./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/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 0d6f6f11832d8f580d186172cf5d58d3f276ea91 ...................................................................................................................................... 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/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/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 0d6f6f11832d8f580d186172cf5d58d3f276ea91 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 19:32:52,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:32:52,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:32:52,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:32:52,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:32:52,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:32:52,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:32:52,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:32:52,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:32:52,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:32:52,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:32:52,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:32:52,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:32:52,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:32:52,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:32:52,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:32:52,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:32:52,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:32:52,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:32:52,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:32:52,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:32:52,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:32:52,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:32:52,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:32:52,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:32:52,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:32:52,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:32:52,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:32:52,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:32:52,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:32:52,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:32:52,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:32:52,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:32:52,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:32:52,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:32:52,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:32:52,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:32:52,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:32:52,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:32:52,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:32:52,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:32:52,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:32:52,177 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:32:52,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:32:52,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:32:52,178 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:32:52,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:32:52,178 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:32:52,179 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:32:52,179 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:32:52,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:32:52,179 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:32:52,179 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:32:52,179 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:32:52,179 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:32:52,180 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:32:52,180 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:32:52,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:32:52,180 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:32:52,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:32:52,182 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:32:52,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:32:52,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:32:52,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:32:52,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:32:52,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:32:52,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:32:52,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:32:52,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:32:52,183 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:32:52,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:32:52,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:32:52,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:32:52,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:32:52,184 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/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/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 -> 0d6f6f11832d8f580d186172cf5d58d3f276ea91 [2019-12-07 19:32:52,296 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:32:52,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:32:52,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:32:52,312 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:32:52,312 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:32:52,313 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2019-12-07 19:32:52,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data/a114a30e9/c863c5f604e34c7fae8c71a6ebb2020c/FLAG7d6a70852 [2019-12-07 19:32:52,721 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:32:52,721 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2019-12-07 19:32:52,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data/a114a30e9/c863c5f604e34c7fae8c71a6ebb2020c/FLAG7d6a70852 [2019-12-07 19:32:52,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data/a114a30e9/c863c5f604e34c7fae8c71a6ebb2020c [2019-12-07 19:32:52,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:32:52,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:32:52,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:32:52,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:32:52,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:32:52,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:32:52" (1/1) ... [2019-12-07 19:32:52,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c28c768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:52, skipping insertion in model container [2019-12-07 19:32:52,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:32:52" (1/1) ... [2019-12-07 19:32:52,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:32:52,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:32:53,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:32:53,022 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2019-12-07 19:32:53,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21a44480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53, skipping insertion in model container [2019-12-07 19:32:53,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:32:53,023 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 19:32:53,025 INFO L168 Benchmark]: Toolchain (without parser) took 282.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -135.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:32:53,025 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:32:53,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -140.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 19:32:53,027 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 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 280.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -140.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 362]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 19:32:54,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:32:54,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:32:54,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:32:54,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:32:54,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:32:54,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:32:54,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:32:54,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:32:54,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:32:54,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:32:54,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:32:54,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:32:54,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:32:54,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:32:54,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:32:54,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:32:54,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:32:54,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:32:54,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:32:54,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:32:54,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:32:54,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:32:54,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:32:54,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:32:54,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:32:54,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:32:54,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:32:54,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:32:54,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:32:54,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:32:54,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:32:54,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:32:54,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:32:54,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:32:54,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:32:54,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:32:54,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:32:54,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:32:54,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:32:54,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:32:54,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 19:32:54,206 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:32:54,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:32:54,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:32:54,207 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:32:54,207 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:32:54,207 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:32:54,207 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:32:54,208 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:32:54,208 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:32:54,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:32:54,208 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:32:54,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:32:54,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:32:54,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:32:54,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:32:54,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:32:54,209 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:32:54,209 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 19:32:54,209 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 19:32:54,209 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:32:54,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:32:54,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:32:54,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:32:54,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:32:54,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 19:32:54,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:32:54,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:32:54,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:32:54,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:32:54,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:32:54,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:32:54,211 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 19:32:54,211 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 19:32:54,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:32:54,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:32:54,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:32:54,212 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/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/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 -> 0d6f6f11832d8f580d186172cf5d58d3f276ea91 [2019-12-07 19:32:54,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:32:54,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:32:54,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:32:54,384 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:32:54,384 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:32:54,385 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2019-12-07 19:32:54,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data/175f9e5e3/089637bf82a546dc95663b9901fa9955/FLAG9b4262b75 [2019-12-07 19:32:54,863 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:32:54,863 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2019-12-07 19:32:54,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data/175f9e5e3/089637bf82a546dc95663b9901fa9955/FLAG9b4262b75 [2019-12-07 19:32:55,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/data/175f9e5e3/089637bf82a546dc95663b9901fa9955 [2019-12-07 19:32:55,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:32:55,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:32:55,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:32:55,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:32:55,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:32:55,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9aca9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55, skipping insertion in model container [2019-12-07 19:32:55,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:32:55,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:32:55,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:32:55,475 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 19:32:55,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:32:55,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:32:55,525 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:32:55,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:32:55,586 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:32:55,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55 WrapperNode [2019-12-07 19:32:55,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:32:55,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:32:55,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:32:55,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:32:55,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:32:55,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:32:55,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:32:55,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:32:55,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... [2019-12-07 19:32:55,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:32:55,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:32:55,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:32:55,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:32:55,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/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 [2019-12-07 19:32:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:32:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-12-07 19:32:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:32:55,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:32:56,225 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:32:56,225 INFO L287 CfgBuilder]: Removed 160 assume(true) statements. [2019-12-07 19:32:56,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:56 BoogieIcfgContainer [2019-12-07 19:32:56,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:32:56,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:32:56,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:32:56,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:32:56,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:32:55" (1/3) ... [2019-12-07 19:32:56,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c490c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:32:56, skipping insertion in model container [2019-12-07 19:32:56,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:55" (2/3) ... [2019-12-07 19:32:56,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c490c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:32:56, skipping insertion in model container [2019-12-07 19:32:56,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:56" (3/3) ... [2019-12-07 19:32:56,232 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2019-12-07 19:32:56,238 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:32:56,244 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 19:32:56,252 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 19:32:56,268 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:32:56,269 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:32:56,269 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:32:56,269 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:32:56,269 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:32:56,269 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:32:56,269 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:32:56,269 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:32:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2019-12-07 19:32:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 19:32:56,286 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:56,286 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:56,286 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:56,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1844308238, now seen corresponding path program 1 times [2019-12-07 19:32:56,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:56,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278569759] [2019-12-07 19:32:56,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 19:32:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:56,443 INFO L264 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 19:32:56,447 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:56,457 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:56,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278569759] [2019-12-07 19:32:56,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:56,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 19:32:56,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119551094] [2019-12-07 19:32:56,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 19:32:56,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:32:56,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 19:32:56,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 19:32:56,480 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 2 states. [2019-12-07 19:32:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:56,505 INFO L93 Difference]: Finished difference Result 232 states and 353 transitions. [2019-12-07 19:32:56,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 19:32:56,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 19:32:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:56,517 INFO L225 Difference]: With dead ends: 232 [2019-12-07 19:32:56,518 INFO L226 Difference]: Without dead ends: 115 [2019-12-07 19:32:56,521 INFO L630 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 [2019-12-07 19:32:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-12-07 19:32:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-12-07 19:32:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-12-07 19:32:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2019-12-07 19:32:56,556 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2019-12-07 19:32:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:56,557 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2019-12-07 19:32:56,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 19:32:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2019-12-07 19:32:56,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 19:32:56,558 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:56,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:56,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 19:32:56,759 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:56,760 INFO L82 PathProgramCache]: Analyzing trace with hash -323074868, now seen corresponding path program 1 times [2019-12-07 19:32:56,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:56,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013019771] [2019-12-07 19:32:56,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 19:32:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:56,878 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 19:32:56,879 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:56,894 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:56,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013019771] [2019-12-07 19:32:56,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:56,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 19:32:56,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302685145] [2019-12-07 19:32:56,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:32:56,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:32:56,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:32:56,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:32:56,906 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 4 states. [2019-12-07 19:32:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:56,920 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2019-12-07 19:32:56,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:32:56,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-12-07 19:32:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:56,922 INFO L225 Difference]: With dead ends: 115 [2019-12-07 19:32:56,922 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 19:32:56,923 INFO L630 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 [2019-12-07 19:32:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 19:32:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-12-07 19:32:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-12-07 19:32:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2019-12-07 19:32:56,930 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2019-12-07 19:32:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:56,930 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2019-12-07 19:32:56,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:32:56,930 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2019-12-07 19:32:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 19:32:56,931 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:56,931 INFO L410 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] [2019-12-07 19:32:57,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 19:32:57,132 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:57,133 INFO L82 PathProgramCache]: Analyzing trace with hash -426243093, now seen corresponding path program 1 times [2019-12-07 19:32:57,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:57,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590953850] [2019-12-07 19:32:57,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 19:32:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:57,362 INFO L264 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 19:32:57,363 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:57,373 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:57,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590953850] [2019-12-07 19:32:57,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:57,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-12-07 19:32:57,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042923351] [2019-12-07 19:32:57,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:32:57,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:32:57,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:32:57,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:32:57,383 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 4 states. [2019-12-07 19:32:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:57,401 INFO L93 Difference]: Finished difference Result 158 states and 235 transitions. [2019-12-07 19:32:57,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:32:57,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-12-07 19:32:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:57,403 INFO L225 Difference]: With dead ends: 158 [2019-12-07 19:32:57,403 INFO L226 Difference]: Without dead ends: 115 [2019-12-07 19:32:57,404 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:32:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-12-07 19:32:57,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 68. [2019-12-07 19:32:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-07 19:32:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2019-12-07 19:32:57,413 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 22 [2019-12-07 19:32:57,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:57,413 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2019-12-07 19:32:57,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:32:57,413 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2019-12-07 19:32:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 19:32:57,414 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:57,414 INFO L410 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] [2019-12-07 19:32:57,614 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 19:32:57,615 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:57,616 INFO L82 PathProgramCache]: Analyzing trace with hash 844046893, now seen corresponding path program 1 times [2019-12-07 19:32:57,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:57,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932874167] [2019-12-07 19:32:57,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 19:32:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:57,865 INFO L264 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 19:32:57,866 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:57,872 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:57,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932874167] [2019-12-07 19:32:57,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:57,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 19:32:57,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819124660] [2019-12-07 19:32:57,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:32:57,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:32:57,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:32:57,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:32:57,876 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2019-12-07 19:32:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:57,935 INFO L93 Difference]: Finished difference Result 151 states and 224 transitions. [2019-12-07 19:32:57,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:32:57,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 19:32:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:57,936 INFO L225 Difference]: With dead ends: 151 [2019-12-07 19:32:57,936 INFO L226 Difference]: Without dead ends: 89 [2019-12-07 19:32:57,937 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:32:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-12-07 19:32:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2019-12-07 19:32:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-12-07 19:32:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2019-12-07 19:32:57,945 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 24 [2019-12-07 19:32:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:57,945 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2019-12-07 19:32:57,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:32:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2019-12-07 19:32:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 19:32:57,946 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:57,946 INFO L410 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] [2019-12-07 19:32:58,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 19:32:58,148 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:58,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1604149312, now seen corresponding path program 1 times [2019-12-07 19:32:58,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:58,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467682165] [2019-12-07 19:32:58,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 19:32:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:58,313 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:32:58,314 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:58,325 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:58,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467682165] [2019-12-07 19:32:58,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:58,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 19:32:58,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154971952] [2019-12-07 19:32:58,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:32:58,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:32:58,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:32:58,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:32:58,332 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand 5 states. [2019-12-07 19:32:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:58,396 INFO L93 Difference]: Finished difference Result 445 states and 650 transitions. [2019-12-07 19:32:58,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 19:32:58,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-12-07 19:32:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:58,400 INFO L225 Difference]: With dead ends: 445 [2019-12-07 19:32:58,400 INFO L226 Difference]: Without dead ends: 364 [2019-12-07 19:32:58,401 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 19:32:58,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2019-12-07 19:32:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 160. [2019-12-07 19:32:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-12-07 19:32:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 226 transitions. [2019-12-07 19:32:58,424 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 226 transitions. Word has length 25 [2019-12-07 19:32:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:58,424 INFO L462 AbstractCegarLoop]: Abstraction has 160 states and 226 transitions. [2019-12-07 19:32:58,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:32:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 226 transitions. [2019-12-07 19:32:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 19:32:58,426 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:58,426 INFO L410 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] [2019-12-07 19:32:58,626 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 19:32:58,627 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:58,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:58,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1807956406, now seen corresponding path program 1 times [2019-12-07 19:32:58,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:58,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279087750] [2019-12-07 19:32:58,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 19:32:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:58,726 INFO L264 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:32:58,727 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:58,740 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:58,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279087750] [2019-12-07 19:32:58,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:58,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 19:32:58,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391333335] [2019-12-07 19:32:58,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:32:58,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:32:58,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:32:58,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:32:58,746 INFO L87 Difference]: Start difference. First operand 160 states and 226 transitions. Second operand 5 states. [2019-12-07 19:32:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:58,898 INFO L93 Difference]: Finished difference Result 448 states and 637 transitions. [2019-12-07 19:32:58,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 19:32:58,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-12-07 19:32:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:58,901 INFO L225 Difference]: With dead ends: 448 [2019-12-07 19:32:58,901 INFO L226 Difference]: Without dead ends: 446 [2019-12-07 19:32:58,902 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 19:32:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2019-12-07 19:32:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 160. [2019-12-07 19:32:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-12-07 19:32:58,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 224 transitions. [2019-12-07 19:32:58,919 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 224 transitions. Word has length 26 [2019-12-07 19:32:58,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:58,919 INFO L462 AbstractCegarLoop]: Abstraction has 160 states and 224 transitions. [2019-12-07 19:32:58,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:32:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 224 transitions. [2019-12-07 19:32:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 19:32:58,920 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:58,920 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:59,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 19:32:59,123 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:59,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:59,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1131451540, now seen corresponding path program 1 times [2019-12-07 19:32:59,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:59,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670321256] [2019-12-07 19:32:59,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 19:32:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:59,209 INFO L264 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:32:59,210 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:59,222 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:59,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670321256] [2019-12-07 19:32:59,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:59,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 19:32:59,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773067340] [2019-12-07 19:32:59,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:32:59,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:32:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:32:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:32:59,227 INFO L87 Difference]: Start difference. First operand 160 states and 224 transitions. Second operand 5 states. [2019-12-07 19:32:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:59,290 INFO L93 Difference]: Finished difference Result 476 states and 660 transitions. [2019-12-07 19:32:59,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:32:59,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-07 19:32:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:59,293 INFO L225 Difference]: With dead ends: 476 [2019-12-07 19:32:59,293 INFO L226 Difference]: Without dead ends: 322 [2019-12-07 19:32:59,294 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 19:32:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-12-07 19:32:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 172. [2019-12-07 19:32:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-07 19:32:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 236 transitions. [2019-12-07 19:32:59,312 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 236 transitions. Word has length 31 [2019-12-07 19:32:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:59,313 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 236 transitions. [2019-12-07 19:32:59,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:32:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 236 transitions. [2019-12-07 19:32:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 19:32:59,314 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:59,314 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:59,515 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 19:32:59,516 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:59,517 INFO L82 PathProgramCache]: Analyzing trace with hash 738424530, now seen corresponding path program 1 times [2019-12-07 19:32:59,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:59,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374785930] [2019-12-07 19:32:59,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 19:32:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:59,695 INFO L264 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 19:32:59,697 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:59,705 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:59,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374785930] [2019-12-07 19:32:59,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:59,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 19:32:59,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775403540] [2019-12-07 19:32:59,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 19:32:59,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:32:59,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 19:32:59,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:32:59,715 INFO L87 Difference]: Start difference. First operand 172 states and 236 transitions. Second operand 6 states. [2019-12-07 19:32:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:59,761 INFO L93 Difference]: Finished difference Result 510 states and 694 transitions. [2019-12-07 19:32:59,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 19:32:59,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-12-07 19:32:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:59,763 INFO L225 Difference]: With dead ends: 510 [2019-12-07 19:32:59,763 INFO L226 Difference]: Without dead ends: 344 [2019-12-07 19:32:59,763 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 19:32:59,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2019-12-07 19:32:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 180. [2019-12-07 19:32:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-12-07 19:32:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 244 transitions. [2019-12-07 19:32:59,774 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 244 transitions. Word has length 31 [2019-12-07 19:32:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:59,775 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 244 transitions. [2019-12-07 19:32:59,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 19:32:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 244 transitions. [2019-12-07 19:32:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 19:32:59,775 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:59,775 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:59,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 19:32:59,976 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:59,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:59,976 INFO L82 PathProgramCache]: Analyzing trace with hash 996589968, now seen corresponding path program 1 times [2019-12-07 19:32:59,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:32:59,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753002463] [2019-12-07 19:32:59,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 19:33:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:33:00,066 INFO L264 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 19:33:00,067 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:33:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:33:00,073 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:33:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:33:00,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753002463] [2019-12-07 19:33:00,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:33:00,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-12-07 19:33:00,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322027686] [2019-12-07 19:33:00,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:33:00,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:33:00,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:33:00,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:33:00,081 INFO L87 Difference]: Start difference. First operand 180 states and 244 transitions. Second operand 4 states. [2019-12-07 19:33:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:33:00,144 INFO L93 Difference]: Finished difference Result 588 states and 800 transitions. [2019-12-07 19:33:00,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:33:00,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-12-07 19:33:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:33:00,146 INFO L225 Difference]: With dead ends: 588 [2019-12-07 19:33:00,146 INFO L226 Difference]: Without dead ends: 414 [2019-12-07 19:33:00,147 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:33:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-12-07 19:33:00,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 324. [2019-12-07 19:33:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-12-07 19:33:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 435 transitions. [2019-12-07 19:33:00,164 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 435 transitions. Word has length 31 [2019-12-07 19:33:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:33:00,164 INFO L462 AbstractCegarLoop]: Abstraction has 324 states and 435 transitions. [2019-12-07 19:33:00,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:33:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 435 transitions. [2019-12-07 19:33:00,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 19:33:00,165 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:33:00,165 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:33:00,365 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-12-07 19:33:00,366 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:33:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:33:00,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1116169902, now seen corresponding path program 1 times [2019-12-07 19:33:00,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:33:00,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113786281] [2019-12-07 19:33:00,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2019-12-07 19:33:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:33:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:33:01,842 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 19:33:01,842 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:33:02,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-12-07 19:33:02,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:33:02 BoogieIcfgContainer [2019-12-07 19:33:02,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:33:02,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:33:02,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:33:02,141 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:33:02,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:56" (3/4) ... [2019-12-07 19:33:02,142 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 19:33:02,200 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8a5c5f35-bb11-499a-b4d5-a178e0b278ce/bin/utaipan/witness.graphml [2019-12-07 19:33:02,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:33:02,201 INFO L168 Benchmark]: Toolchain (without parser) took 6989.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Free memory was 947.0 MB in the beginning and 927.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 220.2 MB. Max. memory is 11.5 GB. [2019-12-07 19:33:02,202 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:33:02,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:33:02,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:33:02,202 INFO L168 Benchmark]: Boogie Preprocessor took 32.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:33:02,203 INFO L168 Benchmark]: RCFGBuilder took 560.84 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: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:33:02,203 INFO L168 Benchmark]: TraceAbstraction took 5913.17 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.0 GB in the beginning and 942.7 MB in the end (delta: 80.3 MB). Peak memory consumption was 154.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:33:02,203 INFO L168 Benchmark]: Witness Printer took 59.76 ms. Allocated memory is still 1.2 GB. Free memory was 942.7 MB in the beginning and 927.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-12-07 19:33:02,205 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 372.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 560.84 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: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5913.17 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.0 GB in the beginning and 942.7 MB in the end (delta: 80.3 MB). Peak memory consumption was 154.3 MB. Max. memory is 11.5 GB. * Witness Printer took 59.76 ms. Allocated memory is still 1.2 GB. Free memory was 942.7 MB in the beginning and 927.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 704]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L121] int pumpRunning = 0; [L122] int systemActive = 1; [L503] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L773] int cleanupTimeShifts = 4; [L870] int waterLevel = 1; [L871] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L846] int retValue_acc ; [L847] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L738] int retValue_acc ; [L741] retValue_acc = 1 [L742] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L853] tmp = valid_product() [L855] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L55] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L888] COND TRUE waterLevel < 2 [L889] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L900] COND FALSE !(\read(methaneLevelCritical)) [L903] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L129] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L136] COND TRUE \read(systemActive) [L184] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L187] COND FALSE !(\read(pumpRunning)) [L158] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L161] COND TRUE ! pumpRunning [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L950] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L953] COND FALSE !(waterLevel < 2) [L957] retValue_acc = 0 [L958] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L163] tmp = isHighWaterLevel() [L165] COND TRUE \read(tmp) [L212] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L748] int tmp ; [L749] int tmp___0 ; [L909] int retValue_acc ; [L912] retValue_acc = methaneLevelCritical [L913] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L753] tmp = isMethaneLevelCritical() [L755] COND TRUE \read(tmp) [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L757] tmp___0 = isPumpRunning() [L759] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L704] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 3 error locations. Result: UNSAFE, OverallTime: 5.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 890 SDtfs, 1241 SDslu, 1434 SDs, 0 SdLazy, 166 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 943 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 20269 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1684 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...