./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:44:03,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:44:03,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:44:03,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:44:03,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:44:03,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:44:03,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:44:03,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:44:03,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:44:03,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:44:03,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:44:03,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:44:03,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:44:03,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:44:03,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:44:03,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:44:03,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:44:03,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:44:03,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:44:03,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:44:03,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:44:03,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:44:03,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:44:03,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:44:03,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:44:03,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:44:03,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:44:03,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:44:03,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:44:03,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:44:03,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:44:03,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:44:03,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:44:03,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:44:03,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:44:03,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:44:03,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:44:03,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:44:03,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:44:03,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:44:03,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:44:03,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 04:44:03,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:44:03,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:44:03,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:44:03,311 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:44:03,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:44:03,312 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:44:03,312 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:44:03,312 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:44:03,313 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:44:03,313 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:44:03,315 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:44:03,315 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:44:03,315 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:44:03,316 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:44:03,316 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:44:03,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 04:44:03,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 04:44:03,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:44:03,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:44:03,319 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 04:44:03,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:44:03,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:44:03,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:44:03,320 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 04:44:03,321 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 04:44:03,321 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 04:44:03,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:44:03,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:44:03,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:44:03,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:44:03,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:44:03,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:44:03,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:44:03,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:44:03,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:44:03,326 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:44:03,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:44:03,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:44:03,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:44:03,328 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2021-10-29 04:44:03,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:44:03,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:44:03,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:44:03,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:44:03,714 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:44:03,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-29 04:44:03,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data/907354a91/36918697ff7644ffbd88e636be0ccff6/FLAGa4d893204 [2021-10-29 04:44:04,373 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:44:04,374 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-29 04:44:04,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data/907354a91/36918697ff7644ffbd88e636be0ccff6/FLAGa4d893204 [2021-10-29 04:44:04,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data/907354a91/36918697ff7644ffbd88e636be0ccff6 [2021-10-29 04:44:04,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:44:04,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:44:04,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:44:04,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:44:04,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:44:04,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:44:04" (1/1) ... [2021-10-29 04:44:04,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309c4e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:04, skipping insertion in model container [2021-10-29 04:44:04,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:44:04" (1/1) ... [2021-10-29 04:44:04,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:44:04,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:44:05,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:44:05,028 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-29 04:44:05,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d899b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:05, skipping insertion in model container [2021-10-29 04:44:05,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:44:05,030 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 04:44:05,034 INFO L168 Benchmark]: Toolchain (without parser) took 292.78 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 48.4 MB in the beginning and 96.5 MB in the end (delta: -48.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:05,035 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 56.5 MB in the beginning and 56.5 MB in the end (delta: 30.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:44:05,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.15 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 48.2 MB in the beginning and 96.5 MB in the end (delta: -48.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:05,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 56.5 MB in the beginning and 56.5 MB in the end (delta: 30.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.15 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 48.2 MB in the beginning and 96.5 MB in the end (delta: -48.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:44:07,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:44:07,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:44:07,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:44:07,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:44:07,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:44:07,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:44:07,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:44:07,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:44:07,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:44:07,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:44:07,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:44:07,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:44:07,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:44:07,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:44:07,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:44:07,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:44:07,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:44:07,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:44:08,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:44:08,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:44:08,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:44:08,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:44:08,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:44:08,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:44:08,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:44:08,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:44:08,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:44:08,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:44:08,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:44:08,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:44:08,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:44:08,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:44:08,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:44:08,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:44:08,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:44:08,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:44:08,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:44:08,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:44:08,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:44:08,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:44:08,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 04:44:08,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:44:08,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:44:08,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:44:08,103 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:44:08,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:44:08,104 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:44:08,105 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:44:08,105 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:44:08,105 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:44:08,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 04:44:08,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 04:44:08,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:44:08,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:44:08,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 04:44:08,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:44:08,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:44:08,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:44:08,111 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 04:44:08,112 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 04:44:08,112 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 04:44:08,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:44:08,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:44:08,113 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:44:08,114 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:44:08,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:44:08,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:44:08,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:44:08,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:44:08,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:44:08,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:44:08,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:44:08,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:44:08,118 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:44:08,118 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:44:08,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:44:08,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:44:08,119 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_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2021-10-29 04:44:08,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:44:08,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:44:08,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:44:08,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:44:08,622 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:44:08,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-29 04:44:08,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data/932991de3/f24c6ee24fef4258bda4f003e2a116e4/FLAGc0d001daa [2021-10-29 04:44:09,361 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:44:09,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-29 04:44:09,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data/932991de3/f24c6ee24fef4258bda4f003e2a116e4/FLAGc0d001daa [2021-10-29 04:44:09,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/data/932991de3/f24c6ee24fef4258bda4f003e2a116e4 [2021-10-29 04:44:09,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:44:09,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:44:09,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:44:09,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:44:09,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:44:09,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:09,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582b31ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09, skipping insertion in model container [2021-10-29 04:44:09,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:09,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:44:09,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:44:09,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:44:09,926 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 04:44:09,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:44:09,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:44:09,942 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:44:09,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:44:09,987 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:44:09,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09 WrapperNode [2021-10-29 04:44:09,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:44:09,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:44:09,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:44:09,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:44:10,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:44:10,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:44:10,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:44:10,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:44:10,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:44:10,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:44:10,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:44:10,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:44:10,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (1/1) ... [2021-10-29 04:44:10,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:44:10,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:44:10,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:44:10,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 04:44:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:44:10,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:44:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:44:10,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:44:10,629 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:44:10,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:44:10 BoogieIcfgContainer [2021-10-29 04:44:10,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:44:10,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:44:10,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:44:10,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:44:10,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:44:09" (1/3) ... [2021-10-29 04:44:10,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4857fae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:44:10, skipping insertion in model container [2021-10-29 04:44:10,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:44:09" (2/3) ... [2021-10-29 04:44:10,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4857fae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:44:10, skipping insertion in model container [2021-10-29 04:44:10,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:44:10" (3/3) ... [2021-10-29 04:44:10,658 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2021-10-29 04:44:10,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:44:10,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 04:44:10,737 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:44:10,745 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:44:10,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 04:44:10,762 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) [2021-10-29 04:44:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 04:44:10,770 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:44:10,770 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 04:44:10,771 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 04:44:10,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:44:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2021-10-29 04:44:10,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:44:10,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773000589] [2021-10-29 04:44:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:10,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:44:10,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:44:10,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:44:10,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:44:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:11,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 04:44:11,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:11,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:44:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:11,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:11,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:44:11,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773000589] [2021-10-29 04:44:11,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773000589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:44:11,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:44:11,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:44:11,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112073200] [2021-10-29 04:44:11,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:44:11,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:44:11,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:44:11,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:44:11,310 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) [2021-10-29 04:44:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:44:11,372 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-29 04:44:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:44:11,375 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 [2021-10-29 04:44:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:44:11,389 INFO L225 Difference]: With dead ends: 12 [2021-10-29 04:44:11,390 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 04:44:11,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:44:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 04:44:11,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-29 04:44:11,453 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) [2021-10-29 04:44:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-29 04:44:11,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-10-29 04:44:11,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:44:11,457 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-29 04:44:11,458 INFO L471 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) [2021-10-29 04:44:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-29 04:44:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 04:44:11,459 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:44:11,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 04:44:11,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:11,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:44:11,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 04:44:11,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:44:11,680 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-10-29 04:44:11,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:44:11,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933538422] [2021-10-29 04:44:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:11,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:44:11,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:44:11,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:44:11,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:44:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:11,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:44:11,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:11,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:44:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:11,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:12,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:44:12,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933538422] [2021-10-29 04:44:12,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933538422] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:44:12,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:44:12,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 04:44:12,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266852063] [2021-10-29 04:44:12,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:44:12,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:44:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:44:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:44:12,151 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:44:12,265 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-29 04:44:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:44:12,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 04:44:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:44:12,269 INFO L225 Difference]: With dead ends: 22 [2021-10-29 04:44:12,269 INFO L226 Difference]: Without dead ends: 22 [2021-10-29 04:44:12,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:44:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-29 04:44:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2021-10-29 04:44:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-29 04:44:12,275 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 4 [2021-10-29 04:44:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:44:12,276 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-29 04:44:12,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-10-29 04:44:12,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:44:12,277 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:44:12,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:44:12,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:12,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:44:12,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 04:44:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:44:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2021-10-29 04:44:12,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:44:12,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44852197] [2021-10-29 04:44:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:12,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:44:12,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:44:12,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:44:12,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:44:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:12,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 04:44:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:12,694 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:44:12,694 INFO L388 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 [2021-10-29 04:44:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:12,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:12,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:44:12,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44852197] [2021-10-29 04:44:12,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44852197] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:44:12,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:44:12,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 04:44:12,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422059164] [2021-10-29 04:44:12,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:44:12,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:44:12,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:44:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:44:12,866 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:44:12,976 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-29 04:44:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:44:12,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 04:44:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:44:12,979 INFO L225 Difference]: With dead ends: 15 [2021-10-29 04:44:12,980 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 04:44:12,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:44:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 04:44:12,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 04:44:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 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) [2021-10-29 04:44:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-29 04:44:12,985 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2021-10-29 04:44:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:44:12,986 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-29 04:44:12,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:12,986 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-29 04:44:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:44:12,987 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:44:12,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:44:13,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:13,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:44:13,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 04:44:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:44:13,199 INFO L85 PathProgramCache]: Analyzing trace with hash 528133503, now seen corresponding path program 1 times [2021-10-29 04:44:13,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:44:13,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969388728] [2021-10-29 04:44:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:13,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:44:13,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:44:13,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:44:13,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 04:44:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:13,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:44:13,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:13,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:13,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:44:13,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969388728] [2021-10-29 04:44:13,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969388728] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:44:13,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [568826699] [2021-10-29 04:44:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:13,404 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:44:13,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:44:13,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:44:13,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-29 04:44:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:13,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:44:13,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:13,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:13,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [568826699] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:44:13,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859034402] [2021-10-29 04:44:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:13,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:44:13,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:44:13,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:44:13,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 04:44:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:13,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:44:13,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:13,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:13,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859034402] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:44:13,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:44:13,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-29 04:44:13,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566585586] [2021-10-29 04:44:13,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:44:13,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:44:13,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:44:13,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:44:13,849 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:44:13,974 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-10-29 04:44:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:44:13,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 04:44:13,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:44:13,976 INFO L225 Difference]: With dead ends: 30 [2021-10-29 04:44:13,976 INFO L226 Difference]: Without dead ends: 30 [2021-10-29 04:44:13,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:44:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-29 04:44:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-10-29 04:44:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-10-29 04:44:13,982 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2021-10-29 04:44:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:44:13,982 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-29 04:44:13,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-10-29 04:44:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:44:13,983 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:44:13,984 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 04:44:13,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-29 04:44:14,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:14,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:14,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:44:14,585 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 04:44:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:44:14,585 INFO L85 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2021-10-29 04:44:14,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:44:14,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555090649] [2021-10-29 04:44:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:14,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:44:14,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:44:14,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:44:14,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 04:44:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:14,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:44:14,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:14,893 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:44:14,895 INFO L388 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 [2021-10-29 04:44:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:14,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:15,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:44:15,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555090649] [2021-10-29 04:44:15,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555090649] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:44:15,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1516486103] [2021-10-29 04:44:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:15,199 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:44:15,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:44:15,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:44:15,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-29 04:44:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:15,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:44:15,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:15,545 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:44:15,546 INFO L388 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 [2021-10-29 04:44:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:15,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:15,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1516486103] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:44:15,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084737601] [2021-10-29 04:44:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:15,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:44:15,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:44:15,710 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:44:15,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-29 04:44:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:15,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:44:15,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:15,971 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:44:15,972 INFO L388 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 [2021-10-29 04:44:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:16,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:44:16,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084737601] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:44:16,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:44:16,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-29 04:44:16,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132750952] [2021-10-29 04:44:16,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:44:16,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:44:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:44:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:44:16,131 INFO L87 Difference]: Start difference. First operand 20 states and 24 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) [2021-10-29 04:44:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:44:16,357 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-29 04:44:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:44:16,358 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 [2021-10-29 04:44:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:44:16,359 INFO L225 Difference]: With dead ends: 20 [2021-10-29 04:44:16,359 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 04:44:16,359 INFO L786 BasicCegarLoop]: 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 [2021-10-29 04:44:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 04:44:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 04:44:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-29 04:44:16,364 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-10-29 04:44:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:44:16,364 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-29 04:44:16,364 INFO L471 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) [2021-10-29 04:44:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-29 04:44:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:44:16,365 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:44:16,365 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-10-29 04:44:16,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:16,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:16,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:16,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:44:16,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 04:44:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:44:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 1 times [2021-10-29 04:44:16,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:44:16,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775997839] [2021-10-29 04:44:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:16,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:44:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:44:16,972 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:44:16,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 04:44:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:44:17,123 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:44:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:44:17,218 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 04:44:17,219 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:44:17,220 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 04:44:17,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 04:44:17,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 04:44:17,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:17,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:44:17,428 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 04:44:17,433 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:44:17,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:44:17 BoogieIcfgContainer [2021-10-29 04:44:17,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:44:17,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:44:17,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:44:17,459 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:44:17,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:44:10" (3/4) ... [2021-10-29 04:44:17,462 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:44:17,545 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:44:17,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:44:17,547 INFO L168 Benchmark]: Toolchain (without parser) took 7841.17 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 51.9 MB in the beginning and 40.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:17,547 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 69.2 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:44:17,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.70 ms. Allocated memory is still 69.2 MB. Free memory was 51.7 MB in the beginning and 41.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:17,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.33 ms. Allocated memory is still 69.2 MB. Free memory was 41.4 MB in the beginning and 40.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:17,549 INFO L168 Benchmark]: Boogie Preprocessor took 55.76 ms. Allocated memory is still 69.2 MB. Free memory was 40.0 MB in the beginning and 38.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:44:17,550 INFO L168 Benchmark]: RCFGBuilder took 508.59 ms. Allocated memory is still 69.2 MB. Free memory was 38.7 MB in the beginning and 48.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:17,551 INFO L168 Benchmark]: TraceAbstraction took 6824.43 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 47.4 MB in the beginning and 42.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:17,551 INFO L168 Benchmark]: Witness Printer took 86.98 ms. Allocated memory is still 92.3 MB. Free memory was 42.0 MB in the beginning and 40.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:44:17,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 69.2 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.70 ms. Allocated memory is still 69.2 MB. Free memory was 51.7 MB in the beginning and 41.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.33 ms. Allocated memory is still 69.2 MB. Free memory was 41.4 MB in the beginning and 40.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.76 ms. Allocated memory is still 69.2 MB. Free memory was 40.0 MB in the beginning and 38.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 508.59 ms. Allocated memory is still 69.2 MB. Free memory was 38.7 MB in the beginning and 48.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6824.43 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 47.4 MB in the beginning and 42.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. * Witness Printer took 86.98 ms. Allocated memory is still 92.3 MB. Free memory was 42.0 MB in the beginning and 40.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 4]: 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}; [L2] int i = 0; [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] numbers[i] - UnprovableResult [Line: 4]: 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: 6.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 50 SDslu, 69 SDs, 0 SdLazy, 99 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=4, InterpolantAutomatonStates: 23, 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, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 126 ConstructedInterpolants, 4 QuantifiedInterpolants, 1316 SizeOfPredicates, 45 NumberOfNonLiveVariables, 370 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:44:17,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c04c65-bae1-4f2c-a9a8-f9ab113fa456/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...