./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:39:11,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:39:11,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:39:11,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:39:11,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:39:11,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:39:11,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:39:11,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:39:11,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:39:11,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:39:11,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:39:11,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:39:11,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:39:11,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:39:11,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:39:11,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:39:11,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:39:11,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:39:11,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:39:11,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:39:11,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:39:11,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:39:11,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:39:11,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:39:11,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:39:11,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:39:11,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:39:11,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:39:11,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:39:11,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:39:11,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:39:11,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:39:11,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:39:11,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:39:11,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:39:11,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:39:11,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:39:11,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:39:11,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:39:11,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:39:11,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:39:11,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:39:11,312 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:39:11,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:39:11,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:39:11,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:39:11,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:39:11,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:39:11,314 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:39:11,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:39:11,315 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:39:11,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:39:11,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:39:11,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:39:11,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:39:11,316 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:39:11,316 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:39:11,316 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:39:11,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:39:11,317 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:39:11,317 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:39:11,317 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:39:11,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:39:11,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:39:11,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:39:11,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:39:11,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:39:11,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:39:11,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:39:11,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:39:11,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:39:11,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf [2021-11-09 09:39:11,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:39:11,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:39:11,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:39:11,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:39:11,674 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:39:11,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-11-09 09:39:11,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data/075e1b414/9ad5b92465974a3b926359734c25a10a/FLAG0084f9ed3 [2021-11-09 09:39:12,501 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:39:12,502 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-11-09 09:39:12,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data/075e1b414/9ad5b92465974a3b926359734c25a10a/FLAG0084f9ed3 [2021-11-09 09:39:12,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data/075e1b414/9ad5b92465974a3b926359734c25a10a [2021-11-09 09:39:12,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:39:12,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:39:12,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:39:12,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:39:12,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:39:12,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:39:12" (1/1) ... [2021-11-09 09:39:12,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596af6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:12, skipping insertion in model container [2021-11-09 09:39:12,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:39:12" (1/1) ... [2021-11-09 09:39:12,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:39:12,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:39:13,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:39:13,298 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) [2021-11-09 09:39:13,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2bf91ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:13, skipping insertion in model container [2021-11-09 09:39:13,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:39:13,300 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 09:39:13,303 INFO L168 Benchmark]: Toolchain (without parser) took 549.84 ms. Allocated memory is still 107.0 MB. Free memory was 77.6 MB in the beginning and 66.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:39:13,305 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:39:13,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.02 ms. Allocated memory is still 107.0 MB. Free memory was 77.4 MB in the beginning and 66.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:39:13,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.02 ms. Allocated memory is still 107.0 MB. Free memory was 77.4 MB in the beginning and 66.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:39:16,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:39:16,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:39:16,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:39:16,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:39:16,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:39:16,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:39:16,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:39:16,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:39:16,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:39:16,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:39:16,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:39:16,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:39:16,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:39:16,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:39:16,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:39:16,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:39:16,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:39:16,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:39:16,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:39:16,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:39:16,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:39:16,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:39:16,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:39:16,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:39:16,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:39:16,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:39:16,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:39:16,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:39:16,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:39:16,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:39:16,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:39:16,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:39:16,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:39:16,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:39:16,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:39:16,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:39:16,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:39:16,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:39:16,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:39:16,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:39:16,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 09:39:16,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:39:16,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:39:16,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:39:16,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:39:16,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:39:16,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:39:16,359 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:39:16,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:39:16,361 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:39:16,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:39:16,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:39:16,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:39:16,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:39:16,363 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:39:16,364 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:39:16,364 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:39:16,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:39:16,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:39:16,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:39:16,365 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:39:16,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:39:16,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:39:16,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:39:16,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:39:16,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:39:16,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:39:16,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:39:16,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:39:16,368 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:39:16,368 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:39:16,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:39:16,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:39:16,369 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_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf [2021-11-09 09:39:16,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:39:16,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:39:16,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:39:16,894 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:39:16,895 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:39:16,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-11-09 09:39:16,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data/61b2a716b/ecef6daa17f24c70a7d11720edba89e2/FLAGa87a5f76c [2021-11-09 09:39:17,759 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:39:17,761 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-11-09 09:39:17,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data/61b2a716b/ecef6daa17f24c70a7d11720edba89e2/FLAGa87a5f76c [2021-11-09 09:39:17,994 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/data/61b2a716b/ecef6daa17f24c70a7d11720edba89e2 [2021-11-09 09:39:17,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:39:17,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:39:18,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:39:18,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:39:18,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:39:18,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:39:17" (1/1) ... [2021-11-09 09:39:18,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36aba04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18, skipping insertion in model container [2021-11-09 09:39:18,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:39:17" (1/1) ... [2021-11-09 09:39:18,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:39:18,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:39:18,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:39:18,506 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 09:39:18,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:39:18,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:39:18,594 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:39:18,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:39:18,702 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:39:18,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18 WrapperNode [2021-11-09 09:39:18,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:39:18,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:39:18,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:39:18,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:39:18,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (1/1) ... [2021-11-09 09:39:18,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (1/1) ... [2021-11-09 09:39:18,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (1/1) ... [2021-11-09 09:39:18,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (1/1) ... [2021-11-09 09:39:18,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (1/1) ... [2021-11-09 09:39:18,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (1/1) ... [2021-11-09 09:39:18,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (1/1) ... [2021-11-09 09:39:18,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:39:18,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:39:18,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:39:18,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:39:18,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (1/1) ... [2021-11-09 09:39:18,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:39:18,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:39:18,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:39:18,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:39:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:39:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:39:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:39:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:39:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:39:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 09:39:18,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 09:39:18,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 09:39:18,938 INFO L138 BoogieDeclarations]: Found implementation of procedure expandArray [2021-11-09 09:39:18,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:39:18,939 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2021-11-09 09:39:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:39:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:39:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:39:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:39:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:39:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:39:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:39:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:39:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:39:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:39:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:39:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:39:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:39:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:39:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:39:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:39:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:39:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:39:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 09:39:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 09:39:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 09:39:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:39:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:39:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:39:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:39:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:39:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:39:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:39:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:39:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:39:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:39:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:39:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:39:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:39:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:39:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:39:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:39:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:39:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:39:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:39:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:39:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:39:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:39:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:39:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:39:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:39:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:39:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:39:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:39:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:39:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:39:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:39:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:39:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:39:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:39:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:39:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:39:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:39:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:39:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:39:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:39:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:39:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:39:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:39:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:39:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:39:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:39:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:39:18,954 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:39:18,962 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:39:18,962 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:39:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:39:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:39:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:39:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:39:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:39:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:39:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:39:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:39:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:39:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:39:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:39:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:39:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:39:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:39:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:39:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:39:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:39:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:39:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:39:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:39:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:39:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:39:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:39:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:39:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:39:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:39:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:39:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:39:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:39:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:39:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:39:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:39:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:39:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:39:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:39:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:39:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 09:39:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure expandArray [2021-11-09 09:39:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2021-11-09 09:39:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:39:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:39:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:39:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:39:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:39:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:39:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:39:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:39:19,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:39:19,614 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-09 09:39:19,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:39:19 BoogieIcfgContainer [2021-11-09 09:39:19,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:39:19,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:39:19,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:39:19,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:39:19,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:39:17" (1/3) ... [2021-11-09 09:39:19,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2daa09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:39:19, skipping insertion in model container [2021-11-09 09:39:19,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:18" (2/3) ... [2021-11-09 09:39:19,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2daa09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:39:19, skipping insertion in model container [2021-11-09 09:39:19,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:39:19" (3/3) ... [2021-11-09 09:39:19,632 INFO L111 eAbstractionObserver]: Analyzing ICFG array-realloc-1.i [2021-11-09 09:39:19,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:39:19,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-09 09:39:19,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:39:19,702 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 [2021-11-09 09:39:19,702 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-09 09:39:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.625) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:39:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 09:39:19,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:19,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:19,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:19,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1774917903, now seen corresponding path program 1 times [2021-11-09 09:39:19,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:19,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928689462] [2021-11-09 09:39:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:19,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:19,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:19,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:19,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:39:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:19,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:39:19,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:20,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:20,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:20,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928689462] [2021-11-09 09:39:20,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928689462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:20,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:20,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:39:20,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370530857] [2021-11-09 09:39:20,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:20,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:20,087 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.625) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:39:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:20,188 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-11-09 09:39:20,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:20,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-11-09 09:39:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:20,199 INFO L225 Difference]: With dead ends: 55 [2021-11-09 09:39:20,199 INFO L226 Difference]: Without dead ends: 51 [2021-11-09 09:39:20,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-09 09:39:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-11-09 09:39:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:39:20,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-11-09 09:39:20,246 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 8 [2021-11-09 09:39:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:20,246 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-11-09 09:39:20,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:39:20,246 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-11-09 09:39:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:39:20,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:20,247 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:20,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:20,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:20,459 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash -812119182, now seen corresponding path program 1 times [2021-11-09 09:39:20,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:20,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357076787] [2021-11-09 09:39:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:20,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:20,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:20,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:20,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:39:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:20,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:39:20,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:20,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:20,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:20,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357076787] [2021-11-09 09:39:20,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357076787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:20,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:20,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:39:20,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042543521] [2021-11-09 09:39:20,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:20,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:20,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:20,716 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:39:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:20,739 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-09 09:39:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:20,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-09 09:39:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:20,742 INFO L225 Difference]: With dead ends: 39 [2021-11-09 09:39:20,742 INFO L226 Difference]: Without dead ends: 39 [2021-11-09 09:39:20,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-09 09:39:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-09 09:39:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 31 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:39:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-11-09 09:39:20,757 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 9 [2021-11-09 09:39:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:20,758 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-11-09 09:39:20,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:39:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-11-09 09:39:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 09:39:20,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:20,761 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:20,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:20,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:20,986 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:20,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash -386852574, now seen corresponding path program 1 times [2021-11-09 09:39:20,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:20,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218973688] [2021-11-09 09:39:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:20,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:20,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:20,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:20,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:39:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:21,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:39:21,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:21,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:21,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:21,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218973688] [2021-11-09 09:39:21,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218973688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:21,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:21,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:39:21,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13447641] [2021-11-09 09:39:21,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:21,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:21,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:21,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:21,392 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:39:21,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:21,468 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-11-09 09:39:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:21,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-09 09:39:21,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:21,470 INFO L225 Difference]: With dead ends: 46 [2021-11-09 09:39:21,470 INFO L226 Difference]: Without dead ends: 46 [2021-11-09 09:39:21,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-09 09:39:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-11-09 09:39:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.48) internal successors, (37), 33 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:39:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-11-09 09:39:21,477 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2021-11-09 09:39:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:21,477 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-11-09 09:39:21,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:39:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-11-09 09:39:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:39:21,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:21,479 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:21,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:21,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:21,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -171591004, now seen corresponding path program 1 times [2021-11-09 09:39:21,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:21,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592362795] [2021-11-09 09:39:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:21,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:21,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:21,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:21,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:39:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:21,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:39:21,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:22,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:22,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:22,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592362795] [2021-11-09 09:39:22,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592362795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:22,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:22,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-09 09:39:22,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394112049] [2021-11-09 09:39:22,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:39:22,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:22,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:39:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:39:22,113 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:39:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:22,197 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-11-09 09:39:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:39:22,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-09 09:39:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:22,208 INFO L225 Difference]: With dead ends: 52 [2021-11-09 09:39:22,208 INFO L226 Difference]: Without dead ends: 52 [2021-11-09 09:39:22,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:39:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-09 09:39:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-11-09 09:39:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 36 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:39:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-11-09 09:39:22,229 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2021-11-09 09:39:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:22,229 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-11-09 09:39:22,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:39:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-11-09 09:39:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:39:22,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:22,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:22,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:22,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:22,441 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash -170667483, now seen corresponding path program 1 times [2021-11-09 09:39:22,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:22,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326890485] [2021-11-09 09:39:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:22,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:22,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:22,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:22,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:39:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:22,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:39:22,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:22,721 INFO L354 Elim1Store]: treesize reduction 10, result has 50.0 percent of original size [2021-11-09 09:39:22,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 16 [2021-11-09 09:39:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:22,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:22,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:22,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326890485] [2021-11-09 09:39:22,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326890485] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:22,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:22,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:39:22,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514929792] [2021-11-09 09:39:22,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:39:22,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:22,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:39:22,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:39:22,874 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:39:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:23,013 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-11-09 09:39:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:39:23,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-09 09:39:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:23,018 INFO L225 Difference]: With dead ends: 45 [2021-11-09 09:39:23,018 INFO L226 Difference]: Without dead ends: 45 [2021-11-09 09:39:23,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:39:23,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-09 09:39:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-11-09 09:39:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:39:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-09 09:39:23,024 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 17 [2021-11-09 09:39:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:23,029 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-09 09:39:23,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:39:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-09 09:39:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:39:23,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:23,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:23,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:23,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:23,253 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting expandArrayErr1REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:23,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash -170667482, now seen corresponding path program 1 times [2021-11-09 09:39:23,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:23,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376828920] [2021-11-09 09:39:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:23,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:23,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:23,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:23,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:39:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:23,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:39:23,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:23,538 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 [2021-11-09 09:39:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:23,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:24,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:24,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376828920] [2021-11-09 09:39:24,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376828920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:24,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:24,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-09 09:39:24,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984094590] [2021-11-09 09:39:24,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:39:24,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:39:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:39:24,482 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:39:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:26,388 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2021-11-09 09:39:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:39:26,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2021-11-09 09:39:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:26,391 INFO L225 Difference]: With dead ends: 121 [2021-11-09 09:39:26,391 INFO L226 Difference]: Without dead ends: 119 [2021-11-09 09:39:26,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:39:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-09 09:39:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 63. [2021-11-09 09:39:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 49 states have internal predecessors, (58), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 09:39:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-11-09 09:39:26,402 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 17 [2021-11-09 09:39:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:26,416 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-11-09 09:39:26,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:39:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-11-09 09:39:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:39:26,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:26,418 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:26,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:26,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:26,632 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:26,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:26,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2028589773, now seen corresponding path program 1 times [2021-11-09 09:39:26,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:26,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078224887] [2021-11-09 09:39:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:26,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:26,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:26,636 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:26,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:39:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:26,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:39:26,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:26,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:26,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:26,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078224887] [2021-11-09 09:39:26,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078224887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:26,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:26,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:39:26,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316191460] [2021-11-09 09:39:26,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:26,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:26,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:26,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:26,967 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:39:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:26,974 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-11-09 09:39:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-09 09:39:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:26,977 INFO L225 Difference]: With dead ends: 62 [2021-11-09 09:39:26,977 INFO L226 Difference]: Without dead ends: 62 [2021-11-09 09:39:26,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:26,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-09 09:39:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-09 09:39:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 48 states have internal predecessors, (57), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 09:39:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-11-09 09:39:26,986 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 17 [2021-11-09 09:39:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:26,986 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-11-09 09:39:26,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:39:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-11-09 09:39:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 09:39:26,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:26,988 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:27,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:27,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:27,202 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1538226398, now seen corresponding path program 1 times [2021-11-09 09:39:27,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:27,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591814874] [2021-11-09 09:39:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:27,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:27,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:27,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:39:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:27,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:39:27,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:27,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:27,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:27,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591814874] [2021-11-09 09:39:27,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591814874] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:27,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:27,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2021-11-09 09:39:27,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48109533] [2021-11-09 09:39:27,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:39:27,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:27,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:39:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:39:27,566 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:39:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:27,616 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-11-09 09:39:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:39:27,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2021-11-09 09:39:27,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:27,618 INFO L225 Difference]: With dead ends: 61 [2021-11-09 09:39:27,618 INFO L226 Difference]: Without dead ends: 61 [2021-11-09 09:39:27,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:39:27,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-09 09:39:27,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-09 09:39:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.302325581395349) internal successors, (56), 47 states have internal predecessors, (56), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 09:39:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-11-09 09:39:27,624 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 18 [2021-11-09 09:39:27,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:27,630 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-11-09 09:39:27,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:39:27,630 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-11-09 09:39:27,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 09:39:27,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:27,632 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:27,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:27,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:27,846 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash -440378001, now seen corresponding path program 1 times [2021-11-09 09:39:27,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:27,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983439654] [2021-11-09 09:39:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:27,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:27,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:27,850 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:27,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:39:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:28,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:39:28,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:28,053 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 [2021-11-09 09:39:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:28,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:28,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:28,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983439654] [2021-11-09 09:39:28,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983439654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:28,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:28,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 09:39:28,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484359768] [2021-11-09 09:39:28,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:39:28,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:39:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:39:28,346 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:39:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:28,469 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-11-09 09:39:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:39:28,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2021-11-09 09:39:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:28,471 INFO L225 Difference]: With dead ends: 74 [2021-11-09 09:39:28,471 INFO L226 Difference]: Without dead ends: 74 [2021-11-09 09:39:28,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:39:28,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-09 09:39:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-11-09 09:39:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 53 states have internal predecessors, (62), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-09 09:39:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-11-09 09:39:28,484 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 19 [2021-11-09 09:39:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:28,486 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-11-09 09:39:28,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:39:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-11-09 09:39:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-09 09:39:28,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:28,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:28,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:28,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:28,700 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:28,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash -766816059, now seen corresponding path program 1 times [2021-11-09 09:39:28,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:28,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991522810] [2021-11-09 09:39:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:28,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:28,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:28,701 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:28,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:39:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:28,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:39:28,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:29,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:29,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:29,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991522810] [2021-11-09 09:39:29,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991522810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:29,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:29,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-09 09:39:29,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197896058] [2021-11-09 09:39:29,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:39:29,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:29,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:39:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:39:29,237 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:39:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:29,385 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-11-09 09:39:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:39:29,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-11-09 09:39:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:29,387 INFO L225 Difference]: With dead ends: 60 [2021-11-09 09:39:29,387 INFO L226 Difference]: Without dead ends: 60 [2021-11-09 09:39:29,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:39:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-09 09:39:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-09 09:39:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 09:39:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-11-09 09:39:29,392 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 20 [2021-11-09 09:39:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:29,392 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-11-09 09:39:29,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:39:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-11-09 09:39:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:39:29,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:29,393 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:29,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:29,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:29,594 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1360467952, now seen corresponding path program 1 times [2021-11-09 09:39:29,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:29,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028775289] [2021-11-09 09:39:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:29,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:29,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:29,599 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:29,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:39:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:29,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:39:29,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:30,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:30,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:30,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028775289] [2021-11-09 09:39:30,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028775289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:30,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:30,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-11-09 09:39:30,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528358870] [2021-11-09 09:39:30,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:39:30,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:39:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:39:30,444 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:39:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:30,683 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-11-09 09:39:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:39:30,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-11-09 09:39:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:30,685 INFO L225 Difference]: With dead ends: 59 [2021-11-09 09:39:30,685 INFO L226 Difference]: Without dead ends: 59 [2021-11-09 09:39:30,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:39:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-09 09:39:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-09 09:39:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 09:39:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-11-09 09:39:30,691 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 22 [2021-11-09 09:39:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:30,691 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-11-09 09:39:30,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:39:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-11-09 09:39:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 09:39:30,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:30,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:30,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:30,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:30,903 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:30,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1753462742, now seen corresponding path program 1 times [2021-11-09 09:39:30,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:30,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085747389] [2021-11-09 09:39:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:30,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:30,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:30,906 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:30,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 09:39:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:31,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:39:31,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:31,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:31,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:31,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085747389] [2021-11-09 09:39:31,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085747389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:31,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:31,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 09:39:31,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389771797] [2021-11-09 09:39:31,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:39:31,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:39:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:39:31,384 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:39:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:31,453 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-11-09 09:39:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:39:31,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-09 09:39:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:31,455 INFO L225 Difference]: With dead ends: 59 [2021-11-09 09:39:31,455 INFO L226 Difference]: Without dead ends: 59 [2021-11-09 09:39:31,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:39:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-09 09:39:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-09 09:39:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 09:39:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2021-11-09 09:39:31,459 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 27 [2021-11-09 09:39:31,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:31,460 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2021-11-09 09:39:31,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:39:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2021-11-09 09:39:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 09:39:31,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:31,469 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:31,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:31,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:31,671 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:31,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash 64890135, now seen corresponding path program 1 times [2021-11-09 09:39:31,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:31,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488031279] [2021-11-09 09:39:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:31,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:31,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:31,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 09:39:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:31,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:39:31,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:39:32,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:39:32,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:32,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488031279] [2021-11-09 09:39:32,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488031279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:39:32,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:39:32,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-09 09:39:32,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817105241] [2021-11-09 09:39:32,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:39:32,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:39:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:39:32,236 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:39:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:32,375 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-11-09 09:39:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:39:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-11-09 09:39:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:32,377 INFO L225 Difference]: With dead ends: 65 [2021-11-09 09:39:32,378 INFO L226 Difference]: Without dead ends: 59 [2021-11-09 09:39:32,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:39:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-09 09:39:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-09 09:39:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 09:39:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-11-09 09:39:32,383 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 29 [2021-11-09 09:39:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:32,384 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-11-09 09:39:32,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:39:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-11-09 09:39:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 09:39:32,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:32,386 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:32,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:32,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:32,594 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:32,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:32,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1742564328, now seen corresponding path program 1 times [2021-11-09 09:39:32,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:32,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058375875] [2021-11-09 09:39:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:32,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:32,596 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:32,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 09:39:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:32,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:39:32,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:39:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:39:33,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:39:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:39:33,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:39:33,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058375875] [2021-11-09 09:39:33,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058375875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:33,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:33,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:39:33,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469100909] [2021-11-09 09:39:33,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:39:33,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:39:33,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:39:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:39:33,180 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:39:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:33,224 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-11-09 09:39:33,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:39:33,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-11-09 09:39:33,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:33,226 INFO L225 Difference]: With dead ends: 58 [2021-11-09 09:39:33,227 INFO L226 Difference]: Without dead ends: 58 [2021-11-09 09:39:33,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:39:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-09 09:39:33,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-11-09 09:39:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-09 09:39:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-11-09 09:39:33,230 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 29 [2021-11-09 09:39:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:33,231 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-11-09 09:39:33,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:39:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-11-09 09:39:33,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-09 09:39:33,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:33,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:33,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:33,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:33,443 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-11-09 09:39:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:33,444 INFO L85 PathProgramCache]: Analyzing trace with hash 188620705, now seen corresponding path program 1 times [2021-11-09 09:39:33,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:39:33,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619519714] [2021-11-09 09:39:33,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:33,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:39:33,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:39:33,446 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:39:33,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 09:39:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:39:33,706 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:39:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:39:33,809 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-09 09:39:33,809 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 09:39:33,810 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:39:33,812 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:39:33,813 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:39:33,813 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 09:39:33,813 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr0REQUIRES_VIOLATION [2021-11-09 09:39:33,813 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr1REQUIRES_VIOLATION [2021-11-09 09:39:33,814 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:39:33,814 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:39:33,814 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:39:33,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:39:34,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:39:34,026 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:34,029 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:39:34,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:39:34 BoogieIcfgContainer [2021-11-09 09:39:34,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:39:34,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:39:34,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:39:34,077 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:39:34,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:39:19" (3/4) ... [2021-11-09 09:39:34,080 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-09 09:39:34,150 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:39:34,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:39:34,151 INFO L168 Benchmark]: Toolchain (without parser) took 16152.57 ms. Allocated memory was 56.6 MB in the beginning and 92.3 MB in the end (delta: 35.7 MB). Free memory was 33.1 MB in the beginning and 34.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:39:34,152 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:39:34,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.43 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.0 MB in the beginning and 48.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:39:34,153 INFO L168 Benchmark]: Boogie Preprocessor took 142.60 ms. Allocated memory is still 75.5 MB. Free memory was 48.8 MB in the beginning and 46.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:39:34,153 INFO L168 Benchmark]: RCFGBuilder took 773.24 ms. Allocated memory is still 75.5 MB. Free memory was 46.0 MB in the beginning and 43.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-11-09 09:39:34,154 INFO L168 Benchmark]: TraceAbstraction took 14450.97 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 42.5 MB in the beginning and 38.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:39:34,154 INFO L168 Benchmark]: Witness Printer took 73.55 ms. Allocated memory is still 92.3 MB. Free memory was 38.2 MB in the beginning and 34.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:39:34,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 703.43 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.0 MB in the beginning and 48.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 142.60 ms. Allocated memory is still 75.5 MB. Free memory was 48.8 MB in the beginning and 46.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 773.24 ms. Allocated memory is still 75.5 MB. Free memory was 46.0 MB in the beginning and 43.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14450.97 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 42.5 MB in the beginning and 38.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * Witness Printer took 73.55 ms. Allocated memory is still 92.3 MB. Free memory was 38.2 MB in the beginning and 34.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 538]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L512] int num; [L513] int ind, newsize, i = 1; VAL [\old(i)=5, \old(ind)=6, \old(newsize)=7, \old(num)=9, i=1, ind=0, newsize=0, num=0] [L528] num = __VERIFIER_nondet_int() [L529] COND FALSE !(!(num > 0 && num < 100)) [L532] int *a = (int *)malloc(sizeof(int)); [L533] COND FALSE !(a == ((void *)0)) [L536] newsize = 0 VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=0, num=1] [L537] CALL expandArray(a) VAL [\old(newsize)=0, \old(num)=0, arg={1:0}, i=1, ind=0, newsize=0, num=1] [L515] int *a = (int *)arg; [L516] int *b = ((void *)0); VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=0, num=1] [L517] COND TRUE newsize < num [L518] newsize = newsize + 1 VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=1, num=1] [L519] EXPR, FCALL realloc(a, sizeof(int) * newsize) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=1, num=1, realloc(a, sizeof(int) * newsize)={1:0}] [L519] b = realloc(a, sizeof(int) * newsize) [L520] b[newsize - 1] = i VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L521] a = b VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L517] COND FALSE !(newsize < num) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L523] COND TRUE b != ((void *)0) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) [L525] return 0; VAL [\old(newsize)=0, \old(num)=0, \result={0:0}, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L537] RET expandArray(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, expandArray(a)={0:0}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 63 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 468 SDtfs, 411 SDslu, 944 SDs, 0 SdLazy, 608 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=9, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 496 ConstructedInterpolants, 21 QuantifiedInterpolants, 1569 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1321 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 28 InterpolantComputations, 26 PerfectInterpolantSequences, 40/44 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! [2021-11-09 09:39:34,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_578d9233-4ac2-4719-9557-56cd3796da00/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)