./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.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_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 903a1f53bc072e1ab483040d7a35aae5e2bdf412 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 903a1f53bc072e1ab483040d7a35aae5e2bdf412 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:24:32,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:32,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:32,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:32,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:32,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:32,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:32,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:32,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:32,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:32,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:32,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:32,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:32,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:32,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:32,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:32,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:32,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:32,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:32,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:32,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:32,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:32,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:32,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:32,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:32,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:32,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:32,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:32,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:32,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:32,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:32,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:32,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:32,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:32,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:32,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:32,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:32,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:32,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:32,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:32,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:32,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:32,769 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:32,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:32,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:32,771 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:32,771 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:32,771 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:32,771 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:32,771 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:32,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:32,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:32,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:32,772 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:32,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:32,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:32,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:32,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:32,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:32,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:32,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:32,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:32,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:32,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:32,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:32,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:32,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:32,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:32,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:32,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:32,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:32,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:32,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:32,776 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:32,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:32,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:32,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:32,777 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_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 -> 903a1f53bc072e1ab483040d7a35aae5e2bdf412 [2019-10-22 11:24:32,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:32,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:32,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:32,832 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:32,833 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:32,833 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2019-10-22 11:24:32,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data/1231d3420/e1663cd2b98a4db2a55ba2164af83ffc/FLAGf5e574b93 [2019-10-22 11:24:33,308 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:33,309 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2019-10-22 11:24:33,321 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data/1231d3420/e1663cd2b98a4db2a55ba2164af83ffc/FLAGf5e574b93 [2019-10-22 11:24:33,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data/1231d3420/e1663cd2b98a4db2a55ba2164af83ffc [2019-10-22 11:24:33,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:33,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:33,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:33,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:33,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:33,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1ea15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33, skipping insertion in model container [2019-10-22 11:24:33,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,357 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:33,399 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:33,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:33,752 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:33,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:33,858 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:33,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33 WrapperNode [2019-10-22 11:24:33,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:33,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:33,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:33,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:33,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:33,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:33,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:33,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:33,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... [2019-10-22 11:24:33,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:34,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:34,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:34,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:34,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:24:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:34,914 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:34,914 INFO L284 CfgBuilder]: Removed 156 assume(true) statements. [2019-10-22 11:24:34,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:34 BoogieIcfgContainer [2019-10-22 11:24:34,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:34,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:34,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:34,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:34,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:33" (1/3) ... [2019-10-22 11:24:34,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af4c060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:34, skipping insertion in model container [2019-10-22 11:24:34,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:33" (2/3) ... [2019-10-22 11:24:34,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af4c060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:34, skipping insertion in model container [2019-10-22 11:24:34,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:34" (3/3) ... [2019-10-22 11:24:34,926 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2019-10-22 11:24:34,938 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:34,946 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:24:34,959 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:24:34,982 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:34,982 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:34,982 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:34,982 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:34,983 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:34,983 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:34,983 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:34,983 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2019-10-22 11:24:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:24:35,005 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:35,006 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:35,008 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:35,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2109695399, now seen corresponding path program 1 times [2019-10-22 11:24:35,022 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:35,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720905388] [2019-10-22 11:24:35,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:35,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720905388] [2019-10-22 11:24:35,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:35,233 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:35,233 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402734989] [2019-10-22 11:24:35,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:35,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:35,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:35,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:35,248 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 2 states. [2019-10-22 11:24:35,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:35,276 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2019-10-22 11:24:35,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:35,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:24:35,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:35,288 INFO L225 Difference]: With dead ends: 216 [2019-10-22 11:24:35,288 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:24:35,291 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 11:24:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:24:35,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-10-22 11:24:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:24:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2019-10-22 11:24:35,332 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2019-10-22 11:24:35,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:35,332 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2019-10-22 11:24:35,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2019-10-22 11:24:35,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:24:35,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:35,334 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 11:24:35,334 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:35,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:35,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1093063509, now seen corresponding path program 1 times [2019-10-22 11:24:35,334 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:35,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397749866] [2019-10-22 11:24:35,335 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,335 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:35,458 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 11:24:35,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397749866] [2019-10-22 11:24:35,459 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:35,459 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:35,459 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493334971] [2019-10-22 11:24:35,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:35,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:35,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:35,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:35,461 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2019-10-22 11:24:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:35,474 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2019-10-22 11:24:35,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:35,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:24:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:35,477 INFO L225 Difference]: With dead ends: 107 [2019-10-22 11:24:35,478 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:24:35,478 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 11:24:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:24:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-10-22 11:24:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 11:24:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2019-10-22 11:24:35,482 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2019-10-22 11:24:35,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:35,482 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2019-10-22 11:24:35,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2019-10-22 11:24:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:24:35,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:35,487 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 11:24:35,487 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:35,488 INFO L82 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2019-10-22 11:24:35,488 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:35,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897186999] [2019-10-22 11:24:35,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:35,582 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 11:24:35,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897186999] [2019-10-22 11:24:35,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:35,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:35,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983776428] [2019-10-22 11:24:35,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:35,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:35,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:35,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:35,584 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 3 states. [2019-10-22 11:24:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:35,592 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2019-10-22 11:24:35,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:35,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:24:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:35,593 INFO L225 Difference]: With dead ends: 84 [2019-10-22 11:24:35,593 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:24:35,594 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 11:24:35,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:24:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-10-22 11:24:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 11:24:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2019-10-22 11:24:35,599 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2019-10-22 11:24:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:35,599 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2019-10-22 11:24:35,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2019-10-22 11:24:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:24:35,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:35,600 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 11:24:35,600 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:35,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2019-10-22 11:24:35,601 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:35,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483489963] [2019-10-22 11:24:35,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:35,658 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 11:24:35,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483489963] [2019-10-22 11:24:35,658 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:35,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:35,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120345224] [2019-10-22 11:24:35,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:35,659 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:35,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:35,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:35,660 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2019-10-22 11:24:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:35,731 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2019-10-22 11:24:35,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:35,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:24:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:35,733 INFO L225 Difference]: With dead ends: 105 [2019-10-22 11:24:35,734 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 11:24:35,737 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 11:24:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 11:24:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2019-10-22 11:24:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 11:24:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2019-10-22 11:24:35,747 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2019-10-22 11:24:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:35,751 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2019-10-22 11:24:35,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2019-10-22 11:24:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:24:35,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:35,752 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 11:24:35,752 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:35,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:35,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2019-10-22 11:24:35,753 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:35,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376308708] [2019-10-22 11:24:35,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:35,842 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 11:24:35,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376308708] [2019-10-22 11:24:35,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:35,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:35,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716697835] [2019-10-22 11:24:35,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:35,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:35,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:35,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:35,844 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2019-10-22 11:24:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:35,934 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2019-10-22 11:24:35,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:35,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:24:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:35,936 INFO L225 Difference]: With dead ends: 171 [2019-10-22 11:24:35,936 INFO L226 Difference]: Without dead ends: 113 [2019-10-22 11:24:35,936 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 11:24:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-22 11:24:35,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2019-10-22 11:24:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-22 11:24:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2019-10-22 11:24:35,944 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2019-10-22 11:24:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:35,944 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2019-10-22 11:24:35,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2019-10-22 11:24:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:24:35,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:35,945 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 11:24:35,946 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:35,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2019-10-22 11:24:35,946 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:35,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260395686] [2019-10-22 11:24:35,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:36,017 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 11:24:36,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260395686] [2019-10-22 11:24:36,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:36,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:36,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414490295] [2019-10-22 11:24:36,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:36,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:36,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:36,020 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2019-10-22 11:24:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:36,126 INFO L93 Difference]: Finished difference Result 247 states and 346 transitions. [2019-10-22 11:24:36,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:36,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:24:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:36,130 INFO L225 Difference]: With dead ends: 247 [2019-10-22 11:24:36,130 INFO L226 Difference]: Without dead ends: 183 [2019-10-22 11:24:36,131 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 11:24:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-22 11:24:36,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2019-10-22 11:24:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-22 11:24:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2019-10-22 11:24:36,164 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 30 [2019-10-22 11:24:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:36,164 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2019-10-22 11:24:36,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:36,164 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2019-10-22 11:24:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:24:36,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:36,165 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:36,165 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:36,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:36,166 INFO L82 PathProgramCache]: Analyzing trace with hash -359204993, now seen corresponding path program 1 times [2019-10-22 11:24:36,166 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:36,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636836340] [2019-10-22 11:24:36,166 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:36,166 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:36,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:36,253 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 11:24:36,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636836340] [2019-10-22 11:24:36,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:36,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:36,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803984735] [2019-10-22 11:24:36,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:36,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:36,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:36,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:36,256 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand 5 states. [2019-10-22 11:24:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:36,373 INFO L93 Difference]: Finished difference Result 241 states and 330 transitions. [2019-10-22 11:24:36,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:24:36,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:24:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:36,375 INFO L225 Difference]: With dead ends: 241 [2019-10-22 11:24:36,376 INFO L226 Difference]: Without dead ends: 239 [2019-10-22 11:24:36,376 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 11:24:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-10-22 11:24:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 113. [2019-10-22 11:24:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-22 11:24:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2019-10-22 11:24:36,389 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 31 [2019-10-22 11:24:36,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:36,389 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2019-10-22 11:24:36,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:36,390 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2019-10-22 11:24:36,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:24:36,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:36,391 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:36,391 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:36,391 INFO L82 PathProgramCache]: Analyzing trace with hash 880224250, now seen corresponding path program 1 times [2019-10-22 11:24:36,392 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:36,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315511463] [2019-10-22 11:24:36,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:36,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:36,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:36,438 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 11:24:36,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315511463] [2019-10-22 11:24:36,438 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:36,438 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:36,438 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312619000] [2019-10-22 11:24:36,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:36,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:36,440 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand 5 states. [2019-10-22 11:24:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:36,508 INFO L93 Difference]: Finished difference Result 266 states and 356 transitions. [2019-10-22 11:24:36,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:36,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:24:36,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:36,510 INFO L225 Difference]: With dead ends: 266 [2019-10-22 11:24:36,510 INFO L226 Difference]: Without dead ends: 159 [2019-10-22 11:24:36,511 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 11:24:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-10-22 11:24:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2019-10-22 11:24:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-22 11:24:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2019-10-22 11:24:36,521 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 31 [2019-10-22 11:24:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:36,522 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2019-10-22 11:24:36,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2019-10-22 11:24:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:24:36,523 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:36,523 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:36,523 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:36,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1138389688, now seen corresponding path program 1 times [2019-10-22 11:24:36,524 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:36,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497551047] [2019-10-22 11:24:36,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:36,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:36,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:36,576 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 11:24:36,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497551047] [2019-10-22 11:24:36,577 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:36,577 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:36,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813178393] [2019-10-22 11:24:36,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:36,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:36,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:36,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:36,578 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand 5 states. [2019-10-22 11:24:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:36,681 INFO L93 Difference]: Finished difference Result 265 states and 357 transitions. [2019-10-22 11:24:36,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:36,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:24:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:36,683 INFO L225 Difference]: With dead ends: 265 [2019-10-22 11:24:36,683 INFO L226 Difference]: Without dead ends: 197 [2019-10-22 11:24:36,683 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 11:24:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-10-22 11:24:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 139. [2019-10-22 11:24:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-22 11:24:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 180 transitions. [2019-10-22 11:24:36,702 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 180 transitions. Word has length 31 [2019-10-22 11:24:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:36,704 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 180 transitions. [2019-10-22 11:24:36,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:36,704 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 180 transitions. [2019-10-22 11:24:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:24:36,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:36,705 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:36,706 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:36,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:36,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2022214963, now seen corresponding path program 1 times [2019-10-22 11:24:36,706 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:36,706 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296052374] [2019-10-22 11:24:36,706 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:36,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:36,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:36,789 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 11:24:36,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296052374] [2019-10-22 11:24:36,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239668899] [2019-10-22 11:24:36,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:36,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:24:36,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:36,949 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 11:24:36,955 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:37,018 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 11:24:37,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [270707484] [2019-10-22 11:24:37,027 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 51 [2019-10-22 11:24:37,071 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:24:37,071 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:24:37,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:37,501 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 11:24:37,506 INFO L168 Benchmark]: Toolchain (without parser) took 4168.21 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 230.2 MB). Free memory was 944.4 MB in the beginning and 1.2 GB in the end (delta: -231.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:37,507 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:37,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:37,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.23 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: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:37,508 INFO L168 Benchmark]: Boogie Preprocessor took 48.27 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 11:24:37,508 INFO L168 Benchmark]: RCFGBuilder took 915.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 65.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:37,511 INFO L168 Benchmark]: TraceAbstraction took 2587.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -114.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:37,518 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 520.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.23 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: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.27 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 915.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 65.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2587.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -114.3 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 11:24:39,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:39,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:39,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:39,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:39,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:39,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:39,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:39,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:39,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:39,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:39,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:39,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:39,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:39,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:39,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:39,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:39,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:39,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:39,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:39,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:39,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:39,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:39,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:39,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:39,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:39,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:39,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:39,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:39,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:39,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:39,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:39,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:39,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:39,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:39,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:39,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:39,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:39,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:39,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:39,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:39,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:24:39,545 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:39,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:39,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:39,547 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:39,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:39,547 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:39,547 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:39,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:39,548 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:39,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:39,549 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:39,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:39,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:39,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:39,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:39,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:39,550 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:24:39,550 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:24:39,550 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:39,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:39,550 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:24:39,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:39,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:39,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:39,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:39,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:39,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:39,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:39,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:39,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:39,552 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:24:39,552 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:24:39,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:39,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:39,553 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_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 -> 903a1f53bc072e1ab483040d7a35aae5e2bdf412 [2019-10-22 11:24:39,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:39,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:39,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:39,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:39,602 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:39,603 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2019-10-22 11:24:39,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data/85ee4d7df/34926b1ca7734982b60c779d460d22a3/FLAG56a0a2d3c [2019-10-22 11:24:40,117 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:40,119 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2019-10-22 11:24:40,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data/85ee4d7df/34926b1ca7734982b60c779d460d22a3/FLAG56a0a2d3c [2019-10-22 11:24:40,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/data/85ee4d7df/34926b1ca7734982b60c779d460d22a3 [2019-10-22 11:24:40,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:40,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:40,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:40,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:40,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:40,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:40" (1/1) ... [2019-10-22 11:24:40,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f168e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:40, skipping insertion in model container [2019-10-22 11:24:40,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:40" (1/1) ... [2019-10-22 11:24:40,643 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:40,677 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:40,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:41,046 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:41,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:41,186 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:41,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41 WrapperNode [2019-10-22 11:24:41,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:41,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:41,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:41,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:41,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:41,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:41,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:41,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:41,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:41,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:41,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:41,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:41,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:24:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:42,197 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:42,198 INFO L284 CfgBuilder]: Removed 156 assume(true) statements. [2019-10-22 11:24:42,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:42 BoogieIcfgContainer [2019-10-22 11:24:42,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:42,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:42,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:42,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:42,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:40" (1/3) ... [2019-10-22 11:24:42,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e087eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:42, skipping insertion in model container [2019-10-22 11:24:42,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (2/3) ... [2019-10-22 11:24:42,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e087eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:42, skipping insertion in model container [2019-10-22 11:24:42,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:42" (3/3) ... [2019-10-22 11:24:42,209 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2019-10-22 11:24:42,224 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:42,235 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:24:42,254 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:24:42,279 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:42,279 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:42,279 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:42,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:42,281 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:42,281 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:42,282 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:42,282 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2019-10-22 11:24:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:24:42,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:42,301 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:42,303 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:42,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2109695399, now seen corresponding path program 1 times [2019-10-22 11:24:42,319 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:42,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1915253478] [2019-10-22 11:24:42,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:42,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:24:42,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:42,553 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 11:24:42,554 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:42,558 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 11:24:42,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1915253478] [2019-10-22 11:24:42,562 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:42,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:24:42,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711263439] [2019-10-22 11:24:42,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:42,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:42,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:42,584 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 2 states. [2019-10-22 11:24:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:42,618 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2019-10-22 11:24:42,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:42,620 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:24:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:42,631 INFO L225 Difference]: With dead ends: 216 [2019-10-22 11:24:42,631 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:24:42,634 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 11:24:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:24:42,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-10-22 11:24:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:24:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2019-10-22 11:24:42,676 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2019-10-22 11:24:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:42,676 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2019-10-22 11:24:42,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2019-10-22 11:24:42,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:24:42,677 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:42,677 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 11:24:42,878 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:42,879 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:42,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:42,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1093063509, now seen corresponding path program 1 times [2019-10-22 11:24:42,881 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:42,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1204784471] [2019-10-22 11:24:42,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:43,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:24:43,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:43,083 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 11:24:43,085 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:43,097 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 11:24:43,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1204784471] [2019-10-22 11:24:43,097 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:43,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:24:43,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894390663] [2019-10-22 11:24:43,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:43,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:43,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:43,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:43,101 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 4 states. [2019-10-22 11:24:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:43,156 INFO L93 Difference]: Finished difference Result 208 states and 306 transitions. [2019-10-22 11:24:43,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:43,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:24:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:43,158 INFO L225 Difference]: With dead ends: 208 [2019-10-22 11:24:43,159 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:24:43,161 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 11:24:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:24:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-10-22 11:24:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:24:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 153 transitions. [2019-10-22 11:24:43,178 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 153 transitions. Word has length 17 [2019-10-22 11:24:43,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:43,180 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 153 transitions. [2019-10-22 11:24:43,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 153 transitions. [2019-10-22 11:24:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:24:43,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:43,181 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:43,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:43,383 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:43,384 INFO L82 PathProgramCache]: Analyzing trace with hash 841535006, now seen corresponding path program 1 times [2019-10-22 11:24:43,384 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:43,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [687020309] [2019-10-22 11:24:43,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:43,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:24:43,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:43,555 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 11:24:43,555 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:43,557 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 11:24:43,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [687020309] [2019-10-22 11:24:43,558 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:43,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:24:43,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358176299] [2019-10-22 11:24:43,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:43,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:43,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:43,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:43,560 INFO L87 Difference]: Start difference. First operand 107 states and 153 transitions. Second operand 3 states. [2019-10-22 11:24:43,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:43,689 INFO L93 Difference]: Finished difference Result 255 states and 363 transitions. [2019-10-22 11:24:43,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:43,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:24:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:43,691 INFO L225 Difference]: With dead ends: 255 [2019-10-22 11:24:43,691 INFO L226 Difference]: Without dead ends: 154 [2019-10-22 11:24:43,692 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 11:24:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-22 11:24:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 148. [2019-10-22 11:24:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-22 11:24:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 204 transitions. [2019-10-22 11:24:43,708 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 204 transitions. Word has length 19 [2019-10-22 11:24:43,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:43,708 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 204 transitions. [2019-10-22 11:24:43,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 204 transitions. [2019-10-22 11:24:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:24:43,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:43,709 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 11:24:43,910 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:43,910 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1884230159, now seen corresponding path program 1 times [2019-10-22 11:24:43,911 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:43,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1683203675] [2019-10-22 11:24:43,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:44,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:24:44,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:44,074 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 11:24:44,075 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:44,082 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 11:24:44,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1683203675] [2019-10-22 11:24:44,082 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:44,083 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:24:44,083 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112244219] [2019-10-22 11:24:44,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:44,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:44,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:44,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:44,084 INFO L87 Difference]: Start difference. First operand 148 states and 204 transitions. Second operand 5 states. [2019-10-22 11:24:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:44,260 INFO L93 Difference]: Finished difference Result 405 states and 543 transitions. [2019-10-22 11:24:44,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:44,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:24:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:44,263 INFO L225 Difference]: With dead ends: 405 [2019-10-22 11:24:44,263 INFO L226 Difference]: Without dead ends: 263 [2019-10-22 11:24:44,264 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 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 11:24:44,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2019-10-22 11:24:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 166. [2019-10-22 11:24:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-10-22 11:24:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 222 transitions. [2019-10-22 11:24:44,296 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 222 transitions. Word has length 25 [2019-10-22 11:24:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:44,297 INFO L462 AbstractCegarLoop]: Abstraction has 166 states and 222 transitions. [2019-10-22 11:24:44,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 222 transitions. [2019-10-22 11:24:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:24:44,299 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:44,299 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 11:24:44,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:44,500 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:44,500 INFO L82 PathProgramCache]: Analyzing trace with hash 251773906, now seen corresponding path program 1 times [2019-10-22 11:24:44,501 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:44,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1760489324] [2019-10-22 11:24:44,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:44,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:24:44,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:44,677 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 11:24:44,678 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:44,704 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 11:24:44,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1760489324] [2019-10-22 11:24:44,704 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:44,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:24:44,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538511991] [2019-10-22 11:24:44,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:24:44,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:44,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:24:44,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:44,706 INFO L87 Difference]: Start difference. First operand 166 states and 222 transitions. Second operand 8 states. [2019-10-22 11:24:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,289 INFO L93 Difference]: Finished difference Result 1156 states and 1561 transitions. [2019-10-22 11:24:45,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:24:45,290 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 11:24:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,293 INFO L225 Difference]: With dead ends: 1156 [2019-10-22 11:24:45,293 INFO L226 Difference]: Without dead ends: 996 [2019-10-22 11:24:45,294 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:24:45,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-10-22 11:24:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 403. [2019-10-22 11:24:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2019-10-22 11:24:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 525 transitions. [2019-10-22 11:24:45,333 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 525 transitions. Word has length 25 [2019-10-22 11:24:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,334 INFO L462 AbstractCegarLoop]: Abstraction has 403 states and 525 transitions. [2019-10-22 11:24:45,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:24:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 525 transitions. [2019-10-22 11:24:45,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:24:45,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,336 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:45,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:45,537 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1671747478, now seen corresponding path program 1 times [2019-10-22 11:24:45,538 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:45,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1867753936] [2019-10-22 11:24:45,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:45,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:24:45,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:45,689 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 11:24:45,689 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:45,712 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 11:24:45,712 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1867753936] [2019-10-22 11:24:45,712 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:45,712 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:24:45,712 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640752967] [2019-10-22 11:24:45,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:45,713 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:45,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:45,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:45,713 INFO L87 Difference]: Start difference. First operand 403 states and 525 transitions. Second operand 6 states. [2019-10-22 11:24:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,875 INFO L93 Difference]: Finished difference Result 926 states and 1191 transitions. [2019-10-22 11:24:45,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:45,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-22 11:24:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,878 INFO L225 Difference]: With dead ends: 926 [2019-10-22 11:24:45,878 INFO L226 Difference]: Without dead ends: 492 [2019-10-22 11:24:45,879 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 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 11:24:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-22 11:24:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 324. [2019-10-22 11:24:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-10-22 11:24:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 418 transitions. [2019-10-22 11:24:45,909 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 418 transitions. Word has length 39 [2019-10-22 11:24:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,909 INFO L462 AbstractCegarLoop]: Abstraction has 324 states and 418 transitions. [2019-10-22 11:24:45,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 418 transitions. [2019-10-22 11:24:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-22 11:24:45,915 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,915 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:46,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:46,117 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:46,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:46,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1844883335, now seen corresponding path program 1 times [2019-10-22 11:24:46,118 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:46,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1315342475] [2019-10-22 11:24:46,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:46,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:24:46,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:46,282 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 11:24:46,282 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:46,286 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 11:24:46,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1315342475] [2019-10-22 11:24:46,288 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:46,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:24:46,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281113908] [2019-10-22 11:24:46,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:46,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:46,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:46,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:46,290 INFO L87 Difference]: Start difference. First operand 324 states and 418 transitions. Second operand 3 states. [2019-10-22 11:24:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:46,309 INFO L93 Difference]: Finished difference Result 324 states and 418 transitions. [2019-10-22 11:24:46,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:46,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-10-22 11:24:46,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:46,311 INFO L225 Difference]: With dead ends: 324 [2019-10-22 11:24:46,312 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 11:24:46,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 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 11:24:46,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 11:24:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-10-22 11:24:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-22 11:24:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 196 transitions. [2019-10-22 11:24:46,326 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 196 transitions. Word has length 44 [2019-10-22 11:24:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:46,326 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 196 transitions. [2019-10-22 11:24:46,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 196 transitions. [2019-10-22 11:24:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-22 11:24:46,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:46,330 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:46,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:46,531 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:46,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1197109900, now seen corresponding path program 1 times [2019-10-22 11:24:46,531 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:46,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1597784989] [2019-10-22 11:24:46,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:46,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:24:46,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:24:46,717 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:24:46,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1597784989] [2019-10-22 11:24:46,726 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:46,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:24:46,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930589533] [2019-10-22 11:24:46,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:46,729 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:46,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:46,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:46,730 INFO L87 Difference]: Start difference. First operand 148 states and 196 transitions. Second operand 6 states. [2019-10-22 11:24:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:46,870 INFO L93 Difference]: Finished difference Result 766 states and 1050 transitions. [2019-10-22 11:24:46,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 11:24:46,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2019-10-22 11:24:46,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:46,877 INFO L225 Difference]: With dead ends: 766 [2019-10-22 11:24:46,878 INFO L226 Difference]: Without dead ends: 624 [2019-10-22 11:24:46,878 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:24:46,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-10-22 11:24:46,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 288. [2019-10-22 11:24:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-10-22 11:24:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 378 transitions. [2019-10-22 11:24:46,910 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 378 transitions. Word has length 49 [2019-10-22 11:24:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:46,911 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 378 transitions. [2019-10-22 11:24:46,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 378 transitions. [2019-10-22 11:24:46,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:24:46,911 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:46,912 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:47,113 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:47,113 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:47,113 INFO L82 PathProgramCache]: Analyzing trace with hash 2022214963, now seen corresponding path program 1 times [2019-10-22 11:24:47,114 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:47,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1482677997] [2019-10-22 11:24:47,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:47,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:24:47,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:47,273 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 11:24:47,273 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:47,315 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 11:24:47,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1482677997] [2019-10-22 11:24:47,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320807702] [2019-10-22 11:24:47,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:47,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:24:47,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:47,449 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 11:24:47,449 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:47,458 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 11:24:47,458 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:24:47,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:24:47,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379810615] [2019-10-22 11:24:47,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:24:47,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:47,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:24:47,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:47,460 INFO L87 Difference]: Start difference. First operand 288 states and 378 transitions. Second operand 10 states. [2019-10-22 11:24:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:48,321 INFO L93 Difference]: Finished difference Result 1895 states and 2527 transitions. [2019-10-22 11:24:48,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:24:48,321 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2019-10-22 11:24:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:48,328 INFO L225 Difference]: With dead ends: 1895 [2019-10-22 11:24:48,328 INFO L226 Difference]: Without dead ends: 1661 [2019-10-22 11:24:48,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:24:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2019-10-22 11:24:48,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 520. [2019-10-22 11:24:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-10-22 11:24:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 692 transitions. [2019-10-22 11:24:48,382 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 692 transitions. Word has length 50 [2019-10-22 11:24:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:48,382 INFO L462 AbstractCegarLoop]: Abstraction has 520 states and 692 transitions. [2019-10-22 11:24:48,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:24:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 692 transitions. [2019-10-22 11:24:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 11:24:48,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:48,384 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-22 11:24:48,784 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 11:24:48,785 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:48,785 INFO L82 PathProgramCache]: Analyzing trace with hash 866267864, now seen corresponding path program 2 times [2019-10-22 11:24:48,786 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:48,786 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1522566052] [2019-10-22 11:24:48,786 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/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 11:24:50,629 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:24:50,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:24:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:53,008 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:24:53,009 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:24:53,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:53,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:53 BoogieIcfgContainer [2019-10-22 11:24:53,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:53,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:53,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:53,349 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:53,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:42" (3/4) ... [2019-10-22 11:24:53,351 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:24:53,498 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3d90d4dc-fe9c-46a6-b8d0-b470c9dd3014/bin/utaipan/witness.graphml [2019-10-22 11:24:53,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:53,501 INFO L168 Benchmark]: Toolchain (without parser) took 12872.56 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 281.5 MB). Free memory was 947.0 MB in the beginning and 1.0 GB in the end (delta: -97.5 MB). Peak memory consumption was 184.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,502 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:53,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 557.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.32 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,502 INFO L168 Benchmark]: Boogie Preprocessor took 38.55 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 11:24:53,503 INFO L168 Benchmark]: RCFGBuilder took 899.41 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: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,503 INFO L168 Benchmark]: TraceAbstraction took 11148.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 118.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 125.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,503 INFO L168 Benchmark]: Witness Printer took 150.69 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,505 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 557.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 73.32 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.55 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 899.41 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: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11148.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 118.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 125.4 MB. Max. memory is 11.5 GB. * Witness Printer took 150.69 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 434]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L155] int pumpRunning = 0; [L156] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L440] int waterLevel = 1; [L441] int methaneLevelCritical = 0; [L703] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L407] int retValue_acc ; [L408] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L414] tmp = valid_product() [L416] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L83] int splverifierCounter ; [L84] int tmp ; [L85] int tmp___0 ; [L86] int tmp___1 ; [L87] int tmp___2 ; [L90] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L92] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L94] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L100] tmp = __VERIFIER_nondet_int() [L102] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L458] COND TRUE waterLevel < 2 [L459] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L170] COND TRUE \read(systemActive) [L218] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L221] COND FALSE !(\read(pumpRunning)) [L192] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L195] COND TRUE ! pumpRunning [L315] int retValue_acc ; [L316] int tmp ; [L317] int tmp___0 ; [L520] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L523] COND FALSE !(waterLevel < 2) [L527] retValue_acc = 0 [L528] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L321] tmp = isHighWaterSensorDry() [L323] COND FALSE !(\read(tmp)) [L326] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L328] retValue_acc = tmp___0 [L329] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] tmp = isHighWaterLevel() [L199] COND TRUE \read(tmp) [L246] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L901] int tmp ; [L902] int tmp___0 ; [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L92] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L94] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L163] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] COND TRUE \read(systemActive) [L218] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L221] COND TRUE \read(pumpRunning) [L259] int retValue_acc ; [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L192] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L901] int tmp ; [L902] int tmp___0 ; [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L92] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L94] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] COND TRUE \read(systemActive) [L218] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L221] COND TRUE \read(pumpRunning) [L259] int retValue_acc ; [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L192] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L901] int tmp ; [L902] int tmp___0 ; [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] tmp = getWaterLevel() [L908] COND TRUE tmp == 0 [L270] int retValue_acc ; [L273] retValue_acc = pumpRunning [L274] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L910] tmp___0 = isPumpRunning() [L912] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L434] __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, 111 locations, 3 error locations. Result: UNSAFE, OverallTime: 11.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1400 SDtfs, 3362 SDslu, 3449 SDs, 0 SdLazy, 656 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 686 GetRequests, 621 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=520occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 2341 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 648 ConstructedInterpolants, 0 QuantifiedInterpolants, 73480 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1990 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 52/88 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...