./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta --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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:23:14,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:14,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:14,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:14,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:14,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:14,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:14,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:14,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:14,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:14,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:14,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:14,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:14,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:14,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:14,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:14,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:14,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:14,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:14,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:14,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:14,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:14,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:14,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:14,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:14,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:14,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:14,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:14,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:14,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:14,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:14,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:14,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:14,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:14,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:14,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:14,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:14,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:14,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:14,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:14,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:15,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-10-17 17:23:15,030 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:15,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:15,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:15,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:15,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:15,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:15,033 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:15,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:15,034 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:15,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:23:15,035 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:15,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:15,036 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:23:15,036 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:23:15,037 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:15,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:23:15,037 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:23:15,037 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:23:15,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:23:15,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:23:15,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:15,039 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:23:15,039 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:23:15,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:23:15,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:23:15,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:15,040 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:23:15,041 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:23:15,041 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:23:15,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:15,042 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:23:15,042 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:23:15,042 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:15,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:15,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:15,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:15,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:15,044 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:23:15,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:15,044 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:23:15,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:23:15,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:15,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2022-10-17 17:23:15,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:15,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:15,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:15,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:15,433 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:15,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-10-17 17:23:15,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data/1da9c3930/f85917a596434dab836aacfb8c5f28fe/FLAG6a926cae0 [2022-10-17 17:23:16,033 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:16,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-10-17 17:23:16,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data/1da9c3930/f85917a596434dab836aacfb8c5f28fe/FLAG6a926cae0 [2022-10-17 17:23:16,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data/1da9c3930/f85917a596434dab836aacfb8c5f28fe [2022-10-17 17:23:16,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:16,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:16,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:16,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:16,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:16,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:16" (1/1) ... [2022-10-17 17:23:16,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a701ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:16, skipping insertion in model container [2022-10-17 17:23:16,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:16" (1/1) ... [2022-10-17 17:23:16,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:16,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:16,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:16,630 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-10-17 17:23:16,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78376910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:16, skipping insertion in model container [2022-10-17 17:23:16,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:16,632 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 17:23:16,637 INFO L158 Benchmark]: Toolchain (without parser) took 258.79ms. Allocated memory is still 115.3MB. Free memory was 80.5MB in the beginning and 91.9MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:23:16,640 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory was 87.0MB in the beginning and 87.0MB in the end (delta: 31.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:16,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.83ms. Allocated memory is still 115.3MB. Free memory was 80.2MB in the beginning and 91.9MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:23:16,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory was 87.0MB in the beginning and 87.0MB in the end (delta: 31.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.83ms. Allocated memory is still 115.3MB. Free memory was 80.2MB in the beginning and 91.9MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta --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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:23:19,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:19,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:19,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:19,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:19,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:19,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:19,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:19,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:19,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:19,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:19,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:19,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:19,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:19,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:19,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:19,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:19,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:19,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:19,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:19,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:19,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:19,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:19,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:19,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:19,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:19,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:19,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:19,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:19,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:19,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:19,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:19,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:19,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:19,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:19,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:19,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:19,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:19,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:19,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:19,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:19,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-10-17 17:23:19,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:19,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:19,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:19,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:19,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:19,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:19,244 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:19,245 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:19,245 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:19,245 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:19,246 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:19,246 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:19,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:23:19,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:23:19,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:19,248 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:23:19,248 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:23:19,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:23:19,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:23:19,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:19,249 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:23:19,249 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:23:19,249 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:23:19,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:19,250 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:23:19,250 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:23:19,250 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:23:19,251 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:23:19,251 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:19,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:19,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:23:19,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:19,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:19,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:19,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:19,253 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:23:19,253 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:23:19,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:19,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:23:19,254 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_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2022-10-17 17:23:19,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:19,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:19,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:19,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:19,748 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:19,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-10-17 17:23:19,828 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data/77bf5ab10/64e5450df6c343ef9ed34605f9ffc250/FLAGf24bebb01 [2022-10-17 17:23:20,368 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:20,370 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-10-17 17:23:20,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data/77bf5ab10/64e5450df6c343ef9ed34605f9ffc250/FLAGf24bebb01 [2022-10-17 17:23:20,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/data/77bf5ab10/64e5450df6c343ef9ed34605f9ffc250 [2022-10-17 17:23:20,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:20,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:20,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:20,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:20,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:20,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:20" (1/1) ... [2022-10-17 17:23:20,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a4b1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:20, skipping insertion in model container [2022-10-17 17:23:20,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:20" (1/1) ... [2022-10-17 17:23:20,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:20,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:20,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:20,906 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 17:23:20,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:20,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:20,921 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:20,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:21,020 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:21,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21 WrapperNode [2022-10-17 17:23:21,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:21,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:21,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:21,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:21,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,080 INFO L138 Inliner]: procedures = 11, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2022-10-17 17:23:21,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:21,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:21,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:21,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:21,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,133 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:21,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:21,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:21,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:21,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (1/1) ... [2022-10-17 17:23:21,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:21,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:21,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:21,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:23:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:23:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:23:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:23:21,328 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:21,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:21,567 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:21,574 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:21,574 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:23:21,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:21 BoogieIcfgContainer [2022-10-17 17:23:21,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:21,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:21,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:21,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:21,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:20" (1/3) ... [2022-10-17 17:23:21,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485aa233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:21, skipping insertion in model container [2022-10-17 17:23:21,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:21" (2/3) ... [2022-10-17 17:23:21,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485aa233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:21, skipping insertion in model container [2022-10-17 17:23:21,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:21" (3/3) ... [2022-10-17 17:23:21,587 INFO L112 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2022-10-17 17:23:21,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:21,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-10-17 17:23:21,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:21,736 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60d6e8c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:21,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 17:23:21,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 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) [2022-10-17 17:23:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:23:21,762 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:21,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-17 17:23:21,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-17 17:23:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2022-10-17 17:23:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865027852] [2022-10-17 17:23:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:21,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:21,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:21,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:21,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:23:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:21,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:23:21,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:22,066 INFO L390 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 7 [2022-10-17 17:23:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:22,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:22,103 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:22,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865027852] [2022-10-17 17:23:22,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865027852] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:22,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:22,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:23:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431103100] [2022-10-17 17:23:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:22,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:22,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:22,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:22,159 INFO L87 Difference]: Start difference. First operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-17 17:23:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:22,215 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-10-17 17:23:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:22,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-10-17 17:23:22,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:22,226 INFO L225 Difference]: With dead ends: 12 [2022-10-17 17:23:22,226 INFO L226 Difference]: Without dead ends: 10 [2022-10-17 17:23:22,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:22,232 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:22,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:23:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-10-17 17:23:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-10-17 17:23:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-10-17 17:23:22,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2022-10-17 17:23:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:22,265 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-10-17 17:23:22,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-17 17:23:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-10-17 17:23:22,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:23:22,266 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:22,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-17 17:23:22,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-10-17 17:23:22,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:22,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-17 17:23:22,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-10-17 17:23:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:22,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232538860] [2022-10-17 17:23:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:22,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:22,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:22,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:22,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:23:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:22,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:23:22,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:22,559 INFO L390 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 [2022-10-17 17:23:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:22,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:22,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:22,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232538860] [2022-10-17 17:23:22,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232538860] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:22,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:22,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:23:22,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570250161] [2022-10-17 17:23:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:22,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:22,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:22,595 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-17 17:23:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:22,632 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-10-17 17:23:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:22,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-10-17 17:23:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:22,633 INFO L225 Difference]: With dead ends: 16 [2022-10-17 17:23:22,634 INFO L226 Difference]: Without dead ends: 16 [2022-10-17 17:23:22,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:22,636 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:22,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:23:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-17 17:23:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2022-10-17 17:23:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-10-17 17:23:22,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2022-10-17 17:23:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:22,641 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-10-17 17:23:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-17 17:23:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-10-17 17:23:22,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:23:22,642 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:22,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:22,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:22,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:22,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-17 17:23:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:22,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2022-10-17 17:23:22,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:22,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389360280] [2022-10-17 17:23:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:22,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:22,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:22,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:22,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:23:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:22,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:23:22,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:23,055 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:23:23,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-10-17 17:23:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:23,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:23,094 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:23,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389360280] [2022-10-17 17:23:23,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389360280] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:23,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:23,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284983065] [2022-10-17 17:23:23,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:23,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:23,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:23,100 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.75) 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) [2022-10-17 17:23:23,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:23,162 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-10-17 17:23:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:23:23,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) 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 [2022-10-17 17:23:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:23,164 INFO L225 Difference]: With dead ends: 13 [2022-10-17 17:23:23,164 INFO L226 Difference]: Without dead ends: 13 [2022-10-17 17:23:23,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:23,173 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:23,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-10-17 17:23:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-10-17 17:23:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-10-17 17:23:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 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) [2022-10-17 17:23:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-10-17 17:23:23,183 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-10-17 17:23:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:23,183 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-10-17 17:23:23,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) 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) [2022-10-17 17:23:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-10-17 17:23:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:23:23,186 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:23,186 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-10-17 17:23:23,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:23,405 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-17 17:23:23,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1810603474, now seen corresponding path program 1 times [2022-10-17 17:23:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:23,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409747102] [2022-10-17 17:23:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:23,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:23,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:23,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:23,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:23:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:23,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:23:23,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:23,525 INFO L390 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 [2022-10-17 17:23:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:23,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:24,059 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:24,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409747102] [2022-10-17 17:23:24,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409747102] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:24,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1620691132] [2022-10-17 17:23:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:24,060 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-10-17 17:23:24,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 [2022-10-17 17:23:24,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-10-17 17:23:24,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-10-17 17:23:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:24,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:23:24,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:24,184 INFO L390 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 [2022-10-17 17:23:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:24,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:24,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1620691132] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:24,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526832516] [2022-10-17 17:23:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:24,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:24,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:24,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:24,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 17:23:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:24,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:23:24,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:24,548 INFO L390 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 [2022-10-17 17:23:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:24,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:24,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526832516] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:24,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-10-17 17:23:24,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 5 [2022-10-17 17:23:24,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181450073] [2022-10-17 17:23:24,772 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-10-17 17:23:24,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:23:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:23:24,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:23:24,775 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:24,855 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-10-17 17:23:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:23:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 17:23:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:24,861 INFO L225 Difference]: With dead ends: 22 [2022-10-17 17:23:24,861 INFO L226 Difference]: Without dead ends: 22 [2022-10-17 17:23:24,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:23:24,863 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:24,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:23:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-17 17:23:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2022-10-17 17:23:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 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) [2022-10-17 17:23:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-10-17 17:23:24,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2022-10-17 17:23:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:24,866 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-10-17 17:23:24,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:24,867 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-10-17 17:23:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:23:24,867 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:24,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:24,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-17 17:23:25,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-10-17 17:23:25,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:25,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:25,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-17 17:23:25,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2022-10-17 17:23:25,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:25,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268421087] [2022-10-17 17:23:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:25,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:25,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:25,471 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:25,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 17:23:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:25,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:23:25,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:25,631 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:23:25,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-10-17 17:23:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:25,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:25,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:25,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268421087] [2022-10-17 17:23:25,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268421087] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:25,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [750681067] [2022-10-17 17:23:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:25,869 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-10-17 17:23:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 [2022-10-17 17:23:25,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-10-17 17:23:25,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-10-17 17:23:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:25,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:23:25,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:26,046 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:23:26,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-10-17 17:23:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:26,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:26,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [750681067] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:26,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197571982] [2022-10-17 17:23:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:26,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:26,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:26,152 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:26,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 17:23:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:26,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:23:26,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:26,286 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:23:26,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-10-17 17:23:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:26,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:26,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197571982] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:26,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-10-17 17:23:26,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-10-17 17:23:26,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979673054] [2022-10-17 17:23:26,394 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-10-17 17:23:26,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:23:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:23:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:23:26,396 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-10-17 17:23:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:26,586 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-10-17 17:23:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:23:26,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 17:23:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:26,589 INFO L225 Difference]: With dead ends: 16 [2022-10-17 17:23:26,589 INFO L226 Difference]: Without dead ends: 16 [2022-10-17 17:23:26,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-10-17 17:23:26,597 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:26,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-10-17 17:23:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-17 17:23:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-17 17:23:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-10-17 17:23:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-10-17 17:23:26,600 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2022-10-17 17:23:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:26,601 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-10-17 17:23:26,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-10-17 17:23:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-10-17 17:23:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:23:26,602 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:26,602 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2022-10-17 17:23:26,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-10-17 17:23:26,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-10-17 17:23:27,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:27,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:27,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-17 17:23:27,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:27,208 INFO L85 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 2 times [2022-10-17 17:23:27,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:27,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435853863] [2022-10-17 17:23:27,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 17:23:27,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:27,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:27,209 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:27,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 17:23:27,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 17:23:27,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-10-17 17:23:27,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:23:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:23:27,367 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-10-17 17:23:27,367 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:23:27,368 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2022-10-17 17:23:27,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2022-10-17 17:23:27,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2022-10-17 17:23:27,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:27,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:27,575 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-10-17 17:23:27,579 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:23:27,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:23:27 BoogieIcfgContainer [2022-10-17 17:23:27,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:23:27,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:23:27,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:23:27,604 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:23:27,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:21" (3/4) ... [2022-10-17 17:23:27,606 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:23:27,645 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:23:27,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:23:27,646 INFO L158 Benchmark]: Toolchain (without parser) took 6928.88ms. Allocated memory was 71.3MB in the beginning and 98.6MB in the end (delta: 27.3MB). Free memory was 53.1MB in the beginning and 68.2MB in the end (delta: -15.1MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-10-17 17:23:27,646 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 71.3MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:27,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.29ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 53.4MB in the end (delta: -564.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:23:27,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.09ms. Allocated memory is still 71.3MB. Free memory was 53.4MB in the beginning and 51.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:27,647 INFO L158 Benchmark]: Boogie Preprocessor took 62.46ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 50.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:23:27,648 INFO L158 Benchmark]: RCFGBuilder took 430.92ms. Allocated memory is still 71.3MB. Free memory was 50.3MB in the beginning and 39.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:23:27,648 INFO L158 Benchmark]: TraceAbstraction took 6023.55ms. Allocated memory was 71.3MB in the beginning and 98.6MB in the end (delta: 27.3MB). Free memory was 38.8MB in the beginning and 70.3MB in the end (delta: -31.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:27,649 INFO L158 Benchmark]: Witness Printer took 41.97ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 68.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:23:27,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 71.3MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.29ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 53.4MB in the end (delta: -564.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.09ms. Allocated memory is still 71.3MB. Free memory was 53.4MB in the beginning and 51.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.46ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 50.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.92ms. Allocated memory is still 71.3MB. Free memory was 50.3MB in the beginning and 39.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6023.55ms. Allocated memory was 71.3MB in the beginning and 98.6MB in the end (delta: 27.3MB). Free memory was 38.8MB in the beginning and 70.3MB in the end (delta: -31.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.97ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 68.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; [L15] CALL areNatural((int*) numbers) [L2] int i = 0; VAL [i=0, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={3:0}, numbers={3:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={3:0}, numbers={3:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={3:0}, numbers={3:0}] [L4] numbers[i] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: 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, 13 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 42 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=5, InterpolantAutomatonStates: 21, 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, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 102 ConstructedInterpolants, 4 QuantifiedInterpolants, 1609 SizeOfPredicates, 53 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 0/30 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! [2022-10-17 17:23:27,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06aa8311-35f7-4fc3-a1d5-dc4c92fe34c5/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)