./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b099a717aded091d5866869f3c84b7af6ed3ff48 .............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b099a717aded091d5866869f3c84b7af6ed3ff48 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:35,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:35,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:35,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:35,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:35,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:35,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:35,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:35,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:35,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:35,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:35,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:35,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:35,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:35,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:35,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:35,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:35,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:35,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:35,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:35,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:35,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:35,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:35,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:35,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:35,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:35,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:35,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:35,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:35,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:35,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:35,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:35,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:35,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:35,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:35,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:35,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:35,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:35,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:35,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:35,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:35,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 12:56:35,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:35,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:35,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:35,276 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:35,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:35,277 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:35,277 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:35,277 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:35,278 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:35,278 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:35,278 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:35,278 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:35,279 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:35,279 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:35,279 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:35,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 12:56:35,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 12:56:35,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:35,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:35,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:56:35,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:35,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:35,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:35,282 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 12:56:35,282 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 12:56:35,282 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 12:56:35,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:35,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:35,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:35,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:35,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:35,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:35,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:35,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:35,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:35,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:35,285 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:35,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:35,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:35,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:35,286 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b099a717aded091d5866869f3c84b7af6ed3ff48 [2020-11-22 12:56:35,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:35,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:35,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:35,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:35,596 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:35,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i [2020-11-22 12:56:35,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data/6f2af3506/a06223710885469aa1f28a875783cc62/FLAG28a3f7964 [2020-11-22 12:56:36,186 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:36,186 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i [2020-11-22 12:56:36,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data/6f2af3506/a06223710885469aa1f28a875783cc62/FLAG28a3f7964 [2020-11-22 12:56:36,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data/6f2af3506/a06223710885469aa1f28a875783cc62 [2020-11-22 12:56:36,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:36,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:36,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:36,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:36,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:36,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:36" (1/1) ... [2020-11-22 12:56:36,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327e0812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:36, skipping insertion in model container [2020-11-22 12:56:36,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:36" (1/1) ... [2020-11-22 12:56:36,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:36,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:36,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:36,960 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) [2020-11-22 12:56:36,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6372eacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:36, skipping insertion in model container [2020-11-22 12:56:36,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:36,962 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 12:56:36,964 INFO L168 Benchmark]: Toolchain (without parser) took 460.93 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 41.1 MB in the beginning and 63.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:36,965 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 55.3 MB in the beginning and 55.3 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:36,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.74 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.9 MB in the beginning and 63.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:36,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 55.3 MB in the beginning and 55.3 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 457.74 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.9 MB in the beginning and 63.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:39,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:39,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:39,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:39,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:39,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:39,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:39,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:39,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:39,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:39,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:39,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:39,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:39,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:39,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:39,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:39,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:39,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:39,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:39,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:39,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:39,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:39,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:39,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:39,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:39,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:39,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:39,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:39,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:39,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:39,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:39,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:39,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:39,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:39,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:39,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:39,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:39,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:39,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:39,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:39,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:39,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 12:56:39,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:39,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:39,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:39,378 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:39,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:39,378 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:39,378 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:39,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:39,379 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:39,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 12:56:39,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 12:56:39,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:39,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:39,382 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:56:39,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:39,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:39,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:39,383 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 12:56:39,384 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 12:56:39,384 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 12:56:39,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:39,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:39,385 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:56:39,385 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:56:39,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:39,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:39,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:39,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:56:39,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:39,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:39,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:39,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:39,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:39,388 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:56:39,388 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:56:39,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:39,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:39,389 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-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b099a717aded091d5866869f3c84b7af6ed3ff48 [2020-11-22 12:56:39,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:39,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:39,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:39,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:39,829 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:39,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i [2020-11-22 12:56:39,889 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data/6fcfd9fb6/8455cdebd07e4cef9350934c27ee8ca5/FLAG76ebdcd18 [2020-11-22 12:56:40,515 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:40,516 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i [2020-11-22 12:56:40,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data/6fcfd9fb6/8455cdebd07e4cef9350934c27ee8ca5/FLAG76ebdcd18 [2020-11-22 12:56:40,770 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/data/6fcfd9fb6/8455cdebd07e4cef9350934c27ee8ca5 [2020-11-22 12:56:40,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:40,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:40,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:40,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:40,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:40,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:40" (1/1) ... [2020-11-22 12:56:40,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e02e630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:40, skipping insertion in model container [2020-11-22 12:56:40,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:40" (1/1) ... [2020-11-22 12:56:40,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:40,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:41,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:41,310 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 12:56:41,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:41,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:41,436 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:41,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:41,671 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:41,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41 WrapperNode [2020-11-22 12:56:41,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:41,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:41,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:41,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:41,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:41,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:41,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:41,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:41,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... [2020-11-22 12:56:41,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:41,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:41,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:41,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:41,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 12:56:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 12:56:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:56:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-22 12:56:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:41,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:42,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:42,193 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 12:56:42,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:42 BoogieIcfgContainer [2020-11-22 12:56:42,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:42,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:42,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:42,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:42,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:40" (1/3) ... [2020-11-22 12:56:42,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3397dad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:42, skipping insertion in model container [2020-11-22 12:56:42,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:41" (2/3) ... [2020-11-22 12:56:42,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3397dad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:42, skipping insertion in model container [2020-11-22 12:56:42,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:42" (3/3) ... [2020-11-22 12:56:42,202 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test7-1.i [2020-11-22 12:56:42,222 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:42,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-22 12:56:42,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 12:56:42,267 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:42,268 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 12:56:42,268 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:42,268 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:42,268 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:42,268 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:42,268 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:42,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:42,282 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-22 12:56:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:56:42,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:42,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:42,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2020-11-22 12:56:42,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:42,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666129635] [2020-11-22 12:56:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:42,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:56:42,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:42,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:42,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666129635] [2020-11-22 12:56:42,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:42,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:56:42,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438440525] [2020-11-22 12:56:42,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:42,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:42,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:42,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:42,589 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-11-22 12:56:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:42,659 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-11-22 12:56:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:42,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 12:56:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:42,670 INFO L225 Difference]: With dead ends: 25 [2020-11-22 12:56:42,670 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 12:56:42,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:42,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 12:56:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 12:56:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 12:56:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-22 12:56:42,703 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2020-11-22 12:56:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:42,704 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-22 12:56:42,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-22 12:56:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:56:42,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:42,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:42,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:56:42,926 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:42,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:42,928 INFO L82 PathProgramCache]: Analyzing trace with hash -593299125, now seen corresponding path program 1 times [2020-11-22 12:56:42,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:42,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342002251] [2020-11-22 12:56:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:43,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:56:43,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:43,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:43,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342002251] [2020-11-22 12:56:43,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:43,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 12:56:43,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519666816] [2020-11-22 12:56:43,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:43,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:43,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:43,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:43,068 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-11-22 12:56:43,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:43,145 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-11-22 12:56:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:56:43,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 12:56:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:43,148 INFO L225 Difference]: With dead ends: 43 [2020-11-22 12:56:43,148 INFO L226 Difference]: Without dead ends: 43 [2020-11-22 12:56:43,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-22 12:56:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 25. [2020-11-22 12:56:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 12:56:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-11-22 12:56:43,160 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 9 [2020-11-22 12:56:43,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:43,160 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-11-22 12:56:43,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:43,161 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-11-22 12:56:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:56:43,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:43,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:43,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:56:43,378 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:43,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:43,378 INFO L82 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2020-11-22 12:56:43,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:43,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985144639] [2020-11-22 12:56:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:43,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:56:43,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:43,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:43,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985144639] [2020-11-22 12:56:43,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:43,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2020-11-22 12:56:43,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574021326] [2020-11-22 12:56:43,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:56:43,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:56:43,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:56:43,570 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2020-11-22 12:56:43,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:43,767 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2020-11-22 12:56:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:56:43,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-22 12:56:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:43,772 INFO L225 Difference]: With dead ends: 41 [2020-11-22 12:56:43,772 INFO L226 Difference]: Without dead ends: 41 [2020-11-22 12:56:43,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:56:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-22 12:56:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2020-11-22 12:56:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-22 12:56:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-22 12:56:43,784 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2020-11-22 12:56:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:43,785 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-22 12:56:43,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:56:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-22 12:56:43,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:56:43,785 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:43,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:43,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:56:43,997 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:43,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:43,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1181708237, now seen corresponding path program 1 times [2020-11-22 12:56:43,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:43,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108882148] [2020-11-22 12:56:43,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:44,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:56:44,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:44,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:44,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108882148] [2020-11-22 12:56:44,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:44,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-22 12:56:44,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853952463] [2020-11-22 12:56:44,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:56:44,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:44,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:56:44,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:56:44,167 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-11-22 12:56:44,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:44,290 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-22 12:56:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:56:44,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-11-22 12:56:44,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:44,292 INFO L225 Difference]: With dead ends: 37 [2020-11-22 12:56:44,292 INFO L226 Difference]: Without dead ends: 37 [2020-11-22 12:56:44,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:56:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-22 12:56:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2020-11-22 12:56:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-22 12:56:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-22 12:56:44,299 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 9 [2020-11-22 12:56:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:44,300 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-22 12:56:44,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:56:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-22 12:56:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:56:44,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:44,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:44,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:56:44,502 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:44,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1181711120, now seen corresponding path program 1 times [2020-11-22 12:56:44,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:44,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503833566] [2020-11-22 12:56:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:44,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:56:44,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:44,610 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:44,610 INFO L384 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 25 [2020-11-22 12:56:44,611 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:44,642 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-11-22 12:56:44,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:44,647 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 12:56:44,647 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-11-22 12:56:44,648 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:44,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:44,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:44,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503833566] [2020-11-22 12:56:44,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:44,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2020-11-22 12:56:44,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663469773] [2020-11-22 12:56:44,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:56:44,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:44,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:56:44,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:56:44,786 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 7 states. [2020-11-22 12:56:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:44,961 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-11-22 12:56:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:56:44,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-22 12:56:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:44,963 INFO L225 Difference]: With dead ends: 47 [2020-11-22 12:56:44,963 INFO L226 Difference]: Without dead ends: 40 [2020-11-22 12:56:44,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:56:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-22 12:56:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2020-11-22 12:56:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-22 12:56:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-11-22 12:56:44,968 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 9 [2020-11-22 12:56:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:44,968 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-11-22 12:56:44,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:56:44,968 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-11-22 12:56:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:56:44,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:44,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:45,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:56:45,175 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:45,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2020-11-22 12:56:45,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:45,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515112729] [2020-11-22 12:56:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:45,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:56:45,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:45,255 INFO L384 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 [2020-11-22 12:56:45,256 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:45,259 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:45,259 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 12:56:45,259 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 12:56:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:45,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:45,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515112729] [2020-11-22 12:56:45,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:45,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:56:45,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606265977] [2020-11-22 12:56:45,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:45,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:45,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:45,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:45,301 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 4 states. [2020-11-22 12:56:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:45,359 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-11-22 12:56:45,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:45,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 12:56:45,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:45,360 INFO L225 Difference]: With dead ends: 37 [2020-11-22 12:56:45,360 INFO L226 Difference]: Without dead ends: 37 [2020-11-22 12:56:45,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-22 12:56:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-11-22 12:56:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-22 12:56:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-11-22 12:56:45,365 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 10 [2020-11-22 12:56:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:45,365 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-11-22 12:56:45,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-11-22 12:56:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:56:45,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:45,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:45,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 12:56:45,577 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:45,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2020-11-22 12:56:45,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:45,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114406833] [2020-11-22 12:56:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:45,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:56:45,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:45,647 INFO L384 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 [2020-11-22 12:56:45,648 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:45,650 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:45,650 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 12:56:45,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 12:56:45,688 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:45,689 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-11-22 12:56:45,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 12:56:45,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:45,697 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:45,727 INFO L625 ElimStorePlain]: treesize reduction 16, result has 51.5 percent of original size [2020-11-22 12:56:45,728 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 12:56:45,729 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2020-11-22 12:56:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:45,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:47,786 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ldv_malloc_#t~malloc12.base_9| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#t~malloc12.base_9|))) (= (bvadd (select (store |c_#valid| |v_ULTIMATE.start_ldv_malloc_#t~malloc12.base_9| (_ bv1 1)) c_ULTIMATE.start_probe1_6_~a.base) (_ bv1 1)) (_ bv0 1)))) is different from false [2020-11-22 12:56:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:47,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114406833] [2020-11-22 12:56:47,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:47,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:56:47,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991116223] [2020-11-22 12:56:47,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:47,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:47,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:47,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2020-11-22 12:56:47,821 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 5 states. [2020-11-22 12:56:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:48,020 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-11-22 12:56:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:48,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-22 12:56:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:48,021 INFO L225 Difference]: With dead ends: 35 [2020-11-22 12:56:48,021 INFO L226 Difference]: Without dead ends: 35 [2020-11-22 12:56:48,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2020-11-22 12:56:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-22 12:56:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-11-22 12:56:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 12:56:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-11-22 12:56:48,026 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 10 [2020-11-22 12:56:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:48,026 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-11-22 12:56:48,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-11-22 12:56:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:56:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:48,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:48,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 12:56:48,239 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:48,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:48,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2020-11-22 12:56:48,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:48,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203947175] [2020-11-22 12:56:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:48,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:56:48,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:48,329 INFO L384 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 [2020-11-22 12:56:48,330 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:48,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:48,345 INFO L384 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 [2020-11-22 12:56:48,346 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:48,358 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:48,358 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 12:56:48,358 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-11-22 12:56:48,405 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:48,406 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-11-22 12:56:48,407 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:48,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:48,428 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-11-22 12:56:48,429 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:48,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:48,451 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 12:56:48,452 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:9 [2020-11-22 12:56:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:48,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:48,550 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:53,246 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-22 12:56:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:53,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203947175] [2020-11-22 12:56:53,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:53,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 12:56:53,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240182900] [2020-11-22 12:56:53,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:56:53,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:53,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:56:53,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2020-11-22 12:56:53,257 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 6 states. [2020-11-22 12:56:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:53,296 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-11-22 12:56:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:53,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-22 12:56:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:53,297 INFO L225 Difference]: With dead ends: 33 [2020-11-22 12:56:53,297 INFO L226 Difference]: Without dead ends: 32 [2020-11-22 12:56:53,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2020-11-22 12:56:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-22 12:56:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-22 12:56:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-22 12:56:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-11-22 12:56:53,302 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 10 [2020-11-22 12:56:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:53,303 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-11-22 12:56:53,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:56:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-11-22 12:56:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:56:53,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:53,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:53,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 12:56:53,509 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:53,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:53,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1988338696, now seen corresponding path program 1 times [2020-11-22 12:56:53,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:53,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298965652] [2020-11-22 12:56:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:53,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:56:53,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:53,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:53,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298965652] [2020-11-22 12:56:53,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:53,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 12:56:53,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267083524] [2020-11-22 12:56:53,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:53,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:53,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:53,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:53,607 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-11-22 12:56:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:53,638 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-11-22 12:56:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:53,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 12:56:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:53,640 INFO L225 Difference]: With dead ends: 23 [2020-11-22 12:56:53,640 INFO L226 Difference]: Without dead ends: 21 [2020-11-22 12:56:53,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-22 12:56:53,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-22 12:56:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-22 12:56:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-22 12:56:53,642 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2020-11-22 12:56:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:53,643 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-22 12:56:53,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-22 12:56:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:56:53,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:53,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:53,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-22 12:56:53,844 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:56:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:53,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1815856772, now seen corresponding path program 1 times [2020-11-22 12:56:53,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:53,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968675816] [2020-11-22 12:56:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:53,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 12:56:53,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:53,934 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:56:53,934 INFO L384 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 25 [2020-11-22 12:56:53,935 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:56:53,964 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-11-22 12:56:53,964 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:53,965 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 12:56:53,966 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-11-22 12:56:53,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:53,977 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:56,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:00,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968675816] [2020-11-22 12:57:00,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:00,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2020-11-22 12:57:00,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938872178] [2020-11-22 12:57:00,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 12:57:00,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:00,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 12:57:00,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=116, Unknown=3, NotChecked=0, Total=156 [2020-11-22 12:57:00,551 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 13 states. [2020-11-22 12:57:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:02,955 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-11-22 12:57:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:57:02,956 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-11-22 12:57:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:02,956 INFO L225 Difference]: With dead ends: 23 [2020-11-22 12:57:02,956 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 12:57:02,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=53, Invalid=154, Unknown=3, NotChecked=0, Total=210 [2020-11-22 12:57:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 12:57:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 12:57:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 12:57:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-22 12:57:02,958 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-11-22 12:57:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:02,958 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-22 12:57:02,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 12:57:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-22 12:57:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:57:02,959 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:02,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:03,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-22 12:57:03,160 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:57:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:03,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2005770586, now seen corresponding path program 1 times [2020-11-22 12:57:03,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:03,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443883095] [2020-11-22 12:57:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ef65955-1c7b-4265-a8bb-30618aef01e1/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:03,220 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:03,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:03,281 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:57:03,282 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:57:03,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-22 12:57:03,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:03 BoogieIcfgContainer [2020-11-22 12:57:03,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:03,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:03,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:03,523 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:03,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:42" (3/4) ... [2020-11-22 12:57:03,526 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:57:03,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:03,529 INFO L168 Benchmark]: Toolchain (without parser) took 22750.81 ms. Allocated memory was 52.4 MB in the beginning and 100.7 MB in the end (delta: 48.2 MB). Free memory was 28.4 MB in the beginning and 39.5 MB in the end (delta: -11.1 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,530 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:03,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 892.53 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.3 MB in the beginning and 34.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.94 ms. Allocated memory is still 69.2 MB. Free memory was 34.1 MB in the beginning and 31.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,536 INFO L168 Benchmark]: Boogie Preprocessor took 33.94 ms. Allocated memory is still 69.2 MB. Free memory was 31.8 MB in the beginning and 50.4 MB in the end (delta: -18.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,537 INFO L168 Benchmark]: RCFGBuilder took 405.29 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 32.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,539 INFO L168 Benchmark]: TraceAbstraction took 21326.22 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 32.4 MB in the beginning and 39.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,540 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 100.7 MB. Free memory is still 39.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:03,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 892.53 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.3 MB in the beginning and 34.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.94 ms. Allocated memory is still 69.2 MB. Free memory was 34.1 MB in the beginning and 31.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.94 ms. Allocated memory is still 69.2 MB. Free memory was 31.8 MB in the beginning and 50.4 MB in the end (delta: -18.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 405.29 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 32.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21326.22 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 32.4 MB in the beginning and 39.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.53 ms. Allocated memory is still 100.7 MB. Free memory is still 39.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 789]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 789. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={3:0}] [L783] struct A a7; [L764] int ret = - -3; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [ldv_global_msg_list={3:0}] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L758] return __VERIFIER_nondet_int(); [L768] ret = f6() [L769] COND FALSE !(ret<0) [L761] return __VERIFIER_nondet_int(); [L771] ret = g6() [L772] COND FALSE !(ret<0) VAL [ldv_global_msg_list={3:0}] [L774] a->p = p VAL [ldv_global_msg_list={3:0}] [L775] return 0; VAL [ldv_global_msg_list={3:0}] [L784] int ret = probe1_6(&a7); [L785] COND TRUE ret==0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 397 SDslu, 374 SDs, 0 SdLazy, 282 SolverSat, 23 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 61 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 176 ConstructedInterpolants, 31 QuantifiedInterpolants, 13647 SizeOfPredicates, 34 NumberOfNonLiveVariables, 468 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...