./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG --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 c03aa9fd4feebd47970076773e3fcb11c7b82646fa9d57d8ea4dde0614545dfa ............................................................................................................................................. 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_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG --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 c03aa9fd4feebd47970076773e3fcb11c7b82646fa9d57d8ea4dde0614545dfa ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:51:21,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:51:21,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:51:21,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:51:21,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:51:21,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:51:21,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:51:21,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:51:21,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:51:21,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:51:21,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:51:21,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:51:21,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:51:21,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:51:21,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:51:21,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:51:21,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:51:21,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:51:21,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:51:21,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:51:21,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:51:21,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:51:21,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:51:21,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:51:21,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:51:21,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:51:21,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:51:21,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:51:21,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:51:21,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:51:21,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:51:21,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:51:21,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:51:21,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:51:21,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:51:21,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:51:21,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:51:21,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:51:21,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:51:21,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:51:21,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:51:21,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:51:21,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:51:21,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:51:21,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:51:21,950 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:51:21,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:51:21,954 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:51:21,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:51:21,955 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:51:21,955 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:51:21,955 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:51:21,956 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:51:21,956 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:51:21,957 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:51:21,958 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:51:21,958 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:51:21,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:51:21,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:51:21,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:51:21,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:51:21,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:51:21,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:51:21,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:51:21,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:51:21,961 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:51:21,961 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:51:21,961 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:51:21,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:51:21,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:51:21,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:51:21,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:51:21,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:51:21,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:51:21,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:51:21,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:51:21,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:51:21,966 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:51:21,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:51:21,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:51:21,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:51:21,967 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_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c03aa9fd4feebd47970076773e3fcb11c7b82646fa9d57d8ea4dde0614545dfa [2021-10-29 05:51:22,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:51:22,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:51:22,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:51:22,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:51:22,293 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:51:22,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-29 05:51:22,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data/951429ef4/e0e86a571afa42a7abf45559240b8c09/FLAG33312465d [2021-10-29 05:51:23,027 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:51:23,028 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-29 05:51:23,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data/951429ef4/e0e86a571afa42a7abf45559240b8c09/FLAG33312465d [2021-10-29 05:51:23,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data/951429ef4/e0e86a571afa42a7abf45559240b8c09 [2021-10-29 05:51:23,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:51:23,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:51:23,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:51:23,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:51:23,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:51:23,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:51:23" (1/1) ... [2021-10-29 05:51:23,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef94767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:23, skipping insertion in model container [2021-10-29 05:51:23,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:51:23" (1/1) ... [2021-10-29 05:51:23,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:51:23,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:51:23,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:51:23,805 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) [2021-10-29 05:51:23,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1953255f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:23, skipping insertion in model container [2021-10-29 05:51:23,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:51:23,807 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:51:23,810 INFO L168 Benchmark]: Toolchain (without parser) took 541.06 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 80.0 MB in the beginning and 115.4 MB in the end (delta: -35.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:23,812 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 113.2 MB. Free memory is still 65.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:23,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.42 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 79.6 MB in the beginning and 115.4 MB in the end (delta: -35.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:23,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 113.2 MB. Free memory is still 65.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 534.42 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 79.6 MB in the beginning and 115.4 MB in the end (delta: -35.8 MB). Peak memory consumption was 6.3 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-b2eff8b [2021-10-29 05:51:26,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:51:26,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:51:26,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:51:26,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:51:26,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:51:26,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:51:26,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:51:26,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:51:26,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:51:26,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:51:26,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:51:26,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:51:26,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:51:26,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:51:26,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:51:26,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:51:26,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:51:26,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:51:26,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:51:26,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:51:26,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:51:26,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:51:26,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:51:26,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:51:26,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:51:26,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:51:26,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:51:26,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:51:26,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:51:26,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:51:26,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:51:26,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:51:26,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:51:26,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:51:26,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:51:26,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:51:26,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:51:26,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:51:26,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:51:26,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:51:26,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 05:51:26,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:51:26,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:51:26,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:51:26,554 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:51:26,554 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:51:26,555 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:51:26,555 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:51:26,555 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:51:26,555 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:51:26,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:51:26,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:51:26,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:51:26,559 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:51:26,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:51:26,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:51:26,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:51:26,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:51:26,560 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:51:26,560 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:51:26,561 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:51:26,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:51:26,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:51:26,561 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:51:26,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:51:26,562 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:51:26,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:51:26,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:51:26,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:51:26,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:51:26,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:51:26,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:51:26,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:51:26,564 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:51:26,564 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:51:26,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:51:26,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:51:26,565 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_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c03aa9fd4feebd47970076773e3fcb11c7b82646fa9d57d8ea4dde0614545dfa [2021-10-29 05:51:27,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:51:27,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:51:27,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:51:27,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:51:27,089 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:51:27,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-29 05:51:27,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data/962350b75/d59efa2b48b344758b9091b206ba222c/FLAG32dd25269 [2021-10-29 05:51:27,898 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:51:27,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-29 05:51:27,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data/962350b75/d59efa2b48b344758b9091b206ba222c/FLAG32dd25269 [2021-10-29 05:51:28,160 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/data/962350b75/d59efa2b48b344758b9091b206ba222c [2021-10-29 05:51:28,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:51:28,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:51:28,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:51:28,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:51:28,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:51:28,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fc3188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28, skipping insertion in model container [2021-10-29 05:51:28,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:51:28,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:51:28,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:51:28,834 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:51:28,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:51:28,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:51:28,957 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:51:29,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:51:29,154 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:51:29,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29 WrapperNode [2021-10-29 05:51:29,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:51:29,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:51:29,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:51:29,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:51:29,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:51:29,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:51:29,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:51:29,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:51:29,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:51:29,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:51:29,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:51:29,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:51:29,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (1/1) ... [2021-10-29 05:51:29,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:51:29,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:51:29,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:51:29,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:51:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:51:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:51:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:51:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 05:51:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:51:29,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:51:29,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:51:29,727 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-29 05:51:29,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:29 BoogieIcfgContainer [2021-10-29 05:51:29,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:51:29,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:51:29,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:51:29,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:51:29,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:51:28" (1/3) ... [2021-10-29 05:51:29,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9d9b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:51:29, skipping insertion in model container [2021-10-29 05:51:29,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:29" (2/3) ... [2021-10-29 05:51:29,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9d9b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:51:29, skipping insertion in model container [2021-10-29 05:51:29,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:29" (3/3) ... [2021-10-29 05:51:29,752 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test20-2.i [2021-10-29 05:51:29,757 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:51:29,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-29 05:51:29,821 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:51:29,828 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 [2021-10-29 05:51:29,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-29 05:51:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 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) [2021-10-29 05:51:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:51:29,849 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:29,849 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:29,850 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)] === [2021-10-29 05:51:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:29,856 INFO L85 PathProgramCache]: Analyzing trace with hash -594039000, now seen corresponding path program 1 times [2021-10-29 05:51:29,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:29,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859946466] [2021-10-29 05:51:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:29,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:29,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:29,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:29,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:51:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:30,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:51:30,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:30,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:30,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:30,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859946466] [2021-10-29 05:51:30,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859946466] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:30,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:30,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-29 05:51:30,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786496720] [2021-10-29 05:51:30,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:51:30,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:51:30,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:51:30,381 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 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) Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-29 05:51:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:30,627 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-10-29 05:51:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:51:30,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 [2021-10-29 05:51:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:30,637 INFO L225 Difference]: With dead ends: 37 [2021-10-29 05:51:30,650 INFO L226 Difference]: Without dead ends: 31 [2021-10-29 05:51:30,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:51:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-29 05:51:30,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2021-10-29 05:51:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) [2021-10-29 05:51:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-29 05:51:30,681 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2021-10-29 05:51:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:30,682 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-29 05:51:30,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-29 05:51:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-29 05:51:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:51:30,683 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:30,683 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:30,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 05:51:30,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:30,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:51:30,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:30,896 INFO L85 PathProgramCache]: Analyzing trace with hash -591268437, now seen corresponding path program 1 times [2021-10-29 05:51:30,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:30,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33013114] [2021-10-29 05:51:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:30,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:30,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:30,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:30,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:51:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:30,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:51:30,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:31,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:31,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:31,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33013114] [2021-10-29 05:51:31,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33013114] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:31,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:31,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:51:31,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972836500] [2021-10-29 05:51:31,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:51:31,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:51:31,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:51:31,082 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:51:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:31,117 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-29 05:51:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:51:31,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 [2021-10-29 05:51:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:31,121 INFO L225 Difference]: With dead ends: 34 [2021-10-29 05:51:31,122 INFO L226 Difference]: Without dead ends: 34 [2021-10-29 05:51:31,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:51:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-29 05:51:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2021-10-29 05:51:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-10-29 05:51:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-29 05:51:31,130 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2021-10-29 05:51:31,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:31,131 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-29 05:51:31,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:51:31,131 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-29 05:51:31,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:51:31,132 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:31,132 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:31,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:31,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:31,348 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)] === [2021-10-29 05:51:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1183738925, now seen corresponding path program 1 times [2021-10-29 05:51:31,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:31,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480769609] [2021-10-29 05:51:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:31,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:31,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:31,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:51:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:31,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:51:31,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:31,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:31,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:31,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480769609] [2021-10-29 05:51:31,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480769609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:31,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:31,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:51:31,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570055660] [2021-10-29 05:51:31,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:51:31,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:51:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:51:31,658 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:51:31,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:31,733 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-29 05:51:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:51:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 [2021-10-29 05:51:31,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:31,734 INFO L225 Difference]: With dead ends: 24 [2021-10-29 05:51:31,734 INFO L226 Difference]: Without dead ends: 24 [2021-10-29 05:51:31,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:51:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-29 05:51:31,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2021-10-29 05:51:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 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) [2021-10-29 05:51:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-29 05:51:31,738 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2021-10-29 05:51:31,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:31,739 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-29 05:51:31,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:51:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-29 05:51:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:51:31,740 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:31,740 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:31,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:31,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:31,942 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:51:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1235339760, now seen corresponding path program 1 times [2021-10-29 05:51:31,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:31,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718654302] [2021-10-29 05:51:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:31,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:31,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:31,947 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:31,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:51:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:32,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:51:32,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:32,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:32,458 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:32,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718654302] [2021-10-29 05:51:32,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718654302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:32,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:32,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-29 05:51:32,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027293309] [2021-10-29 05:51:32,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:51:32,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:32,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:51:32,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:51:32,462 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-10-29 05:51:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:33,389 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-10-29 05:51:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-29 05:51:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 [2021-10-29 05:51:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:33,390 INFO L225 Difference]: With dead ends: 33 [2021-10-29 05:51:33,391 INFO L226 Difference]: Without dead ends: 33 [2021-10-29 05:51:33,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2021-10-29 05:51:33,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-29 05:51:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 20. [2021-10-29 05:51:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 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) [2021-10-29 05:51:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-29 05:51:33,395 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-10-29 05:51:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:33,395 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-29 05:51:33,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-10-29 05:51:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-10-29 05:51:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:51:33,396 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:33,397 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:33,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-29 05:51:33,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:33,600 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:51:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1958790987, now seen corresponding path program 1 times [2021-10-29 05:51:33,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:33,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731787363] [2021-10-29 05:51:33,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:33,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:33,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:33,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:33,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:51:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:33,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:51:33,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:33,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:33,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:33,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731787363] [2021-10-29 05:51:33,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731787363] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:33,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:33,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:51:33,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285841629] [2021-10-29 05:51:33,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:51:33,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:33,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:51:33,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:33,748 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2021-10-29 05:51:33,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:33,775 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-29 05:51:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:51:33,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 [2021-10-29 05:51:33,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:33,776 INFO L225 Difference]: With dead ends: 29 [2021-10-29 05:51:33,776 INFO L226 Difference]: Without dead ends: 24 [2021-10-29 05:51:33,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-29 05:51:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2021-10-29 05:51:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2021-10-29 05:51:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-29 05:51:33,779 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2021-10-29 05:51:33,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:33,780 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-29 05:51:33,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2021-10-29 05:51:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-29 05:51:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:51:33,780 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:33,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:33,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:33,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:33,987 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)] === [2021-10-29 05:51:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:33,988 INFO L85 PathProgramCache]: Analyzing trace with hash 359173162, now seen corresponding path program 1 times [2021-10-29 05:51:33,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:33,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590556412] [2021-10-29 05:51:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:33,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:33,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:33,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:51:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:34,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:51:34,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:34,134 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 [2021-10-29 05:51:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:34,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:34,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:34,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590556412] [2021-10-29 05:51:34,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590556412] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:34,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:34,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-29 05:51:34,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936640298] [2021-10-29 05:51:34,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:51:34,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:51:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:51:34,311 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:51:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:34,494 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-10-29 05:51:34,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:51:34,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) Word has length 11 [2021-10-29 05:51:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:34,496 INFO L225 Difference]: With dead ends: 23 [2021-10-29 05:51:34,496 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:51:34,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:51:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:51:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-29 05:51:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 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) [2021-10-29 05:51:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-29 05:51:34,500 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2021-10-29 05:51:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:34,500 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-29 05:51:34,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:51:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-29 05:51:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:51:34,501 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:34,501 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:34,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:34,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:34,704 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)] === [2021-10-29 05:51:34,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:34,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1039231532, now seen corresponding path program 1 times [2021-10-29 05:51:34,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:34,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329432798] [2021-10-29 05:51:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:34,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:34,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:34,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:34,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:51:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:34,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:51:34,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:34,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:34,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:34,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329432798] [2021-10-29 05:51:34,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329432798] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:34,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:34,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:51:34,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108881910] [2021-10-29 05:51:34,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:51:34,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:51:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:51:34,890 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-29 05:51:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:34,920 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-29 05:51:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:51:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Word has length 11 [2021-10-29 05:51:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:34,922 INFO L225 Difference]: With dead ends: 16 [2021-10-29 05:51:34,922 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 05:51:34,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:51:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 05:51:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 05:51:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 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) [2021-10-29 05:51:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-10-29 05:51:34,927 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2021-10-29 05:51:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:34,928 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-10-29 05:51:34,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-29 05:51:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-10-29 05:51:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:51:34,929 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:34,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:34,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:35,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:35,136 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)] === [2021-10-29 05:51:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1568026990, now seen corresponding path program 1 times [2021-10-29 05:51:35,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:35,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259497058] [2021-10-29 05:51:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:35,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:35,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:35,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:35,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:51:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:35,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:51:35,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:35,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:42,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:42,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259497058] [2021-10-29 05:51:42,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259497058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:42,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:42,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-29 05:51:42,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482504598] [2021-10-29 05:51:42,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 05:51:42,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 05:51:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=230, Unknown=2, NotChecked=0, Total=272 [2021-10-29 05:51:42,241 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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) [2021-10-29 05:51:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:42,861 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-29 05:51:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:51:42,862 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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 13 [2021-10-29 05:51:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:42,862 INFO L225 Difference]: With dead ends: 13 [2021-10-29 05:51:42,862 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:51:42,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=122, Invalid=428, Unknown=2, NotChecked=0, Total=552 [2021-10-29 05:51:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:51:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:51:42,863 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) [2021-10-29 05:51:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:51:42,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-29 05:51:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:42,864 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:51:42,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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) [2021-10-29 05:51:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:51:42,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:51:42,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:51:42,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:51:42,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:51:42,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:51:42,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:43,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:43,071 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:43,073 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:51:43,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:51:43 BoogieIcfgContainer [2021-10-29 05:51:43,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:51:43,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:51:43,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:51:43,076 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:51:43,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:29" (3/4) ... [2021-10-29 05:51:43,080 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:51:43,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 05:51:43,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:51:43,094 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:51:43,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:51:43,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:51:43,143 INFO L168 Benchmark]: Toolchain (without parser) took 14975.32 ms. Allocated memory was 54.5 MB in the beginning and 88.1 MB in the end (delta: 33.6 MB). Free memory was 30.6 MB in the beginning and 60.5 MB in the end (delta: -30.0 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:43,144 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 6.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:43,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 985.07 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 30.4 MB in the beginning and 52.8 MB in the end (delta: -22.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:43,145 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.48 ms. Allocated memory is still 73.4 MB. Free memory was 52.8 MB in the beginning and 50.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:43,146 INFO L168 Benchmark]: Boogie Preprocessor took 60.87 ms. Allocated memory is still 73.4 MB. Free memory was 50.4 MB in the beginning and 49.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:43,146 INFO L168 Benchmark]: RCFGBuilder took 435.05 ms. Allocated memory is still 73.4 MB. Free memory was 49.2 MB in the beginning and 38.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:43,147 INFO L168 Benchmark]: TraceAbstraction took 13329.82 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 38.1 MB in the beginning and 63.2 MB in the end (delta: -25.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:43,147 INFO L168 Benchmark]: Witness Printer took 65.90 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 60.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:43,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 6.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 985.07 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 30.4 MB in the beginning and 52.8 MB in the end (delta: -22.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.48 ms. Allocated memory is still 73.4 MB. Free memory was 52.8 MB in the beginning and 50.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.87 ms. Allocated memory is still 73.4 MB. Free memory was 50.4 MB in the beginning and 49.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 435.05 ms. Allocated memory is still 73.4 MB. Free memory was 49.2 MB in the beginning and 38.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13329.82 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 38.1 MB in the beginning and 63.2 MB in the end (delta: -25.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 65.90 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 60.5 MB in the end (delta: 2.7 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 789]: 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, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 13.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 360 SDslu, 247 SDs, 0 SdLazy, 299 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 46 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 148 ConstructedInterpolants, 3 QuantifiedInterpolants, 712 SizeOfPredicates, 41 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:51:43,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74427dde-fcca-4eb9-8c67-af8668aadc5b/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...