./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product44.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_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 d4eb13f545cea9ac583f40da9d0bc0269dc50786 ............................................................................................................................................ 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_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 d4eb13f545cea9ac583f40da9d0bc0269dc50786 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:57:08,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:08,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:08,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:08,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:08,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:08,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:08,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:08,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:08,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:08,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:08,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:08,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:08,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:08,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:08,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:08,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:08,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:08,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:08,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:08,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:08,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:08,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:08,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:08,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:08,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:08,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:08,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:08,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:08,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:08,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:08,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:08,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:08,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:08,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:08,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:08,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:08,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:08,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:09,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:09,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:09,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:09,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:09,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:09,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:09,033 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:09,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:09,034 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:09,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:09,034 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:09,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:09,035 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:09,035 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:09,035 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:09,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:09,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:09,036 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:09,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:09,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:09,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:09,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:09,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:09,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:09,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:09,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:09,039 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:09,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:09,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:09,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:09,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:09,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:09,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:09,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:09,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:09,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:09,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:09,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:09,042 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:09,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:09,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:09,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:09,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:09,043 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_9d244a67-67c4-48ae-8948-fedbb05ea064/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4eb13f545cea9ac583f40da9d0bc0269dc50786 [2020-11-22 12:57:09,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:09,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:09,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:09,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:09,324 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:09,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2020-11-22 12:57:09,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data/58d5ec17a/e726b627ff46447db2a92fbb69fbd023/FLAG3332ee948 [2020-11-22 12:57:09,919 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:09,920 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2020-11-22 12:57:09,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data/58d5ec17a/e726b627ff46447db2a92fbb69fbd023/FLAG3332ee948 [2020-11-22 12:57:10,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data/58d5ec17a/e726b627ff46447db2a92fbb69fbd023 [2020-11-22 12:57:10,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:10,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:10,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:10,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:10,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:10,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:10" (1/1) ... [2020-11-22 12:57:10,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f870fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:10, skipping insertion in model container [2020-11-22 12:57:10,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:10" (1/1) ... [2020-11-22 12:57:10,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:10,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:10,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:10,635 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 12:57:10,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f59568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:10, skipping insertion in model container [2020-11-22 12:57:10,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:10,637 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 12:57:10,639 INFO L168 Benchmark]: Toolchain (without parser) took 371.67 ms. Allocated memory is still 88.1 MB. Free memory was 55.3 MB in the beginning and 62.7 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:10,640 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 46.3 MB in the beginning and 46.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:10,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.05 ms. Allocated memory is still 88.1 MB. Free memory was 55.1 MB in the beginning and 63.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:10,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 46.3 MB in the beginning and 46.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.05 ms. Allocated memory is still 88.1 MB. Free memory was 55.1 MB in the beginning and 63.1 MB in the end (delta: -8.0 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: 79]: 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 12:57:13,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:13,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:13,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:13,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:13,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:13,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:13,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:13,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:13,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:13,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:13,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:13,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:13,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:13,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:13,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:13,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:13,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:13,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:13,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:13,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:13,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:13,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:13,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:13,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:13,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:13,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:13,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:13,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:13,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:13,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:13,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:13,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:13,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:13,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:13,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:13,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:13,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:13,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:13,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:13,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:13,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:57:13,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:13,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:13,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:13,328 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:13,328 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:13,328 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:13,328 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:13,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:13,329 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:13,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:13,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:13,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:13,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:13,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:13,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:13,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:13,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:13,332 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:57:13,332 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:57:13,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:13,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:13,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:13,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:13,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:13,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:57:13,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:13,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:13,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:13,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:13,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:13,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:13,336 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:57:13,336 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:57:13,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:13,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:13,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:13,337 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_9d244a67-67c4-48ae-8948-fedbb05ea064/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4eb13f545cea9ac583f40da9d0bc0269dc50786 [2020-11-22 12:57:13,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:13,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:13,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:13,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:13,758 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:13,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2020-11-22 12:57:13,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data/fb321bb91/cf01426472284bc38028e1d776e9a8c3/FLAG5adfee3e3 [2020-11-22 12:57:14,556 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:14,557 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2020-11-22 12:57:14,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data/fb321bb91/cf01426472284bc38028e1d776e9a8c3/FLAG5adfee3e3 [2020-11-22 12:57:14,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/data/fb321bb91/cf01426472284bc38028e1d776e9a8c3 [2020-11-22 12:57:14,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:14,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:14,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:14,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:14,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:14,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:14,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5edead41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14, skipping insertion in model container [2020-11-22 12:57:14,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:14,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:14,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:15,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:15,413 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 12:57:15,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:15,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:15,563 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:15,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:15,691 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:15,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15 WrapperNode [2020-11-22 12:57:15,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:15,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:15,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:15,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:15,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:15,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:15,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:15,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:15,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... [2020-11-22 12:57:15,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:15,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:15,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:15,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:15,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:57:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:18,455 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:18,466 INFO L298 CfgBuilder]: Removed 126 assume(true) statements. [2020-11-22 12:57:18,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:18 BoogieIcfgContainer [2020-11-22 12:57:18,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:18,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:18,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:18,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:18,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:14" (1/3) ... [2020-11-22 12:57:18,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350300c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:18, skipping insertion in model container [2020-11-22 12:57:18,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:15" (2/3) ... [2020-11-22 12:57:18,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350300c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:18, skipping insertion in model container [2020-11-22 12:57:18,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:18" (3/3) ... [2020-11-22 12:57:18,497 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-11-22 12:57:18,508 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:18,518 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 12:57:18,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 12:57:18,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:18,579 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:18,579 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:18,580 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:18,580 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:18,580 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:18,580 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:18,580 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-11-22 12:57:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:57:18,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:18,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:18,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:18,604 INFO L82 PathProgramCache]: Analyzing trace with hash -807964332, now seen corresponding path program 1 times [2020-11-22 12:57:18,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:18,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642406327] [2020-11-22 12:57:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:18,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:57:18,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:18,943 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 12:57:18,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:18,949 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 12:57:18,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642406327] [2020-11-22 12:57:18,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:18,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:57:18,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275007376] [2020-11-22 12:57:18,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:57:18,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:18,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:57:18,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:18,971 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states. [2020-11-22 12:57:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:19,000 INFO L93 Difference]: Finished difference Result 175 states and 260 transitions. [2020-11-22 12:57:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:57:19,001 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-22 12:57:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:19,012 INFO L225 Difference]: With dead ends: 175 [2020-11-22 12:57:19,012 INFO L226 Difference]: Without dead ends: 85 [2020-11-22 12:57:19,015 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 12:57:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-22 12:57:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-22 12:57:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-22 12:57:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2020-11-22 12:57:19,054 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2020-11-22 12:57:19,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:19,055 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2020-11-22 12:57:19,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:57:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2020-11-22 12:57:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:57:19,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:19,056 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 12:57:19,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:57:19,277 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:19,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:19,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1854721229, now seen corresponding path program 1 times [2020-11-22 12:57:19,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:19,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862347320] [2020-11-22 12:57:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:19,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:19,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:19,577 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 12:57:19,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:19,596 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 12:57:19,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862347320] [2020-11-22 12:57:19,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:19,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:57:19,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858170700] [2020-11-22 12:57:19,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:19,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:19,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:19,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:19,599 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 4 states. [2020-11-22 12:57:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:19,619 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2020-11-22 12:57:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:19,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:57:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:19,624 INFO L225 Difference]: With dead ends: 85 [2020-11-22 12:57:19,624 INFO L226 Difference]: Without dead ends: 39 [2020-11-22 12:57:19,625 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 12:57:19,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-22 12:57:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-22 12:57:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-22 12:57:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-11-22 12:57:19,640 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2020-11-22 12:57:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:19,641 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-11-22 12:57:19,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:19,641 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-11-22 12:57:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:57:19,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:19,642 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 12:57:19,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:57:19,843 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:19,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1297648259, now seen corresponding path program 1 times [2020-11-22 12:57:19,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:19,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224845013] [2020-11-22 12:57:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:20,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:20,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:20,097 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 12:57:20,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:20,111 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 12:57:20,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224845013] [2020-11-22 12:57:20,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:20,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:57:20,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934820605] [2020-11-22 12:57:20,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:20,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:20,113 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 4 states. [2020-11-22 12:57:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:20,187 INFO L93 Difference]: Finished difference Result 128 states and 187 transitions. [2020-11-22 12:57:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:20,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-22 12:57:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:20,192 INFO L225 Difference]: With dead ends: 128 [2020-11-22 12:57:20,192 INFO L226 Difference]: Without dead ends: 95 [2020-11-22 12:57:20,192 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 12:57:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-22 12:57:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 58. [2020-11-22 12:57:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-22 12:57:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2020-11-22 12:57:20,210 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 22 [2020-11-22 12:57:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:20,210 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2020-11-22 12:57:20,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2020-11-22 12:57:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 12:57:20,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:20,213 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 12:57:20,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:57:20,418 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash -372126526, now seen corresponding path program 1 times [2020-11-22 12:57:20,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:20,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082345936] [2020-11-22 12:57:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:20,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:20,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:20,677 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 12:57:20,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:20,680 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 12:57:20,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082345936] [2020-11-22 12:57:20,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:20,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:57:20,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145112998] [2020-11-22 12:57:20,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:20,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:20,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:20,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:20,682 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand 3 states. [2020-11-22 12:57:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:20,744 INFO L93 Difference]: Finished difference Result 131 states and 192 transitions. [2020-11-22 12:57:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:20,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-22 12:57:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:20,747 INFO L225 Difference]: With dead ends: 131 [2020-11-22 12:57:20,747 INFO L226 Difference]: Without dead ends: 79 [2020-11-22 12:57:20,748 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 12:57:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-22 12:57:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-11-22 12:57:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-22 12:57:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2020-11-22 12:57:20,764 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 23 [2020-11-22 12:57:20,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:20,764 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2020-11-22 12:57:20,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2020-11-22 12:57:20,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 12:57:20,766 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:20,766 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 12:57:20,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:57:20,979 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1852423790, now seen corresponding path program 1 times [2020-11-22 12:57:20,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:20,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463146851] [2020-11-22 12:57:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:57:21,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:21,262 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 12:57:21,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:21,275 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 12:57:21,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463146851] [2020-11-22 12:57:21,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 12:57:21,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032388040] [2020-11-22 12:57:21,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:21,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:21,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:21,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:21,277 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand 5 states. [2020-11-22 12:57:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:21,419 INFO L93 Difference]: Finished difference Result 371 states and 539 transitions. [2020-11-22 12:57:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:57:21,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-22 12:57:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:21,423 INFO L225 Difference]: With dead ends: 371 [2020-11-22 12:57:21,423 INFO L226 Difference]: Without dead ends: 300 [2020-11-22 12:57:21,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-11-22 12:57:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 140. [2020-11-22 12:57:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-22 12:57:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 196 transitions. [2020-11-22 12:57:21,457 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 196 transitions. Word has length 25 [2020-11-22 12:57:21,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:21,457 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 196 transitions. [2020-11-22 12:57:21,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 196 transitions. [2020-11-22 12:57:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-22 12:57:21,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,476 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, 1] [2020-11-22 12:57:21,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:57:21,690 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:21,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:21,690 INFO L82 PathProgramCache]: Analyzing trace with hash -2056230884, now seen corresponding path program 1 times [2020-11-22 12:57:21,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:21,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887330213] [2020-11-22 12:57:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:57:21,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:21,941 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 12:57:21,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:21,946 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 12:57:21,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887330213] [2020-11-22 12:57:21,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 12:57:21,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115274994] [2020-11-22 12:57:21,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:21,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:21,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:21,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:21,949 INFO L87 Difference]: Start difference. First operand 140 states and 196 transitions. Second operand 5 states. [2020-11-22 12:57:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,179 INFO L93 Difference]: Finished difference Result 392 states and 553 transitions. [2020-11-22 12:57:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:57:22,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-22 12:57:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,183 INFO L225 Difference]: With dead ends: 392 [2020-11-22 12:57:22,183 INFO L226 Difference]: Without dead ends: 390 [2020-11-22 12:57:22,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-11-22 12:57:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 140. [2020-11-22 12:57:22,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-22 12:57:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-11-22 12:57:22,227 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 26 [2020-11-22 12:57:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,228 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-11-22 12:57:22,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-11-22 12:57:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-22 12:57:22,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,235 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:22,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 12:57:22,452 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,452 INFO L82 PathProgramCache]: Analyzing trace with hash 437867349, now seen corresponding path program 1 times [2020-11-22 12:57:22,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:22,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71604633] [2020-11-22 12:57:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:57:22,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:22,726 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 12:57:22,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:22,736 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 12:57:22,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71604633] [2020-11-22 12:57:22,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 12:57:22,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044641449] [2020-11-22 12:57:22,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:22,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:22,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:22,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:22,739 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 5 states. [2020-11-22 12:57:22,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,840 INFO L93 Difference]: Finished difference Result 426 states and 588 transitions. [2020-11-22 12:57:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:22,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-11-22 12:57:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,843 INFO L225 Difference]: With dead ends: 426 [2020-11-22 12:57:22,843 INFO L226 Difference]: Without dead ends: 292 [2020-11-22 12:57:22,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 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 12:57:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-11-22 12:57:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 146. [2020-11-22 12:57:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-22 12:57:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 200 transitions. [2020-11-22 12:57:22,881 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 200 transitions. Word has length 33 [2020-11-22 12:57:22,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,883 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 200 transitions. [2020-11-22 12:57:22,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 200 transitions. [2020-11-22 12:57:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-22 12:57:22,888 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,889 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:23,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 12:57:23,097 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,097 INFO L82 PathProgramCache]: Analyzing trace with hash -148938665, now seen corresponding path program 1 times [2020-11-22 12:57:23,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:23,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921880350] [2020-11-22 12:57:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:23,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:57:23,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:23,315 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 12:57:23,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:23,332 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 12:57:23,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921880350] [2020-11-22 12:57:23,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:23,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:57:23,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165908363] [2020-11-22 12:57:23,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:23,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:23,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:23,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:23,334 INFO L87 Difference]: Start difference. First operand 146 states and 200 transitions. Second operand 6 states. [2020-11-22 12:57:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,438 INFO L93 Difference]: Finished difference Result 444 states and 606 transitions. [2020-11-22 12:57:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:23,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-11-22 12:57:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,441 INFO L225 Difference]: With dead ends: 444 [2020-11-22 12:57:23,442 INFO L226 Difference]: Without dead ends: 304 [2020-11-22 12:57:23,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 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 12:57:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-11-22 12:57:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 150. [2020-11-22 12:57:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-22 12:57:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 204 transitions. [2020-11-22 12:57:23,477 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 204 transitions. Word has length 33 [2020-11-22 12:57:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:23,478 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 204 transitions. [2020-11-22 12:57:23,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 204 transitions. [2020-11-22 12:57:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-22 12:57:23,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:23,479 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:23,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 12:57:23,697 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1428802343, now seen corresponding path program 1 times [2020-11-22 12:57:23,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:23,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181702288] [2020-11-22 12:57:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:23,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:23,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:23,870 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 12:57:23,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:23,881 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 12:57:23,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181702288] [2020-11-22 12:57:23,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:23,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-22 12:57:23,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46160716] [2020-11-22 12:57:23,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:23,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:23,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:23,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:23,883 INFO L87 Difference]: Start difference. First operand 150 states and 204 transitions. Second operand 4 states. [2020-11-22 12:57:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,984 INFO L93 Difference]: Finished difference Result 504 states and 688 transitions. [2020-11-22 12:57:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:23,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-22 12:57:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,987 INFO L225 Difference]: With dead ends: 504 [2020-11-22 12:57:23,987 INFO L226 Difference]: Without dead ends: 360 [2020-11-22 12:57:23,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 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 12:57:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-11-22 12:57:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 272. [2020-11-22 12:57:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-11-22 12:57:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 367 transitions. [2020-11-22 12:57:24,026 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 367 transitions. Word has length 33 [2020-11-22 12:57:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:24,027 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 367 transitions. [2020-11-22 12:57:24,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 367 transitions. [2020-11-22 12:57:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-22 12:57:24,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:24,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:24,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-22 12:57:24,245 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:24,246 INFO L82 PathProgramCache]: Analyzing trace with hash -271506405, now seen corresponding path program 1 times [2020-11-22 12:57:24,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:24,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431417329] [2020-11-22 12:57:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/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 12:57:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:24,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:57:24,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:24,482 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 12:57:24,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:24,526 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 12:57:24,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431417329] [2020-11-22 12:57:24,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:24,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 12:57:24,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907617282] [2020-11-22 12:57:24,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:57:24,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:24,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:57:24,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:57:24,528 INFO L87 Difference]: Start difference. First operand 272 states and 367 transitions. Second operand 10 states. [2020-11-22 12:57:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:26,737 INFO L93 Difference]: Finished difference Result 1200 states and 1600 transitions. [2020-11-22 12:57:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-22 12:57:26,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-11-22 12:57:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:26,745 INFO L225 Difference]: With dead ends: 1200 [2020-11-22 12:57:26,745 INFO L226 Difference]: Without dead ends: 934 [2020-11-22 12:57:26,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-11-22 12:57:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-11-22 12:57:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 272. [2020-11-22 12:57:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-11-22 12:57:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 360 transitions. [2020-11-22 12:57:26,821 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 360 transitions. Word has length 34 [2020-11-22 12:57:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:26,821 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 360 transitions. [2020-11-22 12:57:26,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:57:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 360 transitions. [2020-11-22 12:57:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-22 12:57:26,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:26,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:27,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-22 12:57:27,038 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:27,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1089805871, now seen corresponding path program 1 times [2020-11-22 12:57:27,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:27,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877717250] [2020-11-22 12:57:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:28,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:29,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:29,342 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:57:29,343 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:57:29,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-22 12:57:29,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:29 BoogieIcfgContainer [2020-11-22 12:57:29,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:29,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:29,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:29,736 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:29,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:18" (3/4) ... [2020-11-22 12:57:29,739 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:57:29,898 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9d244a67-67c4-48ae-8948-fedbb05ea064/bin/utaipan/witness.graphml [2020-11-22 12:57:29,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:29,900 INFO L168 Benchmark]: Toolchain (without parser) took 15115.18 ms. Allocated memory was 50.3 MB in the beginning and 113.2 MB in the end (delta: 62.9 MB). Free memory was 27.2 MB in the beginning and 49.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,900 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 33.1 MB in the beginning and 33.0 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:29,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 904.06 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.9 MB in the beginning and 45.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.20 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 42.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,902 INFO L168 Benchmark]: Boogie Preprocessor took 77.05 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 39.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,902 INFO L168 Benchmark]: RCFGBuilder took 2637.33 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 39.5 MB in the beginning and 45.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,903 INFO L168 Benchmark]: TraceAbstraction took 11258.16 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 44.9 MB in the beginning and 68.0 MB in the end (delta: -23.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,903 INFO L168 Benchmark]: Witness Printer took 162.59 ms. Allocated memory is still 113.2 MB. Free memory was 68.0 MB in the beginning and 49.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 33.1 MB in the beginning and 33.0 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 904.06 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.9 MB in the beginning and 45.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.20 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 42.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.05 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 39.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2637.33 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 39.5 MB in the beginning and 45.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11258.16 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 44.9 MB in the beginning and 68.0 MB in the end (delta: -23.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. * Witness Printer took 162.59 ms. Allocated memory is still 113.2 MB. Free memory was 68.0 MB in the beginning and 49.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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: [L220] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L500] int pumpRunning = 0; [L501] int systemActive = 1; [L695] int waterLevel = 1; [L696] int methaneLevelCritical = 0; [L853] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L926] int retValue_acc ; [L927] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L844] int retValue_acc ; [L847] retValue_acc = 1 [L848] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L933] tmp = valid_product() [L935] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L424] int splverifierCounter ; [L425] int tmp ; [L426] int tmp___0 ; [L427] int tmp___1 ; [L428] int tmp___2 ; [L431] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L433] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L435] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L441] tmp = __VERIFIER_nondet_int() [L443] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L713] COND TRUE waterLevel < 2 [L714] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L451] tmp___0 = __VERIFIER_nondet_int() [L453] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L461] tmp___2 = __VERIFIER_nondet_int() [L463] COND TRUE \read(tmp___2) [L689] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L508] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L515] COND TRUE \read(systemActive) [L537] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L540] COND TRUE ! pumpRunning [L652] int retValue_acc ; [L653] int tmp ; [L654] int tmp___0 ; [L775] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L778] COND FALSE !(waterLevel < 2) [L782] retValue_acc = 0 [L783] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L658] tmp = isHighWaterSensorDry() [L660] COND FALSE !(\read(tmp)) [L663] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L665] retValue_acc = tmp___0 [L666] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L542] tmp = isHighWaterLevel() [L544] COND TRUE \read(tmp) [L571] int tmp ; [L596] int retValue_acc ; [L734] int retValue_acc ; [L737] retValue_acc = methaneLevelCritical [L738] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L600] retValue_acc = isMethaneLevelCritical() [L602] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L575] tmp = isMethaneAlarm() [L577] COND FALSE !(\read(tmp)) [L565] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L790] int tmp ; [L791] int tmp___0 ; [L734] int retValue_acc ; [L737] retValue_acc = methaneLevelCritical [L738] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L795] tmp = isMethaneLevelCritical() [L797] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L433] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L435] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L441] tmp = __VERIFIER_nondet_int() [L443] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L451] tmp___0 = __VERIFIER_nondet_int() [L453] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L725] COND FALSE !(\read(methaneLevelCritical)) [L728] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L461] tmp___2 = __VERIFIER_nondet_int() [L463] COND TRUE \read(tmp___2) [L689] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L508] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L701] COND TRUE waterLevel > 0 [L702] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L515] COND TRUE \read(systemActive) [L537] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L540] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L790] int tmp ; [L791] int tmp___0 ; [L734] int retValue_acc ; [L737] retValue_acc = methaneLevelCritical [L738] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L795] tmp = isMethaneLevelCritical() [L797] COND TRUE \read(tmp) [L607] int retValue_acc ; [L610] retValue_acc = pumpRunning [L611] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L799] tmp___0 = isPumpRunning() [L801] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L3] __assert_fail("0", "minepump_spec1_product44.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 881 SDtfs, 1406 SDslu, 2113 SDs, 0 SdLazy, 230 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 533 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred 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: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1499 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 311 NumberOfCodeBlocks, 311 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 24342 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2048 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 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...