./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE --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 c11af8296bfd5ac190948fd112a042e269f74b0ed21dcbb0764a4b3dab5067a3 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE --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 c11af8296bfd5ac190948fd112a042e269f74b0ed21dcbb0764a4b3dab5067a3 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:32:34,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:32:34,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:32:34,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:32:34,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:32:34,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:32:34,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:32:34,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:32:34,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:32:34,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:32:34,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:32:34,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:32:34,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:32:34,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:32:34,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:32:34,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:32:34,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:32:34,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:32:34,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:32:34,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:32:34,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:32:34,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:32:34,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:32:34,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:32:34,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:32:34,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:32:34,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:32:34,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:32:34,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:32:34,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:32:34,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:32:34,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:32:34,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:32:34,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:32:34,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:32:34,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:32:34,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:32:34,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:32:34,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:32:34,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:32:34,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:32:34,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:32:34,861 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:32:34,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:32:34,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:32:34,869 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:32:34,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:32:34,869 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:32:34,870 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:32:34,870 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:32:34,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:32:34,870 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:32:34,871 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:32:34,872 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:32:34,872 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:32:34,872 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:32:34,872 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:32:34,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:32:34,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:32:34,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:32:34,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:32:34,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:32:34,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:32:34,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:32:34,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:32:34,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:32:34,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:32:34,875 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:32:34,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:32:34,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:32:34,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:32:34,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:32:34,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:32:34,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:32:34,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:32:34,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:32:34,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:32:34,879 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:32:34,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:32:34,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:32:34,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:32:34,880 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_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c11af8296bfd5ac190948fd112a042e269f74b0ed21dcbb0764a4b3dab5067a3 [2021-10-24 10:32:35,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:32:35,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:32:35,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:32:35,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:32:35,214 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:32:35,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2021-10-24 10:32:35,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data/6523b701d/cb293afaa64e4b7c8165f08dc5ba1b27/FLAG520446e93 [2021-10-24 10:32:35,817 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:32:35,821 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2021-10-24 10:32:35,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data/6523b701d/cb293afaa64e4b7c8165f08dc5ba1b27/FLAG520446e93 [2021-10-24 10:32:36,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data/6523b701d/cb293afaa64e4b7c8165f08dc5ba1b27 [2021-10-24 10:32:36,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:32:36,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:32:36,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:32:36,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:32:36,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:32:36,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:32:36" (1/1) ... [2021-10-24 10:32:36,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7958f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:36, skipping insertion in model container [2021-10-24 10:32:36,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:32:36" (1/1) ... [2021-10-24 10:32:36,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:32:36,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:32:36,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:32:36,686 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) [2021-10-24 10:32:36,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2342a8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:36, skipping insertion in model container [2021-10-24 10:32:36,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:32:36,688 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:32:36,690 INFO L168 Benchmark]: Toolchain (without parser) took 434.10 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 61.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:32:36,690 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 64.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:32:36,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.90 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 61.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:32:36,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 64.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 431.90 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 61.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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 0.2.1-dev-e943c26 [2021-10-24 10:32:38,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:32:38,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:32:38,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:32:38,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:32:38,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:32:38,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:32:38,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:32:38,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:32:38,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:32:38,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:32:38,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:32:38,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:32:38,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:32:38,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:32:39,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:32:39,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:32:39,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:32:39,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:32:39,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:32:39,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:32:39,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:32:39,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:32:39,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:32:39,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:32:39,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:32:39,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:32:39,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:32:39,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:32:39,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:32:39,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:32:39,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:32:39,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:32:39,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:32:39,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:32:39,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:32:39,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:32:39,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:32:39,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:32:39,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:32:39,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:32:39,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:32:39,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:32:39,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:32:39,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:32:39,073 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:32:39,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:32:39,074 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:32:39,074 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:32:39,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:32:39,075 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:32:39,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:32:39,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:32:39,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:32:39,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:32:39,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:32:39,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:32:39,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:32:39,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:32:39,077 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:32:39,077 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:32:39,078 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:32:39,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:32:39,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:32:39,078 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:32:39,078 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:32:39,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:32:39,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:32:39,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:32:39,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:32:39,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:32:39,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:32:39,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:32:39,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:32:39,080 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:32:39,081 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:32:39,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:32:39,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:32:39,081 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_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c11af8296bfd5ac190948fd112a042e269f74b0ed21dcbb0764a4b3dab5067a3 [2021-10-24 10:32:39,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:32:39,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:32:39,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:32:39,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:32:39,481 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:32:39,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2021-10-24 10:32:39,539 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data/9f94e07bc/c4130f428377420fad44b5a66319ebdb/FLAG935cf0370 [2021-10-24 10:32:40,092 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:32:40,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2021-10-24 10:32:40,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data/9f94e07bc/c4130f428377420fad44b5a66319ebdb/FLAG935cf0370 [2021-10-24 10:32:40,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/data/9f94e07bc/c4130f428377420fad44b5a66319ebdb [2021-10-24 10:32:40,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:32:40,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:32:40,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:32:40,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:32:40,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:32:40,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:32:40" (1/1) ... [2021-10-24 10:32:40,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471eda44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:40, skipping insertion in model container [2021-10-24 10:32:40,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:32:40" (1/1) ... [2021-10-24 10:32:40,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:32:40,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:32:40,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:32:40,861 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:32:40,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:32:40,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:32:40,926 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:32:40,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:32:41,038 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:32:41,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41 WrapperNode [2021-10-24 10:32:41,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:32:41,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:32:41,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:32:41,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:32:41,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:32:41,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:32:41,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:32:41,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:32:41,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:32:41,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:32:41,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:32:41,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:32:41,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (1/1) ... [2021-10-24 10:32:41,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:32:41,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:32:41,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:32:41,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:32:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:32:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:32:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:32:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 10:32:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:32:41,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:32:41,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:32:41,564 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-24 10:32:41,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:32:41 BoogieIcfgContainer [2021-10-24 10:32:41,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:32:41,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:32:41,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:32:41,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:32:41,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:32:40" (1/3) ... [2021-10-24 10:32:41,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287e93c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:32:41, skipping insertion in model container [2021-10-24 10:32:41,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:32:41" (2/3) ... [2021-10-24 10:32:41,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287e93c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:32:41, skipping insertion in model container [2021-10-24 10:32:41,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:32:41" (3/3) ... [2021-10-24 10:32:41,574 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test16.i [2021-10-24 10:32:41,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:32:41,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 10:32:41,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:32:41,638 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:32:41,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:32:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:32:41,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:41,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:32:41,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:41,664 INFO L82 PathProgramCache]: Analyzing trace with hash 889783782, now seen corresponding path program 1 times [2021-10-24 10:32:41,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:41,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470238064] [2021-10-24 10:32:41,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:41,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:41,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:41,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:41,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:32:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:41,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:32:41,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:41,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:41,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:41,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470238064] [2021-10-24 10:32:41,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470238064] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:41,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:41,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-24 10:32:41,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896235998] [2021-10-24 10:32:41,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:32:41,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:42,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:32:42,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:32:42,019 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:42,096 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-24 10:32:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:32:42,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:32:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:42,108 INFO L225 Difference]: With dead ends: 27 [2021-10-24 10:32:42,108 INFO L226 Difference]: Without dead ends: 21 [2021-10-24 10:32:42,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:32:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-24 10:32:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-10-24 10:32:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-24 10:32:42,149 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2021-10-24 10:32:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:42,150 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-24 10:32:42,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-24 10:32:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:32:42,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:42,151 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:32:42,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:42,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:42,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:42,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:42,364 INFO L82 PathProgramCache]: Analyzing trace with hash 889784041, now seen corresponding path program 1 times [2021-10-24 10:32:42,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:42,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846559499] [2021-10-24 10:32:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:42,365 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:42,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:42,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:42,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:32:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:42,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:32:42,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:42,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:42,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:42,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846559499] [2021-10-24 10:32:42,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846559499] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:42,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:42,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:32:42,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047679032] [2021-10-24 10:32:42,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:32:42,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:42,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:32:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:32:42,505 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:42,530 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-24 10:32:42,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:32:42,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:32:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:42,532 INFO L225 Difference]: With dead ends: 27 [2021-10-24 10:32:42,532 INFO L226 Difference]: Without dead ends: 24 [2021-10-24 10:32:42,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:32:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-24 10:32:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2021-10-24 10:32:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-24 10:32:42,544 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2021-10-24 10:32:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:42,544 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-24 10:32:42,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-24 10:32:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:32:42,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:42,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:32:42,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:42,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:42,759 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:42,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:42,759 INFO L82 PathProgramCache]: Analyzing trace with hash 118460299, now seen corresponding path program 1 times [2021-10-24 10:32:42,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:42,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780909005] [2021-10-24 10:32:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:42,760 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:42,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:42,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:42,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:32:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:42,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:32:42,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:42,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:42,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:42,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780909005] [2021-10-24 10:32:42,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780909005] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:42,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:42,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:32:42,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964137081] [2021-10-24 10:32:42,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:32:42,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:42,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:32:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:32:42,954 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:42,986 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-24 10:32:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:32:42,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:32:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:42,988 INFO L225 Difference]: With dead ends: 17 [2021-10-24 10:32:42,988 INFO L226 Difference]: Without dead ends: 17 [2021-10-24 10:32:42,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:32:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-24 10:32:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-24 10:32:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-24 10:32:42,994 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2021-10-24 10:32:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:42,995 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-24 10:32:42,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-24 10:32:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:32:42,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:42,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:32:43,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:43,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:43,208 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:43,208 INFO L82 PathProgramCache]: Analyzing trace with hash 118460558, now seen corresponding path program 1 times [2021-10-24 10:32:43,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:43,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210379230] [2021-10-24 10:32:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:43,209 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:43,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:43,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:43,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:32:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:43,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:32:43,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:43,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:43,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:43,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210379230] [2021-10-24 10:32:43,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210379230] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:43,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:43,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-24 10:32:43,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026217363] [2021-10-24 10:32:43,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:32:43,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:32:43,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:32:43,379 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:43,405 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-24 10:32:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:32:43,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:32:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:43,406 INFO L225 Difference]: With dead ends: 17 [2021-10-24 10:32:43,407 INFO L226 Difference]: Without dead ends: 17 [2021-10-24 10:32:43,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:32:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-24 10:32:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-10-24 10:32:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-24 10:32:43,410 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2021-10-24 10:32:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:43,410 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-24 10:32:43,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-24 10:32:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:32:43,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:43,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:32:43,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:43,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:43,622 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:43,623 INFO L82 PathProgramCache]: Analyzing trace with hash -622697974, now seen corresponding path program 1 times [2021-10-24 10:32:43,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:43,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336340912] [2021-10-24 10:32:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:43,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:43,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:43,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:43,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:32:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:43,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:32:43,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:43,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:43,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:43,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336340912] [2021-10-24 10:32:43,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336340912] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:43,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:43,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-24 10:32:43,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093288844] [2021-10-24 10:32:43,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:32:43,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:43,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:32:43,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:32:43,882 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:44,047 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-24 10:32:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 10:32:44,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:32:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:44,049 INFO L225 Difference]: With dead ends: 22 [2021-10-24 10:32:44,049 INFO L226 Difference]: Without dead ends: 22 [2021-10-24 10:32:44,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 185.5ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:32:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-24 10:32:44,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 13. [2021-10-24 10:32:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-24 10:32:44,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2021-10-24 10:32:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:44,052 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-24 10:32:44,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-24 10:32:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:32:44,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:44,053 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:32:44,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:44,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:44,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:44,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2123767955, now seen corresponding path program 1 times [2021-10-24 10:32:44,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:44,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160368330] [2021-10-24 10:32:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:44,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:44,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:44,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:44,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:32:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:44,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:32:44,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:44,397 INFO L388 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 [2021-10-24 10:32:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:44,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:44,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:44,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160368330] [2021-10-24 10:32:44,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160368330] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:44,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:44,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:32:44,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744813086] [2021-10-24 10:32:44,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:32:44,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:32:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:32:44,477 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:44,538 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-24 10:32:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:32:44,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:32:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:44,540 INFO L225 Difference]: With dead ends: 19 [2021-10-24 10:32:44,540 INFO L226 Difference]: Without dead ends: 19 [2021-10-24 10:32:44,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:32:44,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-24 10:32:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-24 10:32:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-24 10:32:44,543 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-10-24 10:32:44,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:44,543 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-24 10:32:44,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,544 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-24 10:32:44,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:32:44,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:44,544 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:32:44,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:44,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:44,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:44,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:44,756 INFO L82 PathProgramCache]: Analyzing trace with hash -348760593, now seen corresponding path program 1 times [2021-10-24 10:32:44,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:44,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569736829] [2021-10-24 10:32:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:44,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:44,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:44,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:44,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:32:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:44,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:32:44,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:44,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:44,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:44,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569736829] [2021-10-24 10:32:44,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569736829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:44,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:44,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:32:44,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082436821] [2021-10-24 10:32:44,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:32:44,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:32:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:32:44,906 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:44,945 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-24 10:32:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:32:44,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:32:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:44,946 INFO L225 Difference]: With dead ends: 20 [2021-10-24 10:32:44,946 INFO L226 Difference]: Without dead ends: 20 [2021-10-24 10:32:44,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:32:44,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-24 10:32:44,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 12. [2021-10-24 10:32:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-24 10:32:44,948 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-10-24 10:32:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:44,949 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-24 10:32:44,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-24 10:32:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:32:44,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:44,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:32:44,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:45,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:45,159 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:45,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:45,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1412297103, now seen corresponding path program 1 times [2021-10-24 10:32:45,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:45,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807441467] [2021-10-24 10:32:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:45,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:45,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:45,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:32:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:45,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:32:45,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:45,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:49,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:49,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807441467] [2021-10-24 10:32:49,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807441467] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:49,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:49,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-24 10:32:49,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027849960] [2021-10-24 10:32:49,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 10:32:49,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 10:32:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2021-10-24 10:32:49,676 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:49,893 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-24 10:32:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:32:49,894 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:32:49,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:49,894 INFO L225 Difference]: With dead ends: 19 [2021-10-24 10:32:49,894 INFO L226 Difference]: Without dead ends: 12 [2021-10-24 10:32:49,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 4321.3ms TimeCoverageRelationStatistics Valid=48, Invalid=132, Unknown=2, NotChecked=0, Total=182 [2021-10-24 10:32:49,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-24 10:32:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-24 10:32:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-24 10:32:49,896 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2021-10-24 10:32:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:49,896 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-24 10:32:49,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-24 10:32:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:32:49,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:32:49,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:32:49,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:50,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:50,098 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:32:50,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:32:50,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2073323567, now seen corresponding path program 1 times [2021-10-24 10:32:50,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:32:50,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343023239] [2021-10-24 10:32:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:50,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:32:50,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:32:50,100 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:32:50,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:32:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:50,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:32:50,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:50,237 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-24 10:32:50,238 INFO L388 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 14 treesize of output 15 [2021-10-24 10:32:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:50,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:50,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:50,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343023239] [2021-10-24 10:32:50,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343023239] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:32:50,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:32:50,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 11 [2021-10-24 10:32:50,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899137997] [2021-10-24 10:32:50,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-24 10:32:50,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:32:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-24 10:32:50,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:32:50,663 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:32:50,750 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-24 10:32:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:32:50,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:32:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:32:50,751 INFO L225 Difference]: With dead ends: 11 [2021-10-24 10:32:50,751 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:32:50,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 210.4ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:32:50,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:32:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:32:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:32:50,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-24 10:32:50,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:32:50,752 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:32:50,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:32:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:32:50,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:32:50,755 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:32:50,755 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:32:50,756 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:32:50,756 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:32:50,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:32:50,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:32:50,965 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:32:50,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:32:50 BoogieIcfgContainer [2021-10-24 10:32:50,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:32:50,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:32:50,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:32:50,970 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:32:50,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:32:41" (3/4) ... [2021-10-24 10:32:50,974 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:32:50,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-24 10:32:50,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-24 10:32:50,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:32:51,040 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:32:51,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:32:51,041 INFO L168 Benchmark]: Toolchain (without parser) took 10647.86 ms. Allocated memory was 54.5 MB in the beginning and 92.3 MB in the end (delta: 37.7 MB). Free memory was 30.1 MB in the beginning and 47.2 MB in the end (delta: -17.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:32:51,042 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.3 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:32:51,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.59 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 29.9 MB in the beginning and 53.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:32:51,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.48 ms. Allocated memory is still 75.5 MB. Free memory was 53.4 MB in the beginning and 51.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:32:51,043 INFO L168 Benchmark]: Boogie Preprocessor took 27.85 ms. Allocated memory is still 75.5 MB. Free memory was 51.3 MB in the beginning and 50.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:32:51,044 INFO L168 Benchmark]: RCFGBuilder took 445.17 ms. Allocated memory is still 75.5 MB. Free memory was 50.0 MB in the beginning and 39.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:32:51,044 INFO L168 Benchmark]: TraceAbstraction took 9401.92 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 39.0 MB in the beginning and 50.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:32:51,044 INFO L168 Benchmark]: Witness Printer took 70.60 ms. Allocated memory is still 92.3 MB. Free memory was 49.3 MB in the beginning and 47.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:32:51,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.3 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 644.59 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 29.9 MB in the beginning and 53.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.48 ms. Allocated memory is still 75.5 MB. Free memory was 53.4 MB in the beginning and 51.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.85 ms. Allocated memory is still 75.5 MB. Free memory was 51.3 MB in the beginning and 50.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 445.17 ms. Allocated memory is still 75.5 MB. Free memory was 50.0 MB in the beginning and 39.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9401.92 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 39.0 MB in the beginning and 50.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 70.60 ms. Allocated memory is still 92.3 MB. Free memory was 49.3 MB in the beginning and 47.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9330.3ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 13.7ms, AutomataDifference: 788.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 108 SDtfs, 221 SDslu, 161 SDs, 0 SdLazy, 198 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 268.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4919.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=6, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 30 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 76.7ms SsaConstructionTime, 177.2ms SatisfiabilityAnalysisTime, 5728.8ms InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 140 ConstructedInterpolants, 13 QuantifiedInterpolants, 801 SizeOfPredicates, 42 NumberOfNonLiveVariables, 372 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 10:32:51,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6854e0-fa89-4c72-afcc-57155c903fd3/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...