./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6943849e6f46346ed71c5d8e09de50318fefe6a ........................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6943849e6f46346ed71c5d8e09de50318fefe6a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:53:40,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:53:40,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:53:40,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:53:40,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:53:40,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:53:40,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:53:40,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:53:40,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:53:40,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:53:40,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:53:40,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:53:40,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:53:40,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:53:40,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:53:40,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:53:40,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:53:40,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:53:40,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:53:40,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:53:40,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:53:40,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:53:40,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:53:40,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:53:40,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:53:40,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:53:40,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:53:40,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:53:40,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:53:40,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:53:40,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:53:40,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:53:40,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:53:40,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:53:40,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:53:40,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:53:40,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:53:40,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:53:40,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:53:40,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:53:40,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:53:40,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 20:53:40,685 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:53:40,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:53:40,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:53:40,686 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:53:40,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:53:40,686 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:53:40,686 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:53:40,686 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:53:40,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:53:40,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:53:40,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:53:40,687 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:53:40,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:53:40,687 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:53:40,687 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:53:40,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 20:53:40,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 20:53:40,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:53:40,688 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:53:40,688 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 20:53:40,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:53:40,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:53:40,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:53:40,689 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 20:53:40,689 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 20:53:40,689 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 20:53:40,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:53:40,689 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:53:40,689 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:53:40,689 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:53:40,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:53:40,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:53:40,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:53:40,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:53:40,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:53:40,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:53:40,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:53:40,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:53:40,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:53:40,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:53:40,691 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2019-12-07 20:53:40,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:53:40,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:53:40,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:53:40,800 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:53:40,801 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:53:40,801 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2019-12-07 20:53:40,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data/e5ec814cc/6647bbc8fb844211869420f668d65f83/FLAGd8ad7a1c3 [2019-12-07 20:53:41,367 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:53:41,368 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2019-12-07 20:53:41,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data/e5ec814cc/6647bbc8fb844211869420f668d65f83/FLAGd8ad7a1c3 [2019-12-07 20:53:41,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data/e5ec814cc/6647bbc8fb844211869420f668d65f83 [2019-12-07 20:53:41,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:53:41,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:53:41,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:53:41,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:53:41,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:53:41,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:53:41" (1/1) ... [2019-12-07 20:53:41,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3376a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:41, skipping insertion in model container [2019-12-07 20:53:41,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:53:41" (1/1) ... [2019-12-07 20:53:41,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:53:41,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:53:42,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:53:42,183 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2019-12-07 20:53:42,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58214af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:42, skipping insertion in model container [2019-12-07 20:53:42,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:53:42,184 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 20:53:42,185 INFO L168 Benchmark]: Toolchain (without parser) took 300.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 934.6 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:53:42,186 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 953.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:53:42,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 934.6 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:53:42,187 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 953.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 934.6 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 20:53:43,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:53:43,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:53:43,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:53:43,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:53:43,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:53:43,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:53:43,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:53:43,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:53:43,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:53:43,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:53:43,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:53:43,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:53:43,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:53:43,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:53:43,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:53:43,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:53:43,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:53:43,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:53:43,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:53:43,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:53:43,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:53:43,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:53:43,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:53:43,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:53:43,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:53:43,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:53:43,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:53:43,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:53:43,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:53:43,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:53:43,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:53:43,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:53:43,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:53:43,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:53:43,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:53:43,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:53:43,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:53:43,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:53:43,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:53:43,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:53:43,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-12-07 20:53:43,355 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:53:43,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:53:43,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:53:43,356 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:53:43,357 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:53:43,357 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:53:43,357 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:53:43,357 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:53:43,357 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:53:43,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 20:53:43,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 20:53:43,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:53:43,358 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:53:43,358 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 20:53:43,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:53:43,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:53:43,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:53:43,359 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 20:53:43,359 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 20:53:43,359 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 20:53:43,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:53:43,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:53:43,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 20:53:43,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 20:53:43,360 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:53:43,360 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:53:43,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:53:43,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 20:53:43,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:53:43,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:53:43,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:53:43,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:53:43,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:53:43,361 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 20:53:43,361 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 20:53:43,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:53:43,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:53:43,362 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2019-12-07 20:53:43,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:53:43,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:53:43,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:53:43,560 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:53:43,560 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:53:43,560 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2019-12-07 20:53:43,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data/bc83aa1a7/467366282aa34bf0afcc6530631843c7/FLAG7f7ec7676 [2019-12-07 20:53:44,144 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:53:44,144 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2019-12-07 20:53:44,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data/bc83aa1a7/467366282aa34bf0afcc6530631843c7/FLAG7f7ec7676 [2019-12-07 20:53:44,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/data/bc83aa1a7/467366282aa34bf0afcc6530631843c7 [2019-12-07 20:53:44,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:53:44,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:53:44,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:53:44,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:53:44,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:53:44,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:53:44" (1/1) ... [2019-12-07 20:53:44,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5031311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:44, skipping insertion in model container [2019-12-07 20:53:44,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:53:44" (1/1) ... [2019-12-07 20:53:44,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:53:44,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:53:44,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:53:44,899 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 20:53:44,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:53:44,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:53:44,945 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:53:44,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:53:45,032 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:53:45,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45 WrapperNode [2019-12-07 20:53:45,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:53:45,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:53:45,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:53:45,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:53:45,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:53:45,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:53:45,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:53:45,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:53:45,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... [2019-12-07 20:53:45,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:53:45,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:53:45,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:53:45,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:53:45,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:53:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 20:53:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:53:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:53:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-12-07 20:53:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:53:45,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:53:45,299 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:53:45,300 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 20:53:45,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:53:45 BoogieIcfgContainer [2019-12-07 20:53:45,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:53:45,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:53:45,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:53:45,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:53:45,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:53:44" (1/3) ... [2019-12-07 20:53:45,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703c93a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:53:45, skipping insertion in model container [2019-12-07 20:53:45,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:45" (2/3) ... [2019-12-07 20:53:45,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703c93a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:53:45, skipping insertion in model container [2019-12-07 20:53:45,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:53:45" (3/3) ... [2019-12-07 20:53:45,305 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test20-2.i [2019-12-07 20:53:45,312 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:53:45,315 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 20:53:45,323 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 20:53:45,337 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:53:45,337 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 20:53:45,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:53:45,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:53:45,338 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:53:45,338 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:53:45,338 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:53:45,338 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:53:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 20:53:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:53:45,351 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:45,351 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:45,351 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 20:53:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:45,355 INFO L82 PathProgramCache]: Analyzing trace with hash -594039000, now seen corresponding path program 1 times [2019-12-07 20:53:45,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:53:45,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422250543] [2019-12-07 20:53:45,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 20:53:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:53:45,429 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 20:53:45,433 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:53:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:45,495 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:53:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:45,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422250543] [2019-12-07 20:53:45,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:53:45,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-12-07 20:53:45,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634476957] [2019-12-07 20:53:45,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:53:45,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:53:45,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:53:45,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:53:45,539 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states. [2019-12-07 20:53:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:53:45,694 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-12-07 20:53:45,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 20:53:45,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-12-07 20:53:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:53:45,703 INFO L225 Difference]: With dead ends: 37 [2019-12-07 20:53:45,703 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 20:53:45,704 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-12-07 20:53:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 20:53:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2019-12-07 20:53:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 20:53:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-12-07 20:53:45,726 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2019-12-07 20:53:45,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:53:45,727 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-12-07 20:53:45,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:53:45,727 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-12-07 20:53:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:53:45,727 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:45,727 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:45,928 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 20:53:45,929 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 20:53:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash -591268437, now seen corresponding path program 1 times [2019-12-07 20:53:45,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:53:45,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602706319] [2019-12-07 20:53:45,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 20:53:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:53:46,017 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 20:53:46,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:53:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:46,027 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:53:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:46,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602706319] [2019-12-07 20:53:46,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:53:46,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 20:53:46,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338135987] [2019-12-07 20:53:46,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:53:46,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:53:46,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:53:46,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:53:46,032 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2019-12-07 20:53:46,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:53:46,053 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-12-07 20:53:46,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:53:46,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 20:53:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:53:46,054 INFO L225 Difference]: With dead ends: 34 [2019-12-07 20:53:46,054 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 20:53:46,055 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:53:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 20:53:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2019-12-07 20:53:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 20:53:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-12-07 20:53:46,059 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2019-12-07 20:53:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:53:46,059 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-12-07 20:53:46,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:53:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-12-07 20:53:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:53:46,060 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:46,060 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:46,261 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 20:53:46,261 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 20:53:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1183738925, now seen corresponding path program 1 times [2019-12-07 20:53:46,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:53:46,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476042093] [2019-12-07 20:53:46,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 20:53:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:53:46,294 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 20:53:46,295 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:53:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:46,321 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:53:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:46,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476042093] [2019-12-07 20:53:46,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:53:46,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 20:53:46,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038737339] [2019-12-07 20:53:46,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:53:46,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:53:46,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:53:46,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:53:46,328 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2019-12-07 20:53:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:53:46,368 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-12-07 20:53:46,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:53:46,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 20:53:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:53:46,369 INFO L225 Difference]: With dead ends: 24 [2019-12-07 20:53:46,369 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 20:53:46,369 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 20:53:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 20:53:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-12-07 20:53:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 20:53:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-12-07 20:53:46,372 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2019-12-07 20:53:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:53:46,372 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-12-07 20:53:46,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:53:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-12-07 20:53:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:53:46,373 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:46,373 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:46,574 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 20:53:46,575 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 20:53:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:46,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1235339760, now seen corresponding path program 1 times [2019-12-07 20:53:46,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:53:46,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045148886] [2019-12-07 20:53:46,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 20:53:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:53:46,664 INFO L264 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 20:53:46,665 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:53:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:46,769 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:53:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:46,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045148886] [2019-12-07 20:53:46,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:53:46,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2019-12-07 20:53:46,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910542914] [2019-12-07 20:53:46,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 20:53:46,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:53:46,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 20:53:46,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-12-07 20:53:46,883 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 15 states. [2019-12-07 20:53:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:53:47,595 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2019-12-07 20:53:47,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 20:53:47,595 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 10 [2019-12-07 20:53:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:53:47,595 INFO L225 Difference]: With dead ends: 33 [2019-12-07 20:53:47,596 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 20:53:47,596 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2019-12-07 20:53:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 20:53:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 20. [2019-12-07 20:53:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 20:53:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-12-07 20:53:47,598 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2019-12-07 20:53:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:53:47,598 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-12-07 20:53:47,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 20:53:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-12-07 20:53:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:53:47,599 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:47,599 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:47,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 20:53:47,800 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 20:53:47,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:47,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1958790987, now seen corresponding path program 1 times [2019-12-07 20:53:47,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:53:47,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59621390] [2019-12-07 20:53:47,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 20:53:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:53:47,867 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 20:53:47,868 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:53:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:47,875 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:53:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:47,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59621390] [2019-12-07 20:53:47,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:53:47,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 20:53:47,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394231802] [2019-12-07 20:53:47,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:53:47,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:53:47,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:53:47,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:53:47,878 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2019-12-07 20:53:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:53:47,890 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-12-07 20:53:47,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:53:47,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 20:53:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:53:47,891 INFO L225 Difference]: With dead ends: 29 [2019-12-07 20:53:47,891 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 20:53:47,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:53:47,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 20:53:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2019-12-07 20:53:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 20:53:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 20:53:47,893 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2019-12-07 20:53:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:53:47,894 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 20:53:47,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:53:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 20:53:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:53:47,894 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:47,894 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:48,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 20:53:48,096 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 20:53:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:48,097 INFO L82 PathProgramCache]: Analyzing trace with hash 359173162, now seen corresponding path program 1 times [2019-12-07 20:53:48,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:53:48,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925869273] [2019-12-07 20:53:48,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 20:53:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:53:48,152 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 20:53:48,153 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:53:48,183 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 20:53:48,183 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:53:48,185 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:53:48,185 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 20:53:48,186 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 20:53:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:48,220 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:53:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:48,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925869273] [2019-12-07 20:53:48,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:53:48,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-12-07 20:53:48,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206921209] [2019-12-07 20:53:48,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:53:48,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:53:48,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:53:48,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:53:48,253 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2019-12-07 20:53:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:53:48,373 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-12-07 20:53:48,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 20:53:48,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-12-07 20:53:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:53:48,374 INFO L225 Difference]: With dead ends: 23 [2019-12-07 20:53:48,374 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 20:53:48,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-12-07 20:53:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 20:53:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 20:53:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 20:53:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-12-07 20:53:48,376 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2019-12-07 20:53:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:53:48,376 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-12-07 20:53:48,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:53:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-12-07 20:53:48,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:53:48,377 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:48,377 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:48,577 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 20:53:48,578 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 20:53:48,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:48,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1039231532, now seen corresponding path program 1 times [2019-12-07 20:53:48,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:53:48,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4478702] [2019-12-07 20:53:48,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 20:53:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:53:48,648 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 20:53:48,649 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:53:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:48,660 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:53:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:48,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4478702] [2019-12-07 20:53:48,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:53:48,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 20:53:48,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845488877] [2019-12-07 20:53:48,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:53:48,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:53:48,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:53:48,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:53:48,662 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 4 states. [2019-12-07 20:53:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:53:48,676 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-12-07 20:53:48,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:53:48,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 20:53:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:53:48,677 INFO L225 Difference]: With dead ends: 16 [2019-12-07 20:53:48,677 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 20:53:48,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:53:48,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 20:53:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 20:53:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 20:53:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-12-07 20:53:48,678 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2019-12-07 20:53:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:53:48,678 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-12-07 20:53:48,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:53:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-12-07 20:53:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 20:53:48,679 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:48,679 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:48,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 20:53:48,880 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 20:53:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:48,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1568026990, now seen corresponding path program 1 times [2019-12-07 20:53:48,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:53:48,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985239126] [2019-12-07 20:53:48,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 20:53:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:53:48,986 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 20:53:48,987 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:53:49,002 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:53:49,003 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-12-07 20:53:49,003 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:53:49,019 INFO L614 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2019-12-07 20:53:49,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:53:49,022 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 20:53:49,022 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2019-12-07 20:53:49,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:53:49,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:53:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:49,199 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:53:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:53:55,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985239126] [2019-12-07 20:53:55,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:53:55,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 18 [2019-12-07 20:53:55,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857228048] [2019-12-07 20:53:55,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-07 20:53:55,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:53:55,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-07 20:53:55,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=284, Unknown=3, NotChecked=0, Total=342 [2019-12-07 20:53:55,342 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 19 states. [2019-12-07 20:53:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:53:57,906 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-12-07 20:53:57,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 20:53:57,906 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 13 [2019-12-07 20:53:57,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:53:57,906 INFO L225 Difference]: With dead ends: 13 [2019-12-07 20:53:57,906 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:53:57,907 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=146, Invalid=501, Unknown=3, NotChecked=0, Total=650 [2019-12-07 20:53:57,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:53:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:53:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:53:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:53:57,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-12-07 20:53:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:53:57,907 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:53:57,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-07 20:53:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:53:57,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:53:58,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 20:53:58,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:53:58 BoogieIcfgContainer [2019-12-07 20:53:58,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:53:58,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:53:58,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:53:58,116 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:53:58,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:53:45" (3/4) ... [2019-12-07 20:53:58,119 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:53:58,127 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-12-07 20:53:58,127 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 20:53:58,127 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:53:58,157 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3f6307cc-bbfd-484d-a3a5-badc9231f61d/bin/utaipan/witness.graphml [2019-12-07 20:53:58,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:53:58,158 INFO L168 Benchmark]: Toolchain (without parser) took 13557.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 947.0 MB in the beginning and 1.0 GB in the end (delta: -80.6 MB). Peak memory consumption was 119.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:53:58,158 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:53:58,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -129.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:53:58,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:53:58,159 INFO L168 Benchmark]: Boogie Preprocessor took 18.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-12-07 20:53:58,159 INFO L168 Benchmark]: RCFGBuilder took 213.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:53:58,160 INFO L168 Benchmark]: TraceAbstraction took 12814.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 25.1 MB). Peak memory consumption was 93.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:53:58,160 INFO L168 Benchmark]: Witness Printer took 41.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:53:58,161 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 431.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -129.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 213.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12814.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 25.1 MB). Peak memory consumption was 93.2 MB. Max. memory is 11.5 GB. * Witness Printer took 41.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 789]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Result: SAFE, OverallTime: 12.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 347 SDslu, 248 SDs, 0 SdLazy, 316 SolverSat, 24 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 46 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 148 ConstructedInterpolants, 13 QuantifiedInterpolants, 7419 SizeOfPredicates, 51 NumberOfNonLiveVariables, 371 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...