./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/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/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/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 0.2.0-a4ecdab [2020-11-22 13:08:31,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:31,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:31,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:31,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:31,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:31,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:31,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:31,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:31,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:31,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:31,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:31,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:31,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:31,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:31,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:31,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:31,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:31,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:31,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:31,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:31,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:31,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:31,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:31,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:31,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:31,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:31,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:31,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:31,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:31,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:31,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:31,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:31,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:31,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:31,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:31,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:31,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:31,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:31,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:31,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:31,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:08:31,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:31,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:31,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:31,849 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:31,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:31,850 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:31,850 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:08:31,850 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:31,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:31,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:08:31,851 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:08:31,852 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:31,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:08:31,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:08:31,852 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:08:31,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:08:31,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:08:31,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:31,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:31,854 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:08:31,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:31,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:31,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:31,855 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:08:31,855 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:08:31,855 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:08:31,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:31,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:31,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:31,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:31,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:31,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:31,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:31,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:31,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:31,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:31,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:08:31,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:08:31,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:31,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:31,859 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2020-11-22 13:08:32,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:32,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:32,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:32,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:32,170 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:32,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2020-11-22 13:08:32,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data/bd69e3a05/56e04e9480a541e0927f575b388581dc/FLAGfd2808576 [2020-11-22 13:08:32,746 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:32,746 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2020-11-22 13:08:32,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data/bd69e3a05/56e04e9480a541e0927f575b388581dc/FLAGfd2808576 [2020-11-22 13:08:33,050 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data/bd69e3a05/56e04e9480a541e0927f575b388581dc [2020-11-22 13:08:33,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:33,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:33,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:33,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:33,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:33,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:33" (1/1) ... [2020-11-22 13:08:33,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8f434e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:33, skipping insertion in model container [2020-11-22 13:08:33,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:33" (1/1) ... [2020-11-22 13:08:33,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:33,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:33,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:33,534 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-11-22 13:08:33,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@587170e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:33, skipping insertion in model container [2020-11-22 13:08:33,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:33,536 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:08:33,538 INFO L168 Benchmark]: Toolchain (without parser) took 482.56 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 63.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:33,539 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 67.4 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:33,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.14 ms. Allocated memory is still 90.2 MB. Free memory was 55.5 MB in the beginning and 63.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:33,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 67.4 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.14 ms. Allocated memory is still 90.2 MB. Free memory was 55.5 MB in the beginning and 63.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 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 0.2.0-a4ecdab [2020-11-22 13:08:35,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:35,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:35,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:35,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:35,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:35,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:35,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:35,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:35,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:35,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:35,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:35,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:35,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:35,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:35,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:35,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:35,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:35,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:35,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:35,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:35,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:35,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:35,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:35,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:35,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:35,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:35,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:35,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:35,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:35,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:35,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:35,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:35,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:35,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:35,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:35,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:35,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:35,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:35,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:35,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:35,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 13:08:35,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:35,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:35,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:35,782 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:35,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:35,782 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:35,783 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:35,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:35,783 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:35,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:08:35,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:08:35,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:35,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:35,786 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:08:35,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:35,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:35,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:35,787 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:08:35,787 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:08:35,788 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:08:35,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:35,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:35,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:08:35,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:08:35,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:35,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:35,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:35,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:08:35,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:35,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:35,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:35,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:35,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:35,806 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:08:35,807 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:08:35,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:35,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:35,807 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2020-11-22 13:08:36,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:36,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:36,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:36,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:36,239 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:36,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2020-11-22 13:08:36,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data/a10a3b200/bddd64502f5845ef9dedfb4caf9d6aa7/FLAG2c9523b7b [2020-11-22 13:08:36,911 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:36,911 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2020-11-22 13:08:36,929 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data/a10a3b200/bddd64502f5845ef9dedfb4caf9d6aa7/FLAG2c9523b7b [2020-11-22 13:08:37,227 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/data/a10a3b200/bddd64502f5845ef9dedfb4caf9d6aa7 [2020-11-22 13:08:37,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:37,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:37,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:37,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:37,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:37,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:37" (1/1) ... [2020-11-22 13:08:37,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6669c169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:37, skipping insertion in model container [2020-11-22 13:08:37,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:37" (1/1) ... [2020-11-22 13:08:37,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:37,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:37,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:37,776 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:08:37,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:37,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:37,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:37,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:38,032 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:38,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38 WrapperNode [2020-11-22 13:08:38,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:38,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:38,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:38,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:38,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:38,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:38,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:38,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:38,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... [2020-11-22 13:08:38,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:38,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:38,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:38,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:38,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:08:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:08:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-22 13:08:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:38,562 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:38,562 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 13:08:38,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:38 BoogieIcfgContainer [2020-11-22 13:08:38,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:38,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:38,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:38,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:38,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:37" (1/3) ... [2020-11-22 13:08:38,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b34b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:38, skipping insertion in model container [2020-11-22 13:08:38,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:38" (2/3) ... [2020-11-22 13:08:38,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b34b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:38, skipping insertion in model container [2020-11-22 13:08:38,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:38" (3/3) ... [2020-11-22 13:08:38,572 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test20-2.i [2020-11-22 13:08:38,582 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:38,586 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-22 13:08:38,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 13:08:38,616 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:38,616 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:08:38,616 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:38,617 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:38,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:38,617 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:38,617 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:38,617 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-22 13:08:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:08:38,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:38,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:38,636 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:08:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:38,641 INFO L82 PathProgramCache]: Analyzing trace with hash -594039000, now seen corresponding path program 1 times [2020-11-22 13:08:38,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:38,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41189323] [2020-11-22 13:08:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:38,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:08:38,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:38,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:38,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41189323] [2020-11-22 13:08:38,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:38,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-22 13:08:38,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216611083] [2020-11-22 13:08:38,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:08:38,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:38,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:08:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:08:38,960 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states. [2020-11-22 13:08:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:39,210 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-22 13:08:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:08:39,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-11-22 13:08:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:39,224 INFO L225 Difference]: With dead ends: 37 [2020-11-22 13:08:39,225 INFO L226 Difference]: Without dead ends: 31 [2020-11-22 13:08:39,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:08:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-22 13:08:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2020-11-22 13:08:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-22 13:08:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-22 13:08:39,249 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2020-11-22 13:08:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:39,249 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-22 13:08:39,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:08:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-22 13:08:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:08:39,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:39,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:39,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:08:39,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:08:39,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:39,464 INFO L82 PathProgramCache]: Analyzing trace with hash -591268437, now seen corresponding path program 1 times [2020-11-22 13:08:39,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:39,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810946146] [2020-11-22 13:08:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:39,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 13:08:39,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:39,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:39,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810946146] [2020-11-22 13:08:39,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:39,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:08:39,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752580346] [2020-11-22 13:08:39,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:39,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:39,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:39,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:39,545 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2020-11-22 13:08:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:39,571 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-22 13:08:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:39,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 13:08:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:39,573 INFO L225 Difference]: With dead ends: 34 [2020-11-22 13:08:39,573 INFO L226 Difference]: Without dead ends: 34 [2020-11-22 13:08:39,574 INFO L677 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 [2020-11-22 13:08:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-22 13:08:39,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2020-11-22 13:08:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 13:08:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-22 13:08:39,578 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2020-11-22 13:08:39,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:39,578 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-22 13:08:39,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:39,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-22 13:08:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:08:39,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:39,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:39,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:08:39,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:08:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:39,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1183738925, now seen corresponding path program 1 times [2020-11-22 13:08:39,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:39,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82339606] [2020-11-22 13:08:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:39,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:08:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:39,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:39,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82339606] [2020-11-22 13:08:39,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:39,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:08:39,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969763212] [2020-11-22 13:08:39,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:08:39,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:39,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:08:39,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:08:39,917 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-11-22 13:08:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:39,979 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-22 13:08:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:08:39,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-22 13:08:39,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:39,981 INFO L225 Difference]: With dead ends: 24 [2020-11-22 13:08:39,981 INFO L226 Difference]: Without dead ends: 24 [2020-11-22 13:08:39,981 INFO L677 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 [2020-11-22 13:08:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-22 13:08:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-11-22 13:08:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-22 13:08:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-22 13:08:39,984 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2020-11-22 13:08:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:39,984 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-22 13:08:39,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:08:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-22 13:08:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:08:39,985 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:39,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:40,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:08:40,186 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:08:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:40,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1235339760, now seen corresponding path program 1 times [2020-11-22 13:08:40,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:40,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495293675] [2020-11-22 13:08:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:40,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-22 13:08:40,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:40,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:40,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495293675] [2020-11-22 13:08:40,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:40,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2020-11-22 13:08:40,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573912031] [2020-11-22 13:08:40,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-22 13:08:40,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:40,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-22 13:08:40,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:08:40,582 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 15 states. [2020-11-22 13:08:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:41,509 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2020-11-22 13:08:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-22 13:08:41,509 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 10 [2020-11-22 13:08:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:41,510 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:08:41,510 INFO L226 Difference]: Without dead ends: 33 [2020-11-22 13:08:41,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2020-11-22 13:08:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-22 13:08:41,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 20. [2020-11-22 13:08:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 13:08:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-22 13:08:41,514 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-22 13:08:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:41,521 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-22 13:08:41,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-22 13:08:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-22 13:08:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:08:41,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:41,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:41,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:08:41,733 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:08:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1958790987, now seen corresponding path program 1 times [2020-11-22 13:08:41,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:41,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22467042] [2020-11-22 13:08:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:41,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:08:41,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:41,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:41,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22467042] [2020-11-22 13:08:41,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:41,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:08:41,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136474630] [2020-11-22 13:08:41,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:41,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:41,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:41,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:41,810 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2020-11-22 13:08:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:41,831 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-22 13:08:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:41,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-22 13:08:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:41,832 INFO L225 Difference]: With dead ends: 29 [2020-11-22 13:08:41,832 INFO L226 Difference]: Without dead ends: 24 [2020-11-22 13:08:41,833 INFO L677 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 [2020-11-22 13:08:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-22 13:08:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2020-11-22 13:08:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:08:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-22 13:08:41,835 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2020-11-22 13:08:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:41,835 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-22 13:08:41,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-22 13:08:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:08:41,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:41,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:42,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:08:42,037 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:08:42,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:42,038 INFO L82 PathProgramCache]: Analyzing trace with hash 359173162, now seen corresponding path program 1 times [2020-11-22 13:08:42,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:42,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003862138] [2020-11-22 13:08:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:42,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:08:42,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:42,132 INFO L384 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 [2020-11-22 13:08:42,132 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:08:42,140 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:42,140 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:08:42,140 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 13:08:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:42,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:42,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003862138] [2020-11-22 13:08:42,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:42,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-22 13:08:42,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235830598] [2020-11-22 13:08:42,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:08:42,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:42,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:08:42,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:08:42,209 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-11-22 13:08:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:42,417 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-22 13:08:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:08:42,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-22 13:08:42,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:42,418 INFO L225 Difference]: With dead ends: 23 [2020-11-22 13:08:42,421 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 13:08:42,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:08:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 13:08:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 13:08:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 13:08:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-22 13:08:42,425 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-11-22 13:08:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:42,425 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-22 13:08:42,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:08:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-22 13:08:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:08:42,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:42,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:42,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:08:42,634 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:08:42,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:42,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1039231532, now seen corresponding path program 1 times [2020-11-22 13:08:42,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:42,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566313491] [2020-11-22 13:08:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:42,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:08:42,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:42,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:42,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566313491] [2020-11-22 13:08:42,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:42,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:08:42,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921405893] [2020-11-22 13:08:42,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:42,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:42,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:42,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:42,742 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 4 states. [2020-11-22 13:08:42,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:42,790 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-22 13:08:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:42,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 13:08:42,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:42,792 INFO L225 Difference]: With dead ends: 16 [2020-11-22 13:08:42,792 INFO L226 Difference]: Without dead ends: 14 [2020-11-22 13:08:42,793 INFO L677 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 [2020-11-22 13:08:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-22 13:08:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-22 13:08:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-22 13:08:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-22 13:08:42,795 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2020-11-22 13:08:42,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:42,795 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-22 13:08:42,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:42,795 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-22 13:08:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:08:42,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:42,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:43,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:08:43,003 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:08:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1568026990, now seen corresponding path program 1 times [2020-11-22 13:08:43,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:43,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237730054] [2020-11-22 13:08:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:43,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-22 13:08:43,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:43,096 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:43,096 INFO L384 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 [2020-11-22 13:08:43,097 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:08:43,117 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-11-22 13:08:43,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:08:43,123 INFO L545 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. [2020-11-22 13:08:43,123 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-11-22 13:08:43,123 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:08:43,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:08:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:45,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:54,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237730054] [2020-11-22 13:08:54,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:54,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 18 [2020-11-22 13:08:54,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670752028] [2020-11-22 13:08:54,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-22 13:08:54,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:54,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-22 13:08:54,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=282, Unknown=5, NotChecked=0, Total=342 [2020-11-22 13:08:54,460 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 19 states. [2020-11-22 13:08:57,112 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-11-22 13:08:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:57,300 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-11-22 13:08:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:08:57,300 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 13 [2020-11-22 13:08:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:57,300 INFO L225 Difference]: With dead ends: 13 [2020-11-22 13:08:57,300 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:08:57,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=146, Invalid=499, Unknown=5, NotChecked=0, Total=650 [2020-11-22 13:08:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:08:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:08:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:08:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:08:57,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-22 13:08:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:57,301 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:08:57,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-22 13:08:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:08:57,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:08:57,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 13:08:57,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:57 BoogieIcfgContainer [2020-11-22 13:08:57,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:57,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:57,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:57,505 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:57,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:38" (3/4) ... [2020-11-22 13:08:57,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:08:57,519 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 13:08:57,519 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:08:57,531 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:08:57,590 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c5abe36a-2959-4566-8d42-cf9942d3b39f/bin/utaipan/witness.graphml [2020-11-22 13:08:57,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:57,594 INFO L168 Benchmark]: Toolchain (without parser) took 20363.51 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 43.7 MB in the beginning and 41.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:57,595 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 44.7 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:57,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 800.77 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 34.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:57,596 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 31.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:57,598 INFO L168 Benchmark]: Boogie Preprocessor took 38.25 ms. Allocated memory is still 62.9 MB. Free memory was 31.6 MB in the beginning and 30.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:57,599 INFO L168 Benchmark]: RCFGBuilder took 443.17 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 30.3 MB in the beginning and 51.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:57,599 INFO L168 Benchmark]: TraceAbstraction took 18939.18 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 51.1 MB in the beginning and 44.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:57,600 INFO L168 Benchmark]: Witness Printer took 87.85 ms. Allocated memory is still 96.5 MB. Free memory was 44.0 MB in the beginning and 41.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:57,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 44.7 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 800.77 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 34.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 31.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.25 ms. Allocated memory is still 62.9 MB. Free memory was 31.6 MB in the beginning and 30.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 443.17 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 30.3 MB in the beginning and 51.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18939.18 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 51.1 MB in the beginning and 44.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * Witness Printer took 87.85 ms. Allocated memory is still 96.5 MB. Free memory was 44.0 MB in the beginning and 41.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 347 SDslu, 248 SDs, 0 SdLazy, 316 SolverSat, 24 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 13.5s 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, 12.1s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 148 ConstructedInterpolants, 13 QuantifiedInterpolants, 7731 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...