./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_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_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/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_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/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_bdb1df96-05f9-499e-bc8e-519d80a1b228/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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 ............................................................................................................................................. 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_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/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_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/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_bdb1df96-05f9-499e-bc8e-519d80a1b228/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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:59:51,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:59:51,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:59:51,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:59:51,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:59:51,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:59:51,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:59:51,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:59:51,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:59:51,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:59:51,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:59:51,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:59:51,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:59:51,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:59:51,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:59:51,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:59:51,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:59:51,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:59:51,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:59:51,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:59:51,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:59:51,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:59:51,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:59:51,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:59:51,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:59:51,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:59:51,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:59:51,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:59:51,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:59:51,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:59:51,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:59:51,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:59:51,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:59:51,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:59:51,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:59:51,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:59:51,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:59:51,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:59:51,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:59:51,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:59:51,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:59:51,395 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:59:51,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:59:51,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:59:51,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:59:51,446 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:59:51,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:59:51,446 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:59:51,446 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:59:51,446 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:59:51,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:59:51,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:59:51,447 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:59:51,447 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:59:51,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:59:51,448 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:59:51,448 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:59:51,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:59:51,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:59:51,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:59:51,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:59:51,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:59:51,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:59:51,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:59:51,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:59:51,452 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:59:51,452 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:59:51,453 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:59:51,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:59:51,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:59:51,455 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:59:51,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:59:51,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:59:51,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:59:51,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:59:51,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:59:51,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:59:51,457 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:59:51,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:59:51,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:59:51,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:59:51,458 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_bdb1df96-05f9-499e-bc8e-519d80a1b228/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2021-10-29 05:59:51,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:59:51,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:59:51,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:59:51,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:59:51,788 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:59:51,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-10-29 05:59:51,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data/f1bf14ab2/a8f4cede206242f6b01355e5e0bd8922/FLAG0266b5fc0 [2021-10-29 05:59:52,396 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:59:52,397 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-10-29 05:59:52,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data/f1bf14ab2/a8f4cede206242f6b01355e5e0bd8922/FLAG0266b5fc0 [2021-10-29 05:59:52,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data/f1bf14ab2/a8f4cede206242f6b01355e5e0bd8922 [2021-10-29 05:59:52,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:59:52,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:59:52,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:59:52,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:59:52,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:59:52,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:59:52" (1/1) ... [2021-10-29 05:59:52,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e66624e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:52, skipping insertion in model container [2021-10-29 05:59:52,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:59:52" (1/1) ... [2021-10-29 05:59:52,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:59:52,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:59:53,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:59:53,112 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 05:59:53,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14e9193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:53, skipping insertion in model container [2021-10-29 05:59:53,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:59:53,113 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:59:53,115 INFO L168 Benchmark]: Toolchain (without parser) took 439.23 ms. Allocated memory is still 136.3 MB. Free memory was 94.9 MB in the beginning and 104.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:59:53,116 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory is still 112.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:59:53,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.45 ms. Allocated memory is still 136.3 MB. Free memory was 94.7 MB in the beginning and 104.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:59:53,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory is still 112.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 435.45 ms. Allocated memory is still 136.3 MB. Free memory was 94.7 MB in the beginning and 104.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.5 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 05:59:55,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:59:55,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:59:55,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:59:55,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:59:55,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:59:55,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:59:55,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:59:55,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:59:55,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:59:55,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:59:55,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:59:55,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:59:55,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:59:55,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:59:55,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:59:55,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:59:55,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:59:55,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:59:55,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:59:55,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:59:55,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:59:55,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:59:55,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:59:55,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:59:55,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:59:55,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:59:55,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:59:55,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:59:55,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:59:55,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:59:55,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:59:55,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:59:55,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:59:55,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:59:55,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:59:55,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:59:55,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:59:55,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:59:55,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:59:55,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:59:55,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 05:59:55,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:59:55,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:59:55,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:59:55,676 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:59:55,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:59:55,676 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:59:55,676 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:59:55,677 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:59:55,677 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:59:55,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:59:55,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:59:55,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:59:55,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:59:55,680 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:59:55,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:59:55,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:59:55,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:59:55,681 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:59:55,681 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:59:55,682 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:59:55,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:59:55,682 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:59:55,682 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:59:55,682 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:59:55,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:59:55,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:59:55,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:59:55,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:59:55,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:59:55,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:59:55,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:59:55,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:59:55,685 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:59:55,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:59:55,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:59:55,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:59:55,686 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_bdb1df96-05f9-499e-bc8e-519d80a1b228/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2021-10-29 05:59:56,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:59:56,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:59:56,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:59:56,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:59:56,059 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:59:56,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-10-29 05:59:56,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data/f5ceb1c1f/d6ff103203ff46a1b4d39e4a77fd86d9/FLAG1e8ad2c5b [2021-10-29 05:59:56,758 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:59:56,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-10-29 05:59:56,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data/f5ceb1c1f/d6ff103203ff46a1b4d39e4a77fd86d9/FLAG1e8ad2c5b [2021-10-29 05:59:56,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/data/f5ceb1c1f/d6ff103203ff46a1b4d39e4a77fd86d9 [2021-10-29 05:59:56,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:59:56,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:59:56,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:59:56,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:59:56,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:59:57,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:59:56" (1/1) ... [2021-10-29 05:59:57,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d12ea64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57, skipping insertion in model container [2021-10-29 05:59:57,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:59:56" (1/1) ... [2021-10-29 05:59:57,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:59:57,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:59:57,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:59:57,533 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:59:57,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:59:57,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:59:57,653 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:59:57,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:59:57,753 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:59:57,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57 WrapperNode [2021-10-29 05:59:57,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:59:57,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:59:57,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:59:57,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:59:57,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:59:57,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:59:57,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:59:57,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:59:57,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:59:57,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:59:57,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:59:57,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:59:57,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (1/1) ... [2021-10-29 05:59:57,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:59:57,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:59:57,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:59:57,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:59:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:59:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:59:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:59:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 05:59:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:59:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:59:58,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:59:58,238 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-29 05:59:58,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:59:58 BoogieIcfgContainer [2021-10-29 05:59:58,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:59:58,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:59:58,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:59:58,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:59:58,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:59:56" (1/3) ... [2021-10-29 05:59:58,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad6cec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:59:58, skipping insertion in model container [2021-10-29 05:59:58,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:59:57" (2/3) ... [2021-10-29 05:59:58,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad6cec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:59:58, skipping insertion in model container [2021-10-29 05:59:58,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:59:58" (3/3) ... [2021-10-29 05:59:58,264 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2.i [2021-10-29 05:59:58,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:59:58,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-29 05:59:58,334 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:59:58,340 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 05:59:58,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 05:59:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.6666666666666667) 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 05:59:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:59:58,359 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:59:58,359 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:59:58,360 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-29 05:59:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:59:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash 889508744, now seen corresponding path program 1 times [2021-10-29 05:59:58,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:59:58,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800318549] [2021-10-29 05:59:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:59:58,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:59:58,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:59:58,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:59:58,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:59:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:59:58,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:59:58,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:59:58,599 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 05:59:58,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:59:58,640 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 05:59:58,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:59:58,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800318549] [2021-10-29 05:59:58,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800318549] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:59:58,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:59:58,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:59:58,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255749815] [2021-10-29 05:59:58,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:59:58,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:59:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:59:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:59:58,669 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.6666666666666667) 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) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:59:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:59:58,726 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-29 05:59:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:59:58,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:59:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:59:58,736 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:59:58,736 INFO L226 Difference]: Without dead ends: 19 [2021-10-29 05:59:58,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 05:59:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-29 05:59:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-29 05:59:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. 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 05:59:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-29 05:59:58,767 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2021-10-29 05:59:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:59:58,767 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-29 05:59:58,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:59:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-29 05:59:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:59:58,769 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:59:58,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:59:58,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:59:58,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:59:58,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-29 05:59:58,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:59:58,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1804967335, now seen corresponding path program 1 times [2021-10-29 05:59:58,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:59:58,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059739976] [2021-10-29 05:59:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:59:58,985 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:59:58,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:59:58,986 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:59:58,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:59:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:59:59,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:59:59,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:59:59,143 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 05:59:59,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:59:59,190 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 05:59:59,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:59:59,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059739976] [2021-10-29 05:59:59,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059739976] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:59:59,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:59:59,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-29 05:59:59,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858502645] [2021-10-29 05:59:59,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:59:59,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:59:59,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:59:59,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:59:59,194 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:59:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:59:59,351 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-29 05:59:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:59:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:59:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:59:59,353 INFO L225 Difference]: With dead ends: 31 [2021-10-29 05:59:59,353 INFO L226 Difference]: Without dead ends: 31 [2021-10-29 05:59:59,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:59:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-29 05:59:59,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-10-29 05:59:59,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 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 05:59:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-29 05:59:59,359 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 7 [2021-10-29 05:59:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:59:59,359 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-29 05:59:59,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:59:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-29 05:59:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:59:59,360 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:59:59,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:59:59,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:59:59,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:59:59,580 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-29 05:59:59,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:59:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash 119412586, now seen corresponding path program 1 times [2021-10-29 05:59:59,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:59:59,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179947986] [2021-10-29 05:59:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:59:59,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:59:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:59:59,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:59:59,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:59:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:59:59,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:59:59,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:59:59,682 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 05:59:59,712 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 05:59:59,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:59:59,742 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 05:59:59,743 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:59:59,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179947986] [2021-10-29 05:59:59,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179947986] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:59:59,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:59:59,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:59:59,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964372334] [2021-10-29 05:59:59,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:59:59,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:59:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:59:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:59:59,745 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:59:59,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:59:59,793 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-10-29 05:59:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:59:59,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:59:59,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:59:59,795 INFO L225 Difference]: With dead ends: 23 [2021-10-29 05:59:59,795 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:59:59,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 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 05:59:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:59:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-29 05:59:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) 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 05:59:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-29 05:59:59,799 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2021-10-29 05:59:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:59:59,799 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-29 05:59:59,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:59:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-29 05:59:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:59:59,800 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:59:59,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:59:59,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 06:00:00,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:00:00,011 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-29 06:00:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:00:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash 176927092, now seen corresponding path program 1 times [2021-10-29 06:00:00,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:00:00,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870355291] [2021-10-29 06:00:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:00:00,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:00:00,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:00:00,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:00:00,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 06:00:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:00:00,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 06:00:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:00:00,113 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 06:00:00,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:00:00,135 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 06:00:00,135 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:00:00,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870355291] [2021-10-29 06:00:00,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870355291] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:00:00,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:00:00,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 06:00:00,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205852903] [2021-10-29 06:00:00,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:00:00,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:00:00,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:00:00,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:00:00,137 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:00:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:00:00,155 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-10-29 06:00:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:00:00,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 06:00:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:00:00,156 INFO L225 Difference]: With dead ends: 30 [2021-10-29 06:00:00,156 INFO L226 Difference]: Without dead ends: 28 [2021-10-29 06:00:00,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 06:00:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-29 06:00:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-10-29 06:00:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) 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 06:00:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-29 06:00:00,159 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2021-10-29 06:00:00,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:00:00,160 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-29 06:00:00,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:00:00,160 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-29 06:00:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 06:00:00,161 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:00:00,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:00:00,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 06:00:00,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:00:00,376 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-29 06:00:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:00:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 176670888, now seen corresponding path program 1 times [2021-10-29 06:00:00,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:00:00,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118896278] [2021-10-29 06:00:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:00:00,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:00:00,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:00:00,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:00:00,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 06:00:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:00:00,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 06:00:00,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:00:00,493 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 06:00:00,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:00:00,523 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 06:00:00,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:00:00,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118896278] [2021-10-29 06:00:00,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118896278] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:00:00,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:00:00,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 06:00:00,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555734225] [2021-10-29 06:00:00,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:00:00,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:00:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:00:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:00:00,526 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:00:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:00:00,580 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-29 06:00:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:00:00,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 06:00:00,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:00:00,581 INFO L225 Difference]: With dead ends: 19 [2021-10-29 06:00:00,581 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 06:00:00,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 06:00:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 06:00:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-29 06:00:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 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 06:00:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-10-29 06:00:00,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 8 [2021-10-29 06:00:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:00:00,586 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-10-29 06:00:00,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:00:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-10-29 06:00:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 06:00:00,592 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:00:00,592 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:00:00,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 06:00:00,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:00:00,798 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-29 06:00:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:00:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1842728914, now seen corresponding path program 1 times [2021-10-29 06:00:00,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:00:00,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295318200] [2021-10-29 06:00:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:00:00,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:00:00,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:00:00,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:00:00,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 06:00:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:00:00,888 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 06:00:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:00:00,920 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 06:00:00,920 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 06:00:00,921 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:00:00,923 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:00:00,923 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:00:00,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:00:00,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:00:00,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:00:00,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:00:00,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 06:00:01,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:00:01,127 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 06:00:01,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:00:01,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:00:01 BoogieIcfgContainer [2021-10-29 06:00:01,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:00:01,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:00:01,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:00:01,182 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:00:01,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:59:58" (3/4) ... [2021-10-29 06:00:01,184 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 06:00:01,230 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 06:00:01,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:00:01,232 INFO L168 Benchmark]: Toolchain (without parser) took 4236.27 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 51.0 MB in the beginning and 53.2 MB in the end (delta: -2.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:01,232 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:00:01,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.88 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 36.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:01,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.60 ms. Allocated memory is still 71.3 MB. Free memory was 36.1 MB in the beginning and 33.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:01,234 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 71.3 MB. Free memory was 33.9 MB in the beginning and 32.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:01,234 INFO L168 Benchmark]: RCFGBuilder took 401.36 ms. Allocated memory is still 71.3 MB. Free memory was 32.5 MB in the beginning and 44.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:01,235 INFO L168 Benchmark]: TraceAbstraction took 2940.12 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 43.8 MB in the beginning and 55.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:01,235 INFO L168 Benchmark]: Witness Printer took 48.12 ms. Allocated memory is still 100.7 MB. Free memory was 54.6 MB in the beginning and 53.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:01,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 758.88 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 36.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.60 ms. Allocated memory is still 71.3 MB. Free memory was 36.1 MB in the beginning and 33.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 71.3 MB. Free memory was 33.9 MB in the beginning and 32.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 401.36 ms. Allocated memory is still 71.3 MB. Free memory was 32.5 MB in the beginning and 44.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2940.12 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 43.8 MB in the beginning and 55.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Witness Printer took 48.12 ms. Allocated memory is still 100.7 MB. Free memory was 54.6 MB in the beginning and 53.2 MB in the end (delta: 1.4 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 - CounterExampleResult [Line: 762]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] int *a8; VAL [a8={0:0}, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L759] a8 = (int *)ldv_malloc(sizeof(int)) [L762] COND TRUE \read(*a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) [L762] COND TRUE \read(*a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 121 SDslu, 44 SDs, 0 SdLazy, 109 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 22, 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, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 5 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 06:00:01,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb1df96-05f9-499e-bc8e-519d80a1b228/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...