./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b69b1cc5e7bc7b36d5ea64018b501429b633eb9552e27aac1ef773c6042e4013 ............................................................................................................................................. 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_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b69b1cc5e7bc7b36d5ea64018b501429b633eb9552e27aac1ef773c6042e4013 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-e943c26 [2021-10-24 09:53:59,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:53:59,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:53:59,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:53:59,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:53:59,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:53:59,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:53:59,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:53:59,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:53:59,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:53:59,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:53:59,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:53:59,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:53:59,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:53:59,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:53:59,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:53:59,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:53:59,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:53:59,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:53:59,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:53:59,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:53:59,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:53:59,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:53:59,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:53:59,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:53:59,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:53:59,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:53:59,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:53:59,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:53:59,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:53:59,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:53:59,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:53:59,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:53:59,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:53:59,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:53:59,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:53:59,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:53:59,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:53:59,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:53:59,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:53:59,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:53:59,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 09:53:59,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:53:59,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:53:59,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:53:59,746 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:53:59,746 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:53:59,747 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:53:59,747 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:53:59,747 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:53:59,747 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:53:59,748 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:53:59,749 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:53:59,749 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:53:59,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:53:59,750 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:53:59,750 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:53:59,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 09:53:59,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 09:53:59,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:53:59,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:53:59,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 09:53:59,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:53:59,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:53:59,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:53:59,752 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 09:53:59,753 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 09:53:59,753 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 09:53:59,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:53:59,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:53:59,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:53:59,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:53:59,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:53:59,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:53:59,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:53:59,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:53:59,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:53:59,756 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:53:59,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:53:59,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:53:59,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:53:59,757 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_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b69b1cc5e7bc7b36d5ea64018b501429b633eb9552e27aac1ef773c6042e4013 [2021-10-24 09:54:00,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:54:00,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:54:00,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:54:00,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:54:00,074 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:54:00,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2021-10-24 09:54:00,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data/2f4e68252/bd9b419d714d498c8a6783479b9a0ac8/FLAG02be26c42 [2021-10-24 09:54:00,634 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:54:00,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2021-10-24 09:54:00,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data/2f4e68252/bd9b419d714d498c8a6783479b9a0ac8/FLAG02be26c42 [2021-10-24 09:54:00,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data/2f4e68252/bd9b419d714d498c8a6783479b9a0ac8 [2021-10-24 09:54:00,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:54:00,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:54:00,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:54:00,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:54:00,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:54:00,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:54:00" (1/1) ... [2021-10-24 09:54:00,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c2e19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:00, skipping insertion in model container [2021-10-24 09:54:00,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:54:00" (1/1) ... [2021-10-24 09:54:00,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:54:01,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:54:01,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:54:01,492 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-24 09:54:01,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ddd14fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:01, skipping insertion in model container [2021-10-24 09:54:01,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:54:01,494 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 09:54:01,497 INFO L168 Benchmark]: Toolchain (without parser) took 545.22 ms. Allocated memory is still 96.5 MB. Free memory was 54.0 MB in the beginning and 73.2 MB in the end (delta: -19.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:01,497 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:54:01,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.38 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 73.2 MB in the end (delta: -19.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:01,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 530.38 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 73.2 MB in the end (delta: -19.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:54:03,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:54:03,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:54:03,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:54:03,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:54:03,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:54:03,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:54:03,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:54:03,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:54:03,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:54:03,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:54:03,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:54:03,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:54:03,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:54:03,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:54:03,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:54:03,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:54:03,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:54:03,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:54:03,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:54:03,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:54:03,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:54:03,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:54:03,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:54:04,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:54:04,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:54:04,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:54:04,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:54:04,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:54:04,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:54:04,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:54:04,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:54:04,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:54:04,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:54:04,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:54:04,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:54:04,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:54:04,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:54:04,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:54:04,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:54:04,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:54:04,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 09:54:04,070 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:54:04,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:54:04,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:54:04,072 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:54:04,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:54:04,072 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:54:04,073 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:54:04,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:54:04,073 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:54:04,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 09:54:04,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 09:54:04,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:54:04,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:54:04,077 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 09:54:04,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:54:04,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:54:04,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:54:04,078 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 09:54:04,078 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 09:54:04,078 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 09:54:04,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:54:04,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:54:04,079 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:54:04,079 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:54:04,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:54:04,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:54:04,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:54:04,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:54:04,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:54:04,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:54:04,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:54:04,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:54:04,081 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:54:04,082 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:54:04,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:54:04,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:54:04,082 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_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b69b1cc5e7bc7b36d5ea64018b501429b633eb9552e27aac1ef773c6042e4013 [2021-10-24 09:54:04,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:54:04,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:54:04,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:54:04,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:54:04,526 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:54:04,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2021-10-24 09:54:04,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data/9bf8ce4ca/5442b895456f41108bfcbe6dbd87d33c/FLAGe25ddfe46 [2021-10-24 09:54:05,288 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:54:05,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2021-10-24 09:54:05,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data/9bf8ce4ca/5442b895456f41108bfcbe6dbd87d33c/FLAGe25ddfe46 [2021-10-24 09:54:05,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/data/9bf8ce4ca/5442b895456f41108bfcbe6dbd87d33c [2021-10-24 09:54:05,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:54:05,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:54:05,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:54:05,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:54:05,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:54:05,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:54:05" (1/1) ... [2021-10-24 09:54:05,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500a4a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:05, skipping insertion in model container [2021-10-24 09:54:05,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:54:05" (1/1) ... [2021-10-24 09:54:05,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:54:05,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:54:06,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:54:06,103 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 09:54:06,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:54:06,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:54:06,170 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:54:06,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:54:06,317 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:54:06,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06 WrapperNode [2021-10-24 09:54:06,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:54:06,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:54:06,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:54:06,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:54:06,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:54:06,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:54:06,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:54:06,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:54:06,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:54:06,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:54:06,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:54:06,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:54:06,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (1/1) ... [2021-10-24 09:54:06,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:54:06,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:54:06,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:54:06,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:54:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 09:54:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:54:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:54:06,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 09:54:06,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:54:06,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:54:06,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:54:06,775 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 09:54:06,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:54:06 BoogieIcfgContainer [2021-10-24 09:54:06,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:54:06,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:54:06,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:54:06,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:54:06,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:54:05" (1/3) ... [2021-10-24 09:54:06,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212f0dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:54:06, skipping insertion in model container [2021-10-24 09:54:06,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:06" (2/3) ... [2021-10-24 09:54:06,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212f0dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:54:06, skipping insertion in model container [2021-10-24 09:54:06,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:54:06" (3/3) ... [2021-10-24 09:54:06,785 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test1-2.i [2021-10-24 09:54:06,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:54:06,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-24 09:54:06,854 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:54:06,861 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:54:06,863 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-24 09:54:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:06,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 09:54:06,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:06,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 09:54:06,901 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)] === [2021-10-24 09:54:06,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:06,919 INFO L82 PathProgramCache]: Analyzing trace with hash 28693827, now seen corresponding path program 1 times [2021-10-24 09:54:06,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:06,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838344459] [2021-10-24 09:54:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:06,934 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:06,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:06,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:06,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:54:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:07,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:54:07,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:07,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:07,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:07,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838344459] [2021-10-24 09:54:07,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838344459] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:07,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:07,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:54:07,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796524577] [2021-10-24 09:54:07,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:07,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:07,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:07,211 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:07,245 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-24 09:54:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:54:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-10-24 09:54:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:07,255 INFO L225 Difference]: With dead ends: 18 [2021-10-24 09:54:07,255 INFO L226 Difference]: Without dead ends: 16 [2021-10-24 09:54:07,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-24 09:54:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-24 09:54:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-24 09:54:07,287 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 5 [2021-10-24 09:54:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:07,287 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-24 09:54:07,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-24 09:54:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 09:54:07,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:07,288 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 09:54:07,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:07,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:07,508 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)] === [2021-10-24 09:54:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:07,509 INFO L82 PathProgramCache]: Analyzing trace with hash 889508680, now seen corresponding path program 1 times [2021-10-24 09:54:07,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:07,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869690205] [2021-10-24 09:54:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:07,511 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:07,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:07,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:07,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:54:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:07,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:54:07,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:07,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:07,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:07,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869690205] [2021-10-24 09:54:07,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869690205] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:07,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:07,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-24 09:54:07,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365754351] [2021-10-24 09:54:07,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:54:07,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:07,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:54:07,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:54:07,781 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:07,923 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-10-24 09:54:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:54:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 09:54:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:07,924 INFO L225 Difference]: With dead ends: 25 [2021-10-24 09:54:07,924 INFO L226 Difference]: Without dead ends: 25 [2021-10-24 09:54:07,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 130.9ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:54:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-24 09:54:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 14. [2021-10-24 09:54:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-24 09:54:07,929 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2021-10-24 09:54:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:07,929 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-24 09:54:07,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,930 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-24 09:54:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:54:07,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:07,930 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:07,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:08,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:08,131 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)] === [2021-10-24 09:54:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965349, now seen corresponding path program 1 times [2021-10-24 09:54:08,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:08,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289270177] [2021-10-24 09:54:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:08,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:08,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:08,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:08,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:54:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:08,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:54:08,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:08,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:08,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:08,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:08,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289270177] [2021-10-24 09:54:08,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289270177] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:08,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:08,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:54:08,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726380176] [2021-10-24 09:54:08,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:08,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:08,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:08,326 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:08,387 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-24 09:54:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:54:08,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 [2021-10-24 09:54:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:08,388 INFO L225 Difference]: With dead ends: 18 [2021-10-24 09:54:08,388 INFO L226 Difference]: Without dead ends: 18 [2021-10-24 09:54:08,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-24 09:54:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-24 09:54:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-24 09:54:08,392 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2021-10-24 09:54:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:08,392 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-24 09:54:08,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-24 09:54:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:54:08,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:08,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:08,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:08,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:08,594 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-24 09:54:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:08,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812391, now seen corresponding path program 1 times [2021-10-24 09:54:08,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:08,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696571295] [2021-10-24 09:54:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:08,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:08,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:08,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:08,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:54:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:08,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:54:08,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:08,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:08,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:08,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696571295] [2021-10-24 09:54:08,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696571295] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:08,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:08,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:54:08,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686327825] [2021-10-24 09:54:08,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:08,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:08,750 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:08,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:08,793 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-24 09:54:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:54:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 [2021-10-24 09:54:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:08,795 INFO L225 Difference]: With dead ends: 22 [2021-10-24 09:54:08,795 INFO L226 Difference]: Without dead ends: 22 [2021-10-24 09:54:08,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-24 09:54:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-10-24 09:54:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-24 09:54:08,798 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2021-10-24 09:54:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:08,798 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-24 09:54:08,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-24 09:54:08,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:54:08,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:08,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:08,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:09,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:09,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-24 09:54:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:09,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787124, now seen corresponding path program 1 times [2021-10-24 09:54:09,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:09,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825623962] [2021-10-24 09:54:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:09,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:09,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:09,005 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:09,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:54:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:54:09,067 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:54:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:54:09,105 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 09:54:09,105 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:54:09,106 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 09:54:09,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 09:54:09,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 09:54:09,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 09:54:09,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 09:54:09,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 09:54:09,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 09:54:09,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:09,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:09,330 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:54:09,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:54:09 BoogieIcfgContainer [2021-10-24 09:54:09,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:54:09,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:54:09,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:54:09,348 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:54:09,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:54:06" (3/4) ... [2021-10-24 09:54:09,351 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:54:09,386 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:54:09,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:54:09,390 INFO L168 Benchmark]: Toolchain (without parser) took 3843.20 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 38.9 MB in the beginning and 32.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:09,392 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:54:09,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.89 ms. Allocated memory is still 65.0 MB. Free memory was 38.6 MB in the beginning and 29.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:09,395 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.57 ms. Allocated memory is still 65.0 MB. Free memory was 29.8 MB in the beginning and 45.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:09,396 INFO L168 Benchmark]: Boogie Preprocessor took 40.29 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 44.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:09,396 INFO L168 Benchmark]: RCFGBuilder took 330.96 ms. Allocated memory is still 65.0 MB. Free memory was 44.1 MB in the beginning and 33.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:09,397 INFO L168 Benchmark]: TraceAbstraction took 2568.58 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.3 MB in the beginning and 35.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:09,397 INFO L168 Benchmark]: Witness Printer took 38.57 ms. Allocated memory is still 79.7 MB. Free memory was 34.4 MB in the beginning and 32.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:54:09,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 772.89 ms. Allocated memory is still 65.0 MB. Free memory was 38.6 MB in the beginning and 29.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.57 ms. Allocated memory is still 65.0 MB. Free memory was 29.8 MB in the beginning and 45.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.29 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 44.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 330.96 ms. Allocated memory is still 65.0 MB. Free memory was 44.1 MB in the beginning and 33.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2568.58 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.3 MB in the beginning and 35.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 38.57 ms. Allocated memory is still 79.7 MB. Free memory was 34.4 MB in the beginning and 32.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 760]: 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) }; VAL [ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] free(p) VAL [ldv_global_msg_list={-2147483648:0}] [L759] free(p) VAL [ldv_global_msg_list={-2147483648:0}] [L759] free(p) [L760] free(p) VAL [ldv_global_msg_list={-2147483648:0}] [L760] free(p) VAL [ldv_global_msg_list={-2147483648:0}] [L760] free(p) VAL [ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: 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, 20 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2477.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 26.9ms, AutomataDifference: 325.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 88 SDslu, 33 SDs, 0 SdLazy, 71 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 129.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 202.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.2ms SsaConstructionTime, 79.5ms SatisfiabilityAnalysisTime, 514.7ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 4 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-10-24 09:54:09,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0b079d-7724-40d5-a9c6-d68745e985d0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...