./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23207c417a082958369bf4db5eb1238fd6945f9c ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23207c417a082958369bf4db5eb1238fd6945f9c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-22 13:03:57,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:03:57,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:03:57,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:03:57,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:03:57,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:03:57,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:03:57,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:03:57,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:03:57,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:03:57,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:03:57,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:03:57,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:03:57,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:03:57,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:03:57,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:03:57,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:03:57,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:03:57,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:03:57,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:03:57,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:03:57,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:03:57,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:03:57,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:03:57,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:03:57,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:03:57,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:03:57,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:03:57,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:03:57,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:03:57,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:03:57,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:03:57,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:03:57,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:03:57,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:03:57,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:03:57,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:03:57,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:03:57,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:03:57,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:03:57,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:03:57,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:03:57,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:03:57,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:03:57,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:03:57,211 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:03:57,212 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:03:57,212 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:03:57,212 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:03:57,212 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:03:57,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:03:57,213 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:03:57,213 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:03:57,214 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:03:57,214 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:03:57,214 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:03:57,214 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:03:57,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:03:57,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:03:57,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:03:57,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:03:57,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:03:57,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:03:57,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:03:57,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:03:57,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:03:57,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:03:57,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:03:57,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:03:57,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:03:57,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:03:57,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:03:57,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:03:57,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:57,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:03:57,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:03:57,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:03:57,219 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:03:57,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:03:57,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:03:57,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:03:57,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:03:57,220 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23207c417a082958369bf4db5eb1238fd6945f9c [2020-11-22 13:03:57,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:03:57,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:03:57,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:03:57,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:03:57,580 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:03:57,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2020-11-22 13:03:57,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data/cc22845ae/f225e7ded4734f0698db31025eb08f8b/FLAG72bce8d6f [2020-11-22 13:03:58,258 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:03:58,258 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2020-11-22 13:03:58,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data/cc22845ae/f225e7ded4734f0698db31025eb08f8b/FLAG72bce8d6f [2020-11-22 13:03:58,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data/cc22845ae/f225e7ded4734f0698db31025eb08f8b [2020-11-22 13:03:58,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:03:58,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:03:58,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:58,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:03:58,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:03:58,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:58" (1/1) ... [2020-11-22 13:03:58,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e1b4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:58, skipping insertion in model container [2020-11-22 13:03:58,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:58" (1/1) ... [2020-11-22 13:03:58,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:03:58,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:59,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:59,019 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) [2020-11-22 13:03:59,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31ed502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:59, skipping insertion in model container [2020-11-22 13:03:59,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:59,020 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:03:59,028 INFO L168 Benchmark]: Toolchain (without parser) took 399.91 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 69.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:59,029 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory was 50.7 MB in the beginning and 50.7 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:59,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.22 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 69.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:59,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory was 50.7 MB in the beginning and 50.7 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.22 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 69.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 472]: 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 0.2.0-a4ecdab [2020-11-22 13:04:01,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:04:01,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:04:01,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:04:01,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:04:01,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:04:01,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:04:01,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:04:01,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:04:01,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:04:01,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:04:01,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:04:01,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:04:01,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:04:01,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:04:01,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:04:01,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:04:01,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:04:01,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:04:01,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:04:01,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:04:01,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:04:01,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:04:01,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:04:01,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:04:01,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:04:01,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:04:01,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:04:01,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:04:01,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:04:01,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:04:01,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:04:01,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:04:01,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:04:01,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:04:01,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:04:01,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:04:01,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:04:01,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:04:01,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:04:01,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:04:01,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:04:01,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:04:01,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:04:01,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:04:01,361 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:04:01,361 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:04:01,361 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:04:01,361 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:04:01,362 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:04:01,362 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:04:01,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:04:01,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:04:01,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:04:01,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:04:01,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:04:01,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:04:01,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:04:01,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:04:01,364 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:04:01,364 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:04:01,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:04:01,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:04:01,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:04:01,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:04:01,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:04:01,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:04:01,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:04:01,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:04:01,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:04:01,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:04:01,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:04:01,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:04:01,367 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:04:01,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:04:01,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:04:01,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:04:01,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:04:01,375 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23207c417a082958369bf4db5eb1238fd6945f9c [2020-11-22 13:04:01,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:04:01,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:04:01,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:04:01,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:04:01,758 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:04:01,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2020-11-22 13:04:01,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data/4f6123f53/006a4a2ab550473a9623ae3c46785c7c/FLAGad3054374 [2020-11-22 13:04:02,463 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:04:02,464 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2020-11-22 13:04:02,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data/4f6123f53/006a4a2ab550473a9623ae3c46785c7c/FLAGad3054374 [2020-11-22 13:04:02,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/data/4f6123f53/006a4a2ab550473a9623ae3c46785c7c [2020-11-22 13:04:02,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:04:02,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:04:02,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:02,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:04:02,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:04:02,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:02" (1/1) ... [2020-11-22 13:04:02,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f7b6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:02, skipping insertion in model container [2020-11-22 13:04:02,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:02" (1/1) ... [2020-11-22 13:04:02,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:04:02,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:04:03,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:03,121 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:04:03,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:04:03,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:03,261 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:04:03,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:03,394 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:04:03,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03 WrapperNode [2020-11-22 13:04:03,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:03,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:03,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:04:03,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:04:03,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:03,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:04:03,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:04:03,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:04:03,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... [2020-11-22 13:04:03,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:04:03,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:04:03,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:04:03,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:04:03,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:04:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:04:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:04:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:04:05,938 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:04:05,941 INFO L298 CfgBuilder]: Removed 108 assume(true) statements. [2020-11-22 13:04:05,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:05 BoogieIcfgContainer [2020-11-22 13:04:05,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:04:05,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:04:05,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:04:05,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:04:05,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:04:02" (1/3) ... [2020-11-22 13:04:05,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1a4ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:05, skipping insertion in model container [2020-11-22 13:04:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:03" (2/3) ... [2020-11-22 13:04:05,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1a4ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:05, skipping insertion in model container [2020-11-22 13:04:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:05" (3/3) ... [2020-11-22 13:04:05,955 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-11-22 13:04:05,965 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:04:05,968 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 13:04:05,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 13:04:06,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:04:06,009 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:04:06,009 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:04:06,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:04:06,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:04:06,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:04:06,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:04:06,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:04:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-11-22 13:04:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:04:06,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:06,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:06,036 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:06,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1202040542, now seen corresponding path program 1 times [2020-11-22 13:04:06,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:06,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818364445] [2020-11-22 13:04:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:06,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:04:06,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:06,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:06,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818364445] [2020-11-22 13:04:06,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:06,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:04:06,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815569053] [2020-11-22 13:04:06,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:04:06,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:06,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:04:06,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:04:06,368 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2020-11-22 13:04:06,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:06,393 INFO L93 Difference]: Finished difference Result 157 states and 236 transitions. [2020-11-22 13:04:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:04:06,395 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-22 13:04:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:06,404 INFO L225 Difference]: With dead ends: 157 [2020-11-22 13:04:06,404 INFO L226 Difference]: Without dead ends: 76 [2020-11-22 13:04:06,407 INFO L677 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 [2020-11-22 13:04:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-22 13:04:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-22 13:04:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-22 13:04:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2020-11-22 13:04:06,446 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2020-11-22 13:04:06,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:06,447 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2020-11-22 13:04:06,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:04:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2020-11-22 13:04:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:04:06,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:06,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:06,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:04:06,672 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:06,673 INFO L82 PathProgramCache]: Analyzing trace with hash 155283645, now seen corresponding path program 1 times [2020-11-22 13:04:06,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:06,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576758761] [2020-11-22 13:04:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:06,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:04:06,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:06,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:06,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576758761] [2020-11-22 13:04:06,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:06,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:04:06,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059329354] [2020-11-22 13:04:06,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:04:06,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:04:06,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:04:06,916 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 4 states. [2020-11-22 13:04:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:06,940 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-11-22 13:04:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:04:06,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:04:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:06,944 INFO L225 Difference]: With dead ends: 76 [2020-11-22 13:04:06,944 INFO L226 Difference]: Without dead ends: 36 [2020-11-22 13:04:06,946 INFO L677 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 [2020-11-22 13:04:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-22 13:04:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-22 13:04:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-22 13:04:06,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-11-22 13:04:06,958 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2020-11-22 13:04:06,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:06,961 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-11-22 13:04:06,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:04:06,962 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2020-11-22 13:04:06,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:04:06,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:06,964 INFO L422 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] [2020-11-22 13:04:07,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:04:07,183 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:07,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1499295122, now seen corresponding path program 1 times [2020-11-22 13:04:07,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:07,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299387093] [2020-11-22 13:04:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:07,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:04:07,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:07,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:07,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299387093] [2020-11-22 13:04:07,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:07,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:04:07,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422418594] [2020-11-22 13:04:07,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:04:07,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:07,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:04:07,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:04:07,409 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 4 states. [2020-11-22 13:04:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:07,479 INFO L93 Difference]: Finished difference Result 119 states and 175 transitions. [2020-11-22 13:04:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:04:07,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-22 13:04:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:07,481 INFO L225 Difference]: With dead ends: 119 [2020-11-22 13:04:07,482 INFO L226 Difference]: Without dead ends: 89 [2020-11-22 13:04:07,482 INFO L677 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 [2020-11-22 13:04:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-22 13:04:07,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 55. [2020-11-22 13:04:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-22 13:04:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2020-11-22 13:04:07,503 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 22 [2020-11-22 13:04:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:07,503 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2020-11-22 13:04:07,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:04:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2020-11-22 13:04:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 13:04:07,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:07,505 INFO L422 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] [2020-11-22 13:04:07,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:04:07,705 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:07,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1870150441, now seen corresponding path program 1 times [2020-11-22 13:04:07,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:07,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864594370] [2020-11-22 13:04:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:07,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:04:07,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:07,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:07,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864594370] [2020-11-22 13:04:07,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:07,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:04:07,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338528103] [2020-11-22 13:04:07,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:04:07,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:07,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:04:07,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:04:07,926 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 3 states. [2020-11-22 13:04:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:08,008 INFO L93 Difference]: Finished difference Result 125 states and 184 transitions. [2020-11-22 13:04:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:04:08,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-22 13:04:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:08,010 INFO L225 Difference]: With dead ends: 125 [2020-11-22 13:04:08,010 INFO L226 Difference]: Without dead ends: 76 [2020-11-22 13:04:08,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:04:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-22 13:04:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-11-22 13:04:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-22 13:04:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-11-22 13:04:08,028 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 23 [2020-11-22 13:04:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:08,029 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-22 13:04:08,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:04:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-11-22 13:04:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 13:04:08,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:08,031 INFO L422 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] [2020-11-22 13:04:08,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:04:08,237 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:08,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:08,238 INFO L82 PathProgramCache]: Analyzing trace with hash 944519591, now seen corresponding path program 1 times [2020-11-22 13:04:08,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:08,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002688612] [2020-11-22 13:04:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:08,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:04:08,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:08,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:08,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002688612] [2020-11-22 13:04:08,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:08,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 13:04:08,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293690742] [2020-11-22 13:04:08,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:04:08,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:08,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:04:08,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:04:08,518 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 8 states. [2020-11-22 13:04:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:08,920 INFO L93 Difference]: Finished difference Result 507 states and 746 transitions. [2020-11-22 13:04:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 13:04:08,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-22 13:04:08,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:08,924 INFO L225 Difference]: With dead ends: 507 [2020-11-22 13:04:08,924 INFO L226 Difference]: Without dead ends: 439 [2020-11-22 13:04:08,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:04:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-11-22 13:04:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 189. [2020-11-22 13:04:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-22 13:04:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2020-11-22 13:04:08,970 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 25 [2020-11-22 13:04:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:08,970 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2020-11-22 13:04:08,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:04:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2020-11-22 13:04:08,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-22 13:04:08,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:08,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:09,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:04:09,195 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:09,195 INFO L82 PathProgramCache]: Analyzing trace with hash -545941251, now seen corresponding path program 1 times [2020-11-22 13:04:09,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:09,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368176804] [2020-11-22 13:04:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:09,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:04:09,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:09,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:09,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368176804] [2020-11-22 13:04:09,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780482470] [2020-11-22 13:04:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:04:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:09,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:04:09,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:04:09,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:04:09,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:04:09,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [4, 3] total 10 [2020-11-22 13:04:09,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565221137] [2020-11-22 13:04:09,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:04:09,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:04:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:04:09,791 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand 5 states. [2020-11-22 13:04:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:10,021 INFO L93 Difference]: Finished difference Result 429 states and 608 transitions. [2020-11-22 13:04:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:04:10,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-22 13:04:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:10,024 INFO L225 Difference]: With dead ends: 429 [2020-11-22 13:04:10,024 INFO L226 Difference]: Without dead ends: 427 [2020-11-22 13:04:10,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-11-22 13:04:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-11-22 13:04:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 189. [2020-11-22 13:04:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-22 13:04:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 261 transitions. [2020-11-22 13:04:10,061 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 261 transitions. Word has length 41 [2020-11-22 13:04:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:10,062 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 261 transitions. [2020-11-22 13:04:10,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:04:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 261 transitions. [2020-11-22 13:04:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-22 13:04:10,063 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:10,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:10,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:04:10,481 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:10,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1811443464, now seen corresponding path program 1 times [2020-11-22 13:04:10,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:10,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436234137] [2020-11-22 13:04:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:10,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:04:10,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:04:10,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:04:10,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436234137] [2020-11-22 13:04:10,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:10,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 13:04:10,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299493300] [2020-11-22 13:04:10,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:04:10,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:10,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:04:10,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:04:10,770 INFO L87 Difference]: Start difference. First operand 189 states and 261 transitions. Second operand 5 states. [2020-11-22 13:04:10,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:10,874 INFO L93 Difference]: Finished difference Result 566 states and 779 transitions. [2020-11-22 13:04:10,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:04:10,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-11-22 13:04:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:10,881 INFO L225 Difference]: With dead ends: 566 [2020-11-22 13:04:10,881 INFO L226 Difference]: Without dead ends: 383 [2020-11-22 13:04:10,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:04:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-11-22 13:04:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 198. [2020-11-22 13:04:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-22 13:04:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 270 transitions. [2020-11-22 13:04:10,923 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 270 transitions. Word has length 44 [2020-11-22 13:04:10,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:10,924 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 270 transitions. [2020-11-22 13:04:10,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:04:10,924 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 270 transitions. [2020-11-22 13:04:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-22 13:04:10,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:10,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:11,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 13:04:11,141 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:11,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:11,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1670894854, now seen corresponding path program 1 times [2020-11-22 13:04:11,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:11,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333246601] [2020-11-22 13:04:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:11,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 13:04:11,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:04:11,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:04:11,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333246601] [2020-11-22 13:04:11,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:11,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:04:11,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131502867] [2020-11-22 13:04:11,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:04:11,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:11,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:04:11,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:04:11,411 INFO L87 Difference]: Start difference. First operand 198 states and 270 transitions. Second operand 6 states. [2020-11-22 13:04:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:11,497 INFO L93 Difference]: Finished difference Result 530 states and 725 transitions. [2020-11-22 13:04:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:04:11,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-22 13:04:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:11,500 INFO L225 Difference]: With dead ends: 530 [2020-11-22 13:04:11,500 INFO L226 Difference]: Without dead ends: 338 [2020-11-22 13:04:11,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:04:11,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-11-22 13:04:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 177. [2020-11-22 13:04:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-22 13:04:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 238 transitions. [2020-11-22 13:04:11,531 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 238 transitions. Word has length 44 [2020-11-22 13:04:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:11,532 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 238 transitions. [2020-11-22 13:04:11,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:04:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 238 transitions. [2020-11-22 13:04:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-22 13:04:11,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:11,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:11,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-22 13:04:11,749 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1627348998, now seen corresponding path program 1 times [2020-11-22 13:04:11,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:11,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911584596] [2020-11-22 13:04:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/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 [2020-11-22 13:04:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:11,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:04:11,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:04:12,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:04:12,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911584596] [2020-11-22 13:04:12,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2017717886] [2020-11-22 13:04:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:04:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:12,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:04:12,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:04:12,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:04:12,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641421250] [2020-11-22 13:04:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:04:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:12,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:04:12,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:04:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:04:12,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:04:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:04:12,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-22 13:04:12,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2020-11-22 13:04:12,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191882452] [2020-11-22 13:04:12,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:04:12,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:04:12,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:04:12,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:04:12,480 INFO L87 Difference]: Start difference. First operand 177 states and 238 transitions. Second operand 10 states. [2020-11-22 13:04:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:13,386 INFO L93 Difference]: Finished difference Result 1044 states and 1457 transitions. [2020-11-22 13:04:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-22 13:04:13,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-11-22 13:04:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:13,392 INFO L225 Difference]: With dead ends: 1044 [2020-11-22 13:04:13,392 INFO L226 Difference]: Without dead ends: 914 [2020-11-22 13:04:13,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2020-11-22 13:04:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2020-11-22 13:04:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 294. [2020-11-22 13:04:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-11-22 13:04:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 402 transitions. [2020-11-22 13:04:13,443 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 402 transitions. Word has length 45 [2020-11-22 13:04:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:13,444 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 402 transitions. [2020-11-22 13:04:13,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:04:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 402 transitions. [2020-11-22 13:04:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-22 13:04:13,446 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:13,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:14,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3 [2020-11-22 13:04:14,049 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash -232463738, now seen corresponding path program 2 times [2020-11-22 13:04:14,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:04:14,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726864922] [2020-11-22 13:04:14,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-22 13:04:15,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-22 13:04:15,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-22 13:04:15,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:04:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:04:16,909 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:04:17,140 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:04:17,140 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:04:17,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-22 13:04:17,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:04:17 BoogieIcfgContainer [2020-11-22 13:04:17,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:04:17,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:04:17,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:04:17,603 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:04:17,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:05" (3/4) ... [2020-11-22 13:04:17,606 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:04:17,747 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7e75a8e1-47c3-4dc7-aeb6-050f32c60a9d/bin/utaipan/witness.graphml [2020-11-22 13:04:17,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:04:17,749 INFO L168 Benchmark]: Toolchain (without parser) took 15015.51 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 57.4 MB in the beginning and 59.0 MB in the end (delta: -1.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:17,749 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:17,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.83 ms. Allocated memory is still 73.4 MB. Free memory was 57.2 MB in the beginning and 43.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:17,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.39 ms. Allocated memory is still 73.4 MB. Free memory was 43.3 MB in the beginning and 40.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:17,751 INFO L168 Benchmark]: Boogie Preprocessor took 45.30 ms. Allocated memory is still 73.4 MB. Free memory was 40.3 MB in the beginning and 37.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:17,752 INFO L168 Benchmark]: RCFGBuilder took 2440.69 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 37.9 MB in the beginning and 46.0 MB in the end (delta: -8.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:17,752 INFO L168 Benchmark]: TraceAbstraction took 11655.27 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 46.0 MB in the beginning and 82.0 MB in the end (delta: -36.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:17,753 INFO L168 Benchmark]: Witness Printer took 144.12 ms. Allocated memory is still 107.0 MB. Free memory was 82.0 MB in the beginning and 59.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:17,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 661.83 ms. Allocated memory is still 73.4 MB. Free memory was 57.2 MB in the beginning and 43.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.39 ms. Allocated memory is still 73.4 MB. Free memory was 43.3 MB in the beginning and 40.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.30 ms. Allocated memory is still 73.4 MB. Free memory was 40.3 MB in the beginning and 37.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2440.69 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 37.9 MB in the beginning and 46.0 MB in the end (delta: -8.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11655.27 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 46.0 MB in the beginning and 82.0 MB in the end (delta: -36.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * Witness Printer took 144.12 ms. Allocated memory is still 107.0 MB. Free memory was 82.0 MB in the beginning and 59.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L125] int pumpRunning = 0; [L126] int systemActive = 1; [L301] int cleanupTimeShifts = 4; [L613] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L811] int waterLevel = 1; [L812] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L377] int retValue_acc ; [L378] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L426] int retValue_acc ; [L429] retValue_acc = 1 [L430] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L384] tmp = valid_product() [L386] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L829] COND TRUE waterLevel < 2 [L830] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L296] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND TRUE \read(systemActive) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND TRUE ! pumpRunning [L259] int retValue_acc ; [L260] int tmp ; [L261] int tmp___0 ; [L891] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L894] COND FALSE !(waterLevel < 2) [L898] retValue_acc = 0 [L899] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L265] tmp = isHighWaterSensorDry() [L267] COND FALSE !(\read(tmp)) [L270] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L272] retValue_acc = tmp___0 [L273] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] tmp = isHighWaterLevel() [L169] COND TRUE \read(tmp) [L190] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] int tmp ; [L907] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L911] tmp = getWaterLevel() [L913] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L296] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L817] COND TRUE waterLevel > 0 [L818] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(systemActive) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] int tmp ; [L907] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L911] tmp = getWaterLevel() [L913] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L296] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L817] COND TRUE waterLevel > 0 [L818] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] COND TRUE \read(systemActive) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] int tmp ; [L907] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L911] tmp = getWaterLevel() [L913] COND TRUE tmp == 0 [L214] int retValue_acc ; [L217] retValue_acc = pumpRunning [L218] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L915] tmp___0 = isPumpRunning() [L917] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product36.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 722 SDtfs, 1774 SDslu, 1797 SDs, 0 SdLazy, 325 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 831 GetRequests, 763 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1490 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 468 NumberOfCodeBlocks, 468 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 792 ConstructedInterpolants, 1 QuantifiedInterpolants, 88490 SizeOfPredicates, 27 NumberOfNonLiveVariables, 2557 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 24 InterpolantComputations, 16 PerfectInterpolantSequences, 136/200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...