10-22 11:23:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:14,677 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 214 transitions. [2019-10-22 11:23:14,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 214 transitions. [2019-10-22 11:23:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:23:14,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:14,678 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 11:23:14,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:14,879 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:14,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:14,880 INFO L82 PathProgramCache]: Analyzing trace with hash -686349683, now seen corresponding path program 1 times [2019-10-22 11:23:14,880 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:14,880 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1635267122] [2019-10-22 11:23:14,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:15,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:23:15,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:15,041 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 11:23:15,041 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:15,050 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 11:23:15,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1635267122] [2019-10-22 11:23:15,051 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:15,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:23:15,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140346406] [2019-10-22 11:23:15,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:15,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:15,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:15,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:15,053 INFO L87 Difference]: Start difference. First operand 156 states and 214 transitions. Second operand 5 states. [2019-10-22 11:23:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:15,174 INFO L93 Difference]: Finished difference Result 465 states and 630 transitions. [2019-10-22 11:23:15,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:15,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-22 11:23:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:15,177 INFO L225 Difference]: With dead ends: 465 [2019-10-22 11:23:15,179 INFO L226 Difference]: Without dead ends: 315 [2019-10-22 11:23:15,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 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 11:23:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-10-22 11:23:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 165. [2019-10-22 11:23:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-10-22 11:23:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 223 transitions. [2019-10-22 11:23:15,217 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 223 transitions. Word has length 24 [2019-10-22 11:23:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:15,218 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 223 transitions. [2019-10-22 11:23:15,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 223 transitions. [2019-10-22 11:23:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:23:15,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:15,222 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 11:23:15,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:15,423 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:15,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1976161360, now seen corresponding path program 1 times [2019-10-22 11:23:15,424 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:15,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2044070649] [2019-10-22 11:23:15,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:15,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:23:15,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:15,590 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 11:23:15,590 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:15,617 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 11:23:15,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2044070649] [2019-10-22 11:23:15,617 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:15,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:23:15,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270911016] [2019-10-22 11:23:15,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:23:15,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:15,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:23:15,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:15,619 INFO L87 Difference]: Start difference. First operand 165 states and 223 transitions. Second operand 8 states. [2019-10-22 11:23:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:16,155 INFO L93 Difference]: Finished difference Result 1043 states and 1429 transitions. [2019-10-22 11:23:16,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:23:16,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 11:23:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:16,159 INFO L225 Difference]: With dead ends: 1043 [2019-10-22 11:23:16,159 INFO L226 Difference]: Without dead ends: 884 [2019-10-22 11:23:16,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:23:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2019-10-22 11:23:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 426. [2019-10-22 11:23:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-22 11:23:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 555 transitions. [2019-10-22 11:23:16,218 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 555 transitions. Word has length 24 [2019-10-22 11:23:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:16,219 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 555 transitions. [2019-10-22 11:23:16,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:23:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 555 transitions. [2019-10-22 11:23:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:23:16,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:16,223 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] [2019-10-22 11:23:16,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:16,424 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:16,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1635195794, now seen corresponding path program 1 times [2019-10-22 11:23:16,425 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:16,425 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [771962126] [2019-10-22 11:23:16,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:16,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:23:16,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:16,567 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 11:23:16,567 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:16,588 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 11:23:16,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [771962126] [2019-10-22 11:23:16,589 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:16,589 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:23:16,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570431690] [2019-10-22 11:23:16,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:16,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:16,590 INFO L87 Difference]: Start difference. First operand 426 states and 555 transitions. Second operand 6 states. [2019-10-22 11:23:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:16,715 INFO L93 Difference]: Finished difference Result 1115 states and 1441 transitions. [2019-10-22 11:23:16,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:16,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-22 11:23:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:16,718 INFO L225 Difference]: With dead ends: 1115 [2019-10-22 11:23:16,719 INFO L226 Difference]: Without dead ends: 628 [2019-10-22 11:23:16,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 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 11:23:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-22 11:23:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 335. [2019-10-22 11:23:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-10-22 11:23:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 438 transitions. [2019-10-22 11:23:16,766 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 438 transitions. Word has length 35 [2019-10-22 11:23:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:16,767 INFO L462 AbstractCegarLoop]: Abstraction has 335 states and 438 transitions. [2019-10-22 11:23:16,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 438 transitions. [2019-10-22 11:23:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 11:23:16,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:16,771 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] [2019-10-22 11:23:16,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:16,972 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:16,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash -242450295, now seen corresponding path program 1 times [2019-10-22 11:23:16,973 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:16,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [408936445] [2019-10-22 11:23:16,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:17,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:23:17,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:17,126 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 11:23:17,127 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:17,130 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 11:23:17,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [408936445] [2019-10-22 11:23:17,130 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:17,131 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:23:17,131 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319491990] [2019-10-22 11:23:17,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:17,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:17,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:17,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:17,132 INFO L87 Difference]: Start difference. First operand 335 states and 438 transitions. Second operand 3 states. [2019-10-22 11:23:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:17,152 INFO L93 Difference]: Finished difference Result 335 states and 438 transitions. [2019-10-22 11:23:17,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:17,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-22 11:23:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:17,154 INFO L225 Difference]: With dead ends: 335 [2019-10-22 11:23:17,154 INFO L226 Difference]: Without dead ends: 177 [2019-10-22 11:23:17,155 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 11:23:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-10-22 11:23:17,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2019-10-22 11:23:17,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-10-22 11:23:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 240 transitions. [2019-10-22 11:23:17,172 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 240 transitions. Word has length 40 [2019-10-22 11:23:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:17,172 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 240 transitions. [2019-10-22 11:23:17,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 240 transitions. [2019-10-22 11:23:17,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 11:23:17,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:17,173 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-10-22 11:23:17,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:17,374 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:17,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1143002491, now seen corresponding path program 1 times [2019-10-22 11:23:17,375 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:17,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [749476154] [2019-10-22 11:23:17,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/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 11:23:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:17,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:23:17,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:23:17,521 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:23:17,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [749476154] [2019-10-22 11:23:17,525 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:17,525 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:23:17,525 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210092657] [2019-10-22 11:23:17,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:17,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:17,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:17,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:17,526 INFO L87 Difference]: Start difference. First operand 177 states and 240 transitions. Second operand 5 states. [2019-10-22 11:23:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:17,699 INFO L93 Difference]: Finished difference Result 431 states and 593 transitions. [2019-10-22 11:23:17,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:23:17,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-10-22 11:23:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:17,703 INFO L225 Difference]: With dead ends: 431 [2019-10-22 11:23:17,703 INFO L226 Difference]: Without dead ends: 429 [2019-10-22 11:23:17,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 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 11:23:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-10-22 11:23:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 177. [2019-10-22 11:23:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-10-22 11:23:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 238 transitions. [2019-10-22 11:23:17,726 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 238 transitions. Word has length 41 [2019-10-22 11:23:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:17,727 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 238 transitions. [2019-10-22 11:23:17,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:17,727 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 238 transitions. [2019-10-22 11:23:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:23:17,728 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:17,728 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] [2019-10-22 11:23:17,929 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:17,930 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:17,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash 61594744, now seen corresponding path program 1 times [2019-10-22 11:23:17,931 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:17,931 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [907002571] [2019-10-22 11:23:17,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:18,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:23:18,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:18,111 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 11:23:18,111 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:18,149 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 11:23:18,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [907002571] [2019-10-22 11:23:18,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472756817] [2019-10-22 11:23:18,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:18,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:23:18,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:18,266 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 11:23:18,266 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:18,272 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 11:23:18,273 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:23:18,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:23:18,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870349146] [2019-10-22 11:23:18,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:23:18,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:18,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:23:18,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:23:18,274 INFO L87 Difference]: Start difference. First operand 177 states and 238 transitions. Second operand 10 states. [2019-10-22 11:23:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:19,061 INFO L93 Difference]: Finished difference Result 1044 states and 1457 transitions. [2019-10-22 11:23:19,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:23:19,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2019-10-22 11:23:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:19,065 INFO L225 Difference]: With dead ends: 1044 [2019-10-22 11:23:19,065 INFO L226 Difference]: Without dead ends: 914 [2019-10-22 11:23:19,066 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 168 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 11:23:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2019-10-22 11:23:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 294. [2019-10-22 11:23:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-22 11:23:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 402 transitions. [2019-10-22 11:23:19,099 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 402 transitions. Word has length 45 [2019-10-22 11:23:19,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:19,101 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 402 transitions. [2019-10-22 11:23:19,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:23:19,101 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 402 transitions. [2019-10-22 11:23:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-22 11:23:19,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:19,102 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] [2019-10-22 11:23:19,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:19,503 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:19,503 INFO L82 PathProgramCache]: Analyzing trace with hash -594503994, now seen corresponding path program 2 times [2019-10-22 11:23:19,504 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:19,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [449312469] [2019-10-22 11:23:19,504 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:21,511 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:23:21,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:23:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:23,888 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:23:23,888 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:23:24,089 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:24,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:24 BoogieIcfgContainer [2019-10-22 11:23:24,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:24,210 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:24,210 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:24,211 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:24,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:13" (3/4) ... [2019-10-22 11:23:24,214 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:23:24,350 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_87fe6402-be44-41b4-bc6d-d3883779514f/bin/utaipan/witness.graphml [2019-10-22 11:23:24,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:24,352 INFO L168 Benchmark]: Toolchain (without parser) took 12686.94 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 332.4 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -245.9 MB). Peak memory consumption was 86.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:24,353 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:24,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -209.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:24,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.67 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:24,353 INFO L168 Benchmark]: Boogie Preprocessor took 53.59 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 11:23:24,354 INFO L168 Benchmark]: RCFGBuilder took 782.52 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: 55.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:24,354 INFO L168 Benchmark]: TraceAbstraction took 10970.28 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 157.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -137.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:24,354 INFO L168 Benchmark]: Witness Printer took 139.94 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:24,355 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 661.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -209.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.67 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 782.52 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: 55.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10970.28 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 157.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -137.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 139.94 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 437]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L611] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L809] int waterLevel = 1; [L810] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L424] int retValue_acc ; [L427] retValue_acc = 1 [L428] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L827] COND TRUE waterLevel < 2 [L828] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L294] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L131] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND TRUE \read(systemActive) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND TRUE ! pumpRunning [L257] int retValue_acc ; [L258] int tmp ; [L259] int tmp___0 ; [L889] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L892] COND FALSE !(waterLevel < 2) [L896] retValue_acc = 0 [L897] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L263] tmp = isHighWaterSensorDry() [L265] COND FALSE !(\read(tmp)) [L268] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L270] retValue_acc = tmp___0 [L271] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L188] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L904] int tmp ; [L905] int tmp___0 ; [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L294] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L131] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L138] COND TRUE \read(systemActive) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L904] int tmp ; [L905] int tmp___0 ; [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L294] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L131] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L138] COND TRUE \read(systemActive) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L163] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L904] int tmp ; [L905] int tmp___0 ; [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L909] tmp = getWaterLevel() [L911] COND TRUE tmp == 0 [L212] int retValue_acc ; [L215] retValue_acc = pumpRunning [L216] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L913] tmp___0 = isPumpRunning() [L915] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L437] __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, 80 locations, 3 error locations. Result: UNSAFE, OverallTime: 10.9s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1055 SDtfs, 2563 SDslu, 2758 SDs, 0 SdLazy, 499 SolverSat, 161 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 629 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=426occurred 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, 9 MinimizatonAttempts, 1857 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 590 ConstructedInterpolants, 0 QuantifiedInterpolants, 49808 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1945 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 54/90 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...