./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product44.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_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 cd9d3373e3670d73493569b1c43b551709fc0f6c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 cd9d3373e3670d73493569b1c43b551709fc0f6c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:19,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:19,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:19,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:19,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:19,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:19,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:19,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:19,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:19,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:19,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:19,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:19,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:19,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:19,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:19,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:19,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:19,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:19,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:19,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:19,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:19,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:19,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:19,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:19,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:19,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:19,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:19,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:19,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:19,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:19,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:19,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:19,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:19,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:19,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:19,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:19,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:19,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:19,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:19,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:19,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:19,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:19,118 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:19,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:19,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:19,119 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:19,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:19,119 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:19,119 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:19,119 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:19,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:19,120 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:19,120 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:19,120 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:19,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:19,121 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:19,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:19,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:19,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:19,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:19,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:19,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:19,122 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:19,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:19,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:19,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:19,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:19,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:19,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:19,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:19,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:19,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:19,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:19,124 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:19,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:19,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:19,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:19,124 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_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 -> cd9d3373e3670d73493569b1c43b551709fc0f6c [2019-10-22 11:26:19,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:19,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:19,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:19,161 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:19,161 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:19,162 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2019-10-22 11:26:19,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data/333c3be7c/26be3388e6914befadf236979ac2a6aa/FLAG0d0e7be34 [2019-10-22 11:26:19,615 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:19,616 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2019-10-22 11:26:19,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data/333c3be7c/26be3388e6914befadf236979ac2a6aa/FLAG0d0e7be34 [2019-10-22 11:26:19,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data/333c3be7c/26be3388e6914befadf236979ac2a6aa [2019-10-22 11:26:19,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:19,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:19,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:19,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:19,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:19,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:19" (1/1) ... [2019-10-22 11:26:19,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412806b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:19, skipping insertion in model container [2019-10-22 11:26:19,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:19" (1/1) ... [2019-10-22 11:26:19,655 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:19,695 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:19,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:19,994 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:20,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:20,088 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:20,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20 WrapperNode [2019-10-22 11:26:20,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:20,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:20,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:20,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:20,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:20,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:20,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:20,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:20,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:20,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:20,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:20,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:20,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:26:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:21,028 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:21,029 INFO L284 CfgBuilder]: Removed 120 assume(true) statements. [2019-10-22 11:26:21,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:21 BoogieIcfgContainer [2019-10-22 11:26:21,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:21,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:21,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:21,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:21,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:19" (1/3) ... [2019-10-22 11:26:21,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21567da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:21, skipping insertion in model container [2019-10-22 11:26:21,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (2/3) ... [2019-10-22 11:26:21,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21567da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:21, skipping insertion in model container [2019-10-22 11:26:21,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:21" (3/3) ... [2019-10-22 11:26:21,039 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2019-10-22 11:26:21,048 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:21,055 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:26:21,068 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:26:21,096 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:21,096 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:21,096 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:21,097 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:21,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:21,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:21,098 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:21,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2019-10-22 11:26:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:26:21,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:21,118 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:21,120 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:21,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:21,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1782116946, now seen corresponding path program 1 times [2019-10-22 11:26:21,133 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:21,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676260219] [2019-10-22 11:26:21,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:21,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676260219] [2019-10-22 11:26:21,325 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:21,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:21,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733512520] [2019-10-22 11:26:21,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:21,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:21,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:21,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:21,347 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2019-10-22 11:26:21,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:21,372 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2019-10-22 11:26:21,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:21,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:26:21,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:21,384 INFO L225 Difference]: With dead ends: 172 [2019-10-22 11:26:21,384 INFO L226 Difference]: Without dead ends: 85 [2019-10-22 11:26:21,387 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-22 11:26:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-10-22 11:26:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-22 11:26:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2019-10-22 11:26:21,419 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2019-10-22 11:26:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:21,419 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2019-10-22 11:26:21,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2019-10-22 11:26:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:26:21,420 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:21,421 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:21,421 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:21,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:21,421 INFO L82 PathProgramCache]: Analyzing trace with hash 735360049, now seen corresponding path program 1 times [2019-10-22 11:26:21,422 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:21,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798140508] [2019-10-22 11:26:21,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:21,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798140508] [2019-10-22 11:26:21,496 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:21,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:21,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29632671] [2019-10-22 11:26:21,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:21,497 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:21,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:21,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:21,498 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 3 states. [2019-10-22 11:26:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:21,507 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2019-10-22 11:26:21,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:21,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:26:21,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:21,511 INFO L225 Difference]: With dead ends: 85 [2019-10-22 11:26:21,511 INFO L226 Difference]: Without dead ends: 39 [2019-10-22 11:26:21,512 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-22 11:26:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-22 11:26:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 11:26:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2019-10-22 11:26:21,516 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2019-10-22 11:26:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:21,517 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2019-10-22 11:26:21,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2019-10-22 11:26:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:26:21,519 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:21,519 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:21,519 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:21,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1297648259, now seen corresponding path program 1 times [2019-10-22 11:26:21,520 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:21,520 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138518447] [2019-10-22 11:26:21,520 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,520 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:21,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138518447] [2019-10-22 11:26:21,576 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:21,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:21,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916574459] [2019-10-22 11:26:21,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:21,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:21,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:21,577 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2019-10-22 11:26:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:21,606 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2019-10-22 11:26:21,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:21,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:26:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:21,608 INFO L225 Difference]: With dead ends: 105 [2019-10-22 11:26:21,608 INFO L226 Difference]: Without dead ends: 72 [2019-10-22 11:26:21,608 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-22 11:26:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2019-10-22 11:26:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-22 11:26:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2019-10-22 11:26:21,616 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 22 [2019-10-22 11:26:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:21,617 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2019-10-22 11:26:21,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2019-10-22 11:26:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:26:21,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:21,618 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:21,618 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:21,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:21,618 INFO L82 PathProgramCache]: Analyzing trace with hash -372126526, now seen corresponding path program 1 times [2019-10-22 11:26:21,618 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:21,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020958246] [2019-10-22 11:26:21,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:21,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020958246] [2019-10-22 11:26:21,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:21,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:21,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926042189] [2019-10-22 11:26:21,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:21,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:21,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:21,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:21,690 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand 3 states. [2019-10-22 11:26:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:21,749 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2019-10-22 11:26:21,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:21,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 11:26:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:21,751 INFO L225 Difference]: With dead ends: 171 [2019-10-22 11:26:21,751 INFO L226 Difference]: Without dead ends: 109 [2019-10-22 11:26:21,751 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:21,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-22 11:26:21,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2019-10-22 11:26:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:26:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2019-10-22 11:26:21,766 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 23 [2019-10-22 11:26:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:21,766 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2019-10-22 11:26:21,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2019-10-22 11:26:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:26:21,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:21,767 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:21,767 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:21,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:21,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1852423790, now seen corresponding path program 1 times [2019-10-22 11:26:21,768 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:21,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486351740] [2019-10-22 11:26:21,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:21,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486351740] [2019-10-22 11:26:21,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:21,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:21,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456615322] [2019-10-22 11:26:21,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:21,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:21,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:21,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:21,875 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand 5 states. [2019-10-22 11:26:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:21,966 INFO L93 Difference]: Finished difference Result 399 states and 585 transitions. [2019-10-22 11:26:21,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:21,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:26:21,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:21,968 INFO L225 Difference]: With dead ends: 399 [2019-10-22 11:26:21,968 INFO L226 Difference]: Without dead ends: 298 [2019-10-22 11:26:21,969 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 11:26:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2019-10-22 11:26:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 194. [2019-10-22 11:26:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2019-10-22 11:26:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 272 transitions. [2019-10-22 11:26:21,989 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 272 transitions. Word has length 25 [2019-10-22 11:26:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:21,989 INFO L462 AbstractCegarLoop]: Abstraction has 194 states and 272 transitions. [2019-10-22 11:26:21,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 272 transitions. [2019-10-22 11:26:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:26:21,990 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:21,990 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:21,990 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:21,991 INFO L82 PathProgramCache]: Analyzing trace with hash 483234516, now seen corresponding path program 1 times [2019-10-22 11:26:21,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:21,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162234512] [2019-10-22 11:26:21,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:21,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:22,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162234512] [2019-10-22 11:26:22,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:22,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:22,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008333534] [2019-10-22 11:26:22,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:22,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:22,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:22,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:22,144 INFO L87 Difference]: Start difference. First operand 194 states and 272 transitions. Second operand 5 states. [2019-10-22 11:26:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:22,392 INFO L93 Difference]: Finished difference Result 398 states and 570 transitions. [2019-10-22 11:26:22,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:26:22,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-10-22 11:26:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:22,395 INFO L225 Difference]: With dead ends: 398 [2019-10-22 11:26:22,396 INFO L226 Difference]: Without dead ends: 396 [2019-10-22 11:26:22,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2019-10-22 11:26:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 194. [2019-10-22 11:26:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2019-10-22 11:26:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2019-10-22 11:26:22,439 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 26 [2019-10-22 11:26:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:22,439 INFO L462 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2019-10-22 11:26:22,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2019-10-22 11:26:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:22,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:22,445 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:22,455 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:22,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1957615203, now seen corresponding path program 1 times [2019-10-22 11:26:22,456 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:22,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199772229] [2019-10-22 11:26:22,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:22,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199772229] [2019-10-22 11:26:22,516 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:22,517 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:22,517 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630502605] [2019-10-22 11:26:22,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:22,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:22,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:22,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:22,518 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 5 states. [2019-10-22 11:26:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:22,576 INFO L93 Difference]: Finished difference Result 542 states and 750 transitions. [2019-10-22 11:26:22,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:22,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-10-22 11:26:22,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:22,578 INFO L225 Difference]: With dead ends: 542 [2019-10-22 11:26:22,578 INFO L226 Difference]: Without dead ends: 354 [2019-10-22 11:26:22,579 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-10-22 11:26:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 206. [2019-10-22 11:26:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-10-22 11:26:22,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 282 transitions. [2019-10-22 11:26:22,596 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 282 transitions. Word has length 33 [2019-10-22 11:26:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:22,596 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 282 transitions. [2019-10-22 11:26:22,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:22,596 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 282 transitions. [2019-10-22 11:26:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:22,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:22,598 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:22,598 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:22,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:22,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1750546079, now seen corresponding path program 1 times [2019-10-22 11:26:22,599 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:22,599 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091241759] [2019-10-22 11:26:22,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:22,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091241759] [2019-10-22 11:26:22,637 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:22,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:22,638 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500993612] [2019-10-22 11:26:22,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:22,638 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:22,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:22,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:22,639 INFO L87 Difference]: Start difference. First operand 206 states and 282 transitions. Second operand 4 states. [2019-10-22 11:26:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:22,675 INFO L93 Difference]: Finished difference Result 444 states and 607 transitions. [2019-10-22 11:26:22,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:22,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-10-22 11:26:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:22,677 INFO L225 Difference]: With dead ends: 444 [2019-10-22 11:26:22,677 INFO L226 Difference]: Without dead ends: 244 [2019-10-22 11:26:22,677 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-10-22 11:26:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 165. [2019-10-22 11:26:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-10-22 11:26:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 222 transitions. [2019-10-22 11:26:22,691 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 222 transitions. Word has length 33 [2019-10-22 11:26:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:22,691 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 222 transitions. [2019-10-22 11:26:22,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 222 transitions. [2019-10-22 11:26:22,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:22,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:22,693 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:22,693 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:22,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:22,694 INFO L82 PathProgramCache]: Analyzing trace with hash 470682401, now seen corresponding path program 1 times [2019-10-22 11:26:22,694 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:22,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844276538] [2019-10-22 11:26:22,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:22,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844276538] [2019-10-22 11:26:22,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:22,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:22,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642039255] [2019-10-22 11:26:22,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:22,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:22,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:22,766 INFO L87 Difference]: Start difference. First operand 165 states and 222 transitions. Second operand 5 states. [2019-10-22 11:26:22,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:22,905 INFO L93 Difference]: Finished difference Result 613 states and 858 transitions. [2019-10-22 11:26:22,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:22,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-10-22 11:26:22,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:22,907 INFO L225 Difference]: With dead ends: 613 [2019-10-22 11:26:22,908 INFO L226 Difference]: Without dead ends: 502 [2019-10-22 11:26:22,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2019-10-22 11:26:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 242. [2019-10-22 11:26:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-10-22 11:26:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 323 transitions. [2019-10-22 11:26:22,933 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 323 transitions. Word has length 33 [2019-10-22 11:26:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:22,933 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 323 transitions. [2019-10-22 11:26:22,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 323 transitions. [2019-10-22 11:26:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:26:22,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:22,935 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:22,935 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:22,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1853071629, now seen corresponding path program 1 times [2019-10-22 11:26:22,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:22,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560212920] [2019-10-22 11:26:22,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:23,011 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 11:26:23,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560212920] [2019-10-22 11:26:23,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871789504] [2019-10-22 11:26:23,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:23,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:23,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:23,178 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 11:26:23,179 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:23,203 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 11:26:23,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1685695574] [2019-10-22 11:26:23,208 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 49 [2019-10-22 11:26:23,246 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:26:23,246 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:26:23,667 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:23,667 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 11:26:23,671 INFO L168 Benchmark]: Toolchain (without parser) took 4030.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 938.3 MB in the beginning and 1.0 GB in the end (delta: -76.7 MB). Peak memory consumption was 73.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,672 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 955.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:23,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 936.9 MB in the beginning and 1.1 GB in the end (delta: -198.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.86 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,674 INFO L168 Benchmark]: Boogie Preprocessor took 37.73 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,675 INFO L168 Benchmark]: RCFGBuilder took 815.23 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: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,675 INFO L168 Benchmark]: TraceAbstraction took 2638.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 955.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 447.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 936.9 MB in the beginning and 1.1 GB in the end (delta: -198.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 87.86 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.73 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 815.23 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: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2638.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:25,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:25,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:25,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:25,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:25,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:25,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:25,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:25,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:25,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:25,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:25,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:25,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:25,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:25,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:25,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:25,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:25,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:25,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:25,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:25,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:25,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:25,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:25,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:25,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:25,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:25,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:25,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:25,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:25,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:25,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:25,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:25,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:25,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:25,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:25,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:25,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:25,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:25,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:25,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:25,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:25,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:26:25,688 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:25,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:25,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:25,689 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:25,690 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:25,690 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:25,690 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:25,690 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:25,690 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:25,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:25,691 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:25,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:25,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:25,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:25,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:25,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:25,692 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:25,692 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:25,692 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:25,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:25,692 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:25,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:25,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:25,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:25,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:25,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:25,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:25,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:25,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:25,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:25,694 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:25,694 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:25,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:25,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:25,695 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_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 -> cd9d3373e3670d73493569b1c43b551709fc0f6c [2019-10-22 11:26:25,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:25,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:25,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:25,736 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:25,736 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:25,737 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2019-10-22 11:26:25,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data/d99eeed79/61ecc78de94b451b9226e820df5913ad/FLAG53e49761c [2019-10-22 11:26:26,259 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:26,260 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2019-10-22 11:26:26,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data/d99eeed79/61ecc78de94b451b9226e820df5913ad/FLAG53e49761c [2019-10-22 11:26:26,767 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/data/d99eeed79/61ecc78de94b451b9226e820df5913ad [2019-10-22 11:26:26,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:26,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:26,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:26,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:26,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:26,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d413584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26, skipping insertion in model container [2019-10-22 11:26:26,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,786 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:26,833 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:27,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:27,175 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:27,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:27,281 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:27,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27 WrapperNode [2019-10-22 11:26:27,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:27,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:27,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:27,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:27,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:27,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:27,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:27,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:27,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... [2019-10-22 11:26:27,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:27,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:27,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:27,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:27,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:27,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:27,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:26:27,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:28,255 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:28,255 INFO L284 CfgBuilder]: Removed 120 assume(true) statements. [2019-10-22 11:26:28,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:28 BoogieIcfgContainer [2019-10-22 11:26:28,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:28,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:28,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:28,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:28,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:26" (1/3) ... [2019-10-22 11:26:28,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89fe147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:28, skipping insertion in model container [2019-10-22 11:26:28,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:27" (2/3) ... [2019-10-22 11:26:28,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89fe147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:28, skipping insertion in model container [2019-10-22 11:26:28,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:28" (3/3) ... [2019-10-22 11:26:28,264 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2019-10-22 11:26:28,273 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:28,280 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:26:28,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:26:28,314 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:28,314 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:28,314 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:28,315 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:28,315 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:28,315 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:28,315 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:28,316 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2019-10-22 11:26:28,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:26:28,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:28,338 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:28,340 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:28,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1782116946, now seen corresponding path program 1 times [2019-10-22 11:26:28,356 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:28,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [716061349] [2019-10-22 11:26:28,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:28,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:26:28,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:28,564 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:28,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [716061349] [2019-10-22 11:26:28,570 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:28,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:26:28,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291127403] [2019-10-22 11:26:28,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:28,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:28,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:28,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:28,588 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2019-10-22 11:26:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:28,612 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2019-10-22 11:26:28,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:28,614 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:26:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:28,624 INFO L225 Difference]: With dead ends: 172 [2019-10-22 11:26:28,624 INFO L226 Difference]: Without dead ends: 85 [2019-10-22 11:26:28,629 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 11:26:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-22 11:26:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-10-22 11:26:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-22 11:26:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2019-10-22 11:26:28,679 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2019-10-22 11:26:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:28,679 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2019-10-22 11:26:28,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2019-10-22 11:26:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:26:28,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:28,681 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:28,882 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:28,882 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:28,883 INFO L82 PathProgramCache]: Analyzing trace with hash 735360049, now seen corresponding path program 1 times [2019-10-22 11:26:28,884 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:28,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1122881353] [2019-10-22 11:26:28,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:29,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:29,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:29,036 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:29,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1122881353] [2019-10-22 11:26:29,049 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:29,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:26:29,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638588864] [2019-10-22 11:26:29,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:29,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:29,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:29,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:29,051 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 4 states. [2019-10-22 11:26:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:29,165 INFO L93 Difference]: Finished difference Result 292 states and 417 transitions. [2019-10-22 11:26:29,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:29,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:26:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:29,171 INFO L225 Difference]: With dead ends: 292 [2019-10-22 11:26:29,171 INFO L226 Difference]: Without dead ends: 213 [2019-10-22 11:26:29,172 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 11:26:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-10-22 11:26:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 126. [2019-10-22 11:26:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-22 11:26:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 180 transitions. [2019-10-22 11:26:29,211 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 180 transitions. Word has length 17 [2019-10-22 11:26:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:29,212 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 180 transitions. [2019-10-22 11:26:29,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 180 transitions. [2019-10-22 11:26:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:26:29,213 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:29,213 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:29,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:29,414 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:29,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1773378329, now seen corresponding path program 1 times [2019-10-22 11:26:29,415 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:29,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [296822654] [2019-10-22 11:26:29,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:29,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:29,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:29,559 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:29,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [296822654] [2019-10-22 11:26:29,561 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:29,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:26:29,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260852041] [2019-10-22 11:26:29,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:29,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:29,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:29,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:29,563 INFO L87 Difference]: Start difference. First operand 126 states and 180 transitions. Second operand 3 states. [2019-10-22 11:26:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:29,670 INFO L93 Difference]: Finished difference Result 291 states and 413 transitions. [2019-10-22 11:26:29,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:29,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:26:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:29,672 INFO L225 Difference]: With dead ends: 291 [2019-10-22 11:26:29,672 INFO L226 Difference]: Without dead ends: 171 [2019-10-22 11:26:29,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-10-22 11:26:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2019-10-22 11:26:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-10-22 11:26:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 226 transitions. [2019-10-22 11:26:29,693 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 226 transitions. Word has length 18 [2019-10-22 11:26:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:29,693 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 226 transitions. [2019-10-22 11:26:29,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 226 transitions. [2019-10-22 11:26:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:26:29,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:29,694 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 11:26:29,895 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:29,896 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:29,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1183561925, now seen corresponding path program 1 times [2019-10-22 11:26:29,896 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:29,897 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1072424751] [2019-10-22 11:26:29,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:30,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:30,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:30,058 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:30,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1072424751] [2019-10-22 11:26:30,091 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:30,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:26:30,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773860299] [2019-10-22 11:26:30,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:26:30,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:30,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:26:30,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:30,093 INFO L87 Difference]: Start difference. First operand 165 states and 226 transitions. Second operand 8 states. [2019-10-22 11:26:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:30,529 INFO L93 Difference]: Finished difference Result 1043 states and 1461 transitions. [2019-10-22 11:26:30,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:26:30,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 11:26:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:30,534 INFO L225 Difference]: With dead ends: 1043 [2019-10-22 11:26:30,534 INFO L226 Difference]: Without dead ends: 884 [2019-10-22 11:26:30,535 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:26:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2019-10-22 11:26:30,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 426. [2019-10-22 11:26:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-22 11:26:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 564 transitions. [2019-10-22 11:26:30,591 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 564 transitions. Word has length 24 [2019-10-22 11:26:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:30,591 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 564 transitions. [2019-10-22 11:26:30,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:26:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 564 transitions. [2019-10-22 11:26:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:26:30,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:30,597 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:30,798 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:30,798 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:30,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1715700743, now seen corresponding path program 1 times [2019-10-22 11:26:30,799 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:30,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1809960650] [2019-10-22 11:26:30,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:30,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:26:30,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:30,993 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:30,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1809960650] [2019-10-22 11:26:30,997 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:30,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:26:30,997 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393535313] [2019-10-22 11:26:30,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:30,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:30,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:30,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:30,998 INFO L87 Difference]: Start difference. First operand 426 states and 564 transitions. Second operand 5 states. [2019-10-22 11:26:31,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:31,135 INFO L93 Difference]: Finished difference Result 1310 states and 1707 transitions. [2019-10-22 11:26:31,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:31,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-22 11:26:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:31,138 INFO L225 Difference]: With dead ends: 1310 [2019-10-22 11:26:31,138 INFO L226 Difference]: Without dead ends: 890 [2019-10-22 11:26:31,139 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:31,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-10-22 11:26:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 453. [2019-10-22 11:26:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2019-10-22 11:26:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 591 transitions. [2019-10-22 11:26:31,187 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 591 transitions. Word has length 38 [2019-10-22 11:26:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:31,188 INFO L462 AbstractCegarLoop]: Abstraction has 453 states and 591 transitions. [2019-10-22 11:26:31,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 591 transitions. [2019-10-22 11:26:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:26:31,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:31,191 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:31,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:31,392 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:31,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1581687237, now seen corresponding path program 1 times [2019-10-22 11:26:31,392 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:31,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1368229084] [2019-10-22 11:26:31,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:31,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:26:31,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:31,546 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:31,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1368229084] [2019-10-22 11:26:31,563 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:31,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:26:31,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437728352] [2019-10-22 11:26:31,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:26:31,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:31,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:26:31,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:31,565 INFO L87 Difference]: Start difference. First operand 453 states and 591 transitions. Second operand 6 states. [2019-10-22 11:26:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:31,710 INFO L93 Difference]: Finished difference Result 1151 states and 1489 transitions. [2019-10-22 11:26:31,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:31,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-22 11:26:31,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:31,713 INFO L225 Difference]: With dead ends: 1151 [2019-10-22 11:26:31,713 INFO L226 Difference]: Without dead ends: 637 [2019-10-22 11:26:31,714 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-22 11:26:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 344. [2019-10-22 11:26:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-22 11:26:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 450 transitions. [2019-10-22 11:26:31,752 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 450 transitions. Word has length 38 [2019-10-22 11:26:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:31,752 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 450 transitions. [2019-10-22 11:26:31,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:26:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 450 transitions. [2019-10-22 11:26:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 11:26:31,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:31,756 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:31,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:31,957 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:31,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:31,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1174218714, now seen corresponding path program 1 times [2019-10-22 11:26:31,957 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:31,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1952043999] [2019-10-22 11:26:31,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:32,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:26:32,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:32,098 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:32,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1952043999] [2019-10-22 11:26:32,101 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:32,101 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:26:32,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435492874] [2019-10-22 11:26:32,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:32,102 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:32,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:32,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:32,103 INFO L87 Difference]: Start difference. First operand 344 states and 450 transitions. Second operand 5 states. [2019-10-22 11:26:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:32,372 INFO L93 Difference]: Finished difference Result 883 states and 1154 transitions. [2019-10-22 11:26:32,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:26:32,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-10-22 11:26:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:32,376 INFO L225 Difference]: With dead ends: 883 [2019-10-22 11:26:32,376 INFO L226 Difference]: Without dead ends: 877 [2019-10-22 11:26:32,376 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2019-10-22 11:26:32,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 344. [2019-10-22 11:26:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-22 11:26:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 444 transitions. [2019-10-22 11:26:32,411 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 444 transitions. Word has length 41 [2019-10-22 11:26:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:32,412 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 444 transitions. [2019-10-22 11:26:32,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 444 transitions. [2019-10-22 11:26:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:26:32,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:32,413 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:32,614 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:32,614 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:32,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1333462769, now seen corresponding path program 1 times [2019-10-22 11:26:32,615 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:32,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1445977706] [2019-10-22 11:26:32,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:32,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:32,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:32,760 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 11:26:32,760 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:32,764 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 11:26:32,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1445977706] [2019-10-22 11:26:32,765 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:32,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:26:32,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985707423] [2019-10-22 11:26:32,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:32,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:32,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:32,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:32,766 INFO L87 Difference]: Start difference. First operand 344 states and 444 transitions. Second operand 3 states. [2019-10-22 11:26:32,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:32,789 INFO L93 Difference]: Finished difference Result 344 states and 444 transitions. [2019-10-22 11:26:32,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:32,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-22 11:26:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:32,790 INFO L225 Difference]: With dead ends: 344 [2019-10-22 11:26:32,790 INFO L226 Difference]: Without dead ends: 180 [2019-10-22 11:26:32,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:32,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-10-22 11:26:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2019-10-22 11:26:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-10-22 11:26:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 242 transitions. [2019-10-22 11:26:32,812 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 242 transitions. Word has length 43 [2019-10-22 11:26:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:32,812 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 242 transitions. [2019-10-22 11:26:32,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 242 transitions. [2019-10-22 11:26:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:26:32,813 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:32,814 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:33,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:33,014 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:33,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:33,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1853071629, now seen corresponding path program 1 times [2019-10-22 11:26:33,015 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:33,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1732115754] [2019-10-22 11:26:33,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:33,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:26:33,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:33,191 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 11:26:33,191 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:33,226 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 11:26:33,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1732115754] [2019-10-22 11:26:33,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657644614] [2019-10-22 11:26:33,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:33,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:26:33,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:33,357 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 11:26:33,358 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:33,366 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 11:26:33,367 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:33,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:26:33,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138735723] [2019-10-22 11:26:33,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:26:33,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:33,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:26:33,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:26:33,368 INFO L87 Difference]: Start difference. First operand 180 states and 242 transitions. Second operand 10 states. [2019-10-22 11:26:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:34,057 INFO L93 Difference]: Finished difference Result 1068 states and 1489 transitions. [2019-10-22 11:26:34,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:26:34,057 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2019-10-22 11:26:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:34,061 INFO L225 Difference]: With dead ends: 1068 [2019-10-22 11:26:34,062 INFO L226 Difference]: Without dead ends: 935 [2019-10-22 11:26:34,062 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:26:34,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2019-10-22 11:26:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 300. [2019-10-22 11:26:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-22 11:26:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 410 transitions. [2019-10-22 11:26:34,095 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 410 transitions. Word has length 48 [2019-10-22 11:26:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:34,096 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 410 transitions. [2019-10-22 11:26:34,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:26:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 410 transitions. [2019-10-22 11:26:34,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 11:26:34,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:34,096 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:34,497 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 11:26:34,498 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:34,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash 82160865, now seen corresponding path program 2 times [2019-10-22 11:26:34,498 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:34,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1136667541] [2019-10-22 11:26:34,499 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/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 11:26:36,215 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:26:36,215 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:26:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:38,312 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:26:38,312 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:38,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:38,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:38 BoogieIcfgContainer [2019-10-22 11:26:38,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:38,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:38,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:38,636 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:38,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:28" (3/4) ... [2019-10-22 11:26:38,641 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:38,746 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7ccb91c1-7033-4565-99b1-e0f076eb23ad/bin/utaipan/witness.graphml [2019-10-22 11:26:38,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:38,748 INFO L168 Benchmark]: Toolchain (without parser) took 11976.93 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 266.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -111.7 MB). Peak memory consumption was 154.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,748 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:38,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 509.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -119.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:38,751 INFO L168 Benchmark]: Boogie Preprocessor took 59.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,751 INFO L168 Benchmark]: RCFGBuilder took 839.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 991.5 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,752 INFO L168 Benchmark]: TraceAbstraction took 10378.49 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 180.9 MB). Free memory was 991.5 MB in the beginning and 1.1 GB in the end (delta: -90.7 MB). Peak memory consumption was 90.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,752 INFO L168 Benchmark]: Witness Printer took 110.32 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,753 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 509.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -119.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 839.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 991.5 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10378.49 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 180.9 MB). Free memory was 991.5 MB in the beginning and 1.1 GB in the end (delta: -90.7 MB). Peak memory consumption was 90.2 MB. Max. memory is 11.5 GB. * Witness Printer took 110.32 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L489] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L491] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L743] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L562] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L569] COND TRUE \read(systemActive) [L591] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L594] COND TRUE ! pumpRunning [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L933] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L625] int tmp ; [L650] int retValue_acc ; [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L619] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L489] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L491] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L743] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L562] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L569] COND TRUE \read(systemActive) [L591] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L44] int tmp ; [L45] int tmp___0 ; [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L489] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L491] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L743] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L562] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L569] COND TRUE \read(systemActive) [L591] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L44] int tmp ; [L45] int tmp___0 ; [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L752] __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, 89 locations, 3 error locations. Result: UNSAFE, OverallTime: 10.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1292 SDtfs, 3178 SDslu, 3259 SDs, 0 SdLazy, 568 SolverSat, 180 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 681 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=453occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 2449 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 57260 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1988 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 54/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...