./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i -s /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 fa0c2a1ec4e9d87c009cc3e8aa4349638d4af33a ............................................................................................................................................ 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_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i -s /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 fa0c2a1ec4e9d87c009cc3e8aa4349638d4af33a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:10:12,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:10:12,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:10:12,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:10:12,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:10:12,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:10:12,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:10:12,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:10:12,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:10:12,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:10:12,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:10:12,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:10:12,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:10:12,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:10:12,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:10:12,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:10:12,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:10:12,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:10:12,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:10:12,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:10:12,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:10:12,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:10:12,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:10:12,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:10:12,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:10:12,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:10:12,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:10:12,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:10:12,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:10:12,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:10:12,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:10:12,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:10:12,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:10:12,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:10:12,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:10:12,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:10:12,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:10:12,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:10:12,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:10:12,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:10:12,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:10:12,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 14:10:12,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:10:12,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:10:12,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:10:12,237 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:10:12,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:10:12,237 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:10:12,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:10:12,238 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:10:12,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:10:12,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:10:12,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:10:12,238 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:10:12,239 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:10:12,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:10:12,239 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:10:12,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 14:10:12,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 14:10:12,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:10:12,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:10:12,240 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:10:12,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:10:12,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:10:12,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:10:12,241 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 14:10:12,241 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 14:10:12,241 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 14:10:12,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:10:12,242 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:10:12,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:10:12,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:10:12,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:10:12,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:10:12,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:10:12,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:10:12,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:10:12,243 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:10:12,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:10:12,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:10:12,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:10:12,244 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_64bda422-dc8f-405c-8409-704a8889eddb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa0c2a1ec4e9d87c009cc3e8aa4349638d4af33a [2020-12-09 14:10:12,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:10:12,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:10:12,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:10:12,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:10:12,450 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:10:12,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2020-12-09 14:10:12,490 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data/abedd6ae7/611d97ebfa3344ef81cab85213754e24/FLAGda34c3f6b [2020-12-09 14:10:12,960 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:10:12,960 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2020-12-09 14:10:12,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data/abedd6ae7/611d97ebfa3344ef81cab85213754e24/FLAGda34c3f6b [2020-12-09 14:10:13,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data/abedd6ae7/611d97ebfa3344ef81cab85213754e24 [2020-12-09 14:10:13,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:10:13,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:10:13,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:10:13,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:10:13,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:10:13,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:10:13" (1/1) ... [2020-12-09 14:10:13,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebe0e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:13, skipping insertion in model container [2020-12-09 14:10:13,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:10:13" (1/1) ... [2020-12-09 14:10:13,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:10:13,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:10:13,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:10:13,755 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) [2020-12-09 14:10:13,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a08e954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:13, skipping insertion in model container [2020-12-09 14:10:13,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:10:13,756 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 14:10:13,757 INFO L168 Benchmark]: Toolchain (without parser) took 277.40 ms. Allocated memory is still 111.1 MB. Free memory was 70.2 MB in the beginning and 83.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:13,758 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 111.1 MB. Free memory was 88.1 MB in the beginning and 88.0 MB in the end (delta: 77.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:10:13,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.62 ms. Allocated memory is still 111.1 MB. Free memory was 70.0 MB in the beginning and 83.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:13,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 111.1 MB. Free memory was 88.1 MB in the beginning and 88.0 MB in the end (delta: 77.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.62 ms. Allocated memory is still 111.1 MB. Free memory was 70.0 MB in the beginning and 83.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.7 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 0.2.0-7b2dab5 [2020-12-09 14:10:15,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:10:15,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:10:15,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:10:15,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:10:15,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:10:15,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:10:15,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:10:15,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:10:15,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:10:15,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:10:15,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:10:15,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:10:15,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:10:15,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:10:15,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:10:15,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:10:15,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:10:15,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:10:15,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:10:15,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:10:15,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:10:15,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:10:15,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:10:15,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:10:15,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:10:15,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:10:15,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:10:15,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:10:15,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:10:15,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:10:15,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:10:15,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:10:15,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:10:15,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:10:15,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:10:15,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:10:15,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:10:15,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:10:15,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:10:15,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:10:15,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 14:10:15,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:10:15,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:10:15,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:10:15,162 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:10:15,163 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:10:15,163 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:10:15,163 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:10:15,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:10:15,163 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:10:15,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 14:10:15,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 14:10:15,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:10:15,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:10:15,164 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:10:15,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:10:15,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:10:15,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:10:15,165 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 14:10:15,165 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 14:10:15,165 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 14:10:15,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:10:15,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:10:15,165 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 14:10:15,165 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 14:10:15,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:10:15,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:10:15,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:10:15,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 14:10:15,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:10:15,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:10:15,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:10:15,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:10:15,167 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 14:10:15,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 14:10:15,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:10:15,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:10:15,167 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_64bda422-dc8f-405c-8409-704a8889eddb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa0c2a1ec4e9d87c009cc3e8aa4349638d4af33a [2020-12-09 14:10:15,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:10:15,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:10:15,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:10:15,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:10:15,416 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:10:15,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2020-12-09 14:10:15,458 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data/6d6cc16cb/76ad7df967d744d7992db92b86aed355/FLAGf3dae6308 [2020-12-09 14:10:15,967 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:10:15,968 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2020-12-09 14:10:15,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data/6d6cc16cb/76ad7df967d744d7992db92b86aed355/FLAGf3dae6308 [2020-12-09 14:10:16,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/data/6d6cc16cb/76ad7df967d744d7992db92b86aed355 [2020-12-09 14:10:16,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:10:16,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:10:16,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:10:16,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:10:16,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:10:16,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:16,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4c1f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16, skipping insertion in model container [2020-12-09 14:10:16,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:16,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:10:16,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:10:16,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:10:16,807 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 14:10:16,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:10:16,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:10:16,854 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:10:16,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:10:16,953 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:10:16,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16 WrapperNode [2020-12-09 14:10:16,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:10:16,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:10:16,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:10:16,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:10:16,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:16,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:16,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:10:16,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:10:16,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:10:16,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:10:17,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:17,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:17,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:17,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:17,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:17,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:17,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... [2020-12-09 14:10:17,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:10:17,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:10:17,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:10:17,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:10:17,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 14:10:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:10:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 14:10:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 14:10:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:10:17,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:10:17,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:10:17,232 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 14:10:17,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:10:17 BoogieIcfgContainer [2020-12-09 14:10:17,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:10:17,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:10:17,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:10:17,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:10:17,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:10:16" (1/3) ... [2020-12-09 14:10:17,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f11f565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:10:17, skipping insertion in model container [2020-12-09 14:10:17,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:10:16" (2/3) ... [2020-12-09 14:10:17,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f11f565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:10:17, skipping insertion in model container [2020-12-09 14:10:17,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:10:17" (3/3) ... [2020-12-09 14:10:17,238 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test16.i [2020-12-09 14:10:17,248 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:10:17,250 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 14:10:17,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 14:10:17,271 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:10:17,271 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 14:10:17,271 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:10:17,271 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:10:17,272 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:10:17,272 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:10:17,272 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:10:17,272 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:10:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-09 14:10:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 14:10:17,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:17,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 14:10:17,284 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash 889783782, now seen corresponding path program 1 times [2020-12-09 14:10:17,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:17,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932558506] [2020-12-09 14:10:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:17,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:10:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:17,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:17,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932558506] [2020-12-09 14:10:17,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:17,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:10:17,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901275262] [2020-12-09 14:10:17,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:10:17,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:17,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:10:17,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:10:17,440 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-12-09 14:10:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:17,495 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-12-09 14:10:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:10:17,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 14:10:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:17,501 INFO L225 Difference]: With dead ends: 27 [2020-12-09 14:10:17,501 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 14:10:17,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:10:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 14:10:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2020-12-09 14:10:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 14:10:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-09 14:10:17,524 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2020-12-09 14:10:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:17,524 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-09 14:10:17,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:10:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-09 14:10:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 14:10:17,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:17,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 14:10:17,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 14:10:17,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:17,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:17,727 INFO L82 PathProgramCache]: Analyzing trace with hash 889784041, now seen corresponding path program 1 times [2020-12-09 14:10:17,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:17,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509432007] [2020-12-09 14:10:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:17,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:10:17,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:17,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:17,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509432007] [2020-12-09 14:10:17,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:17,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:10:17,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412670446] [2020-12-09 14:10:17,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:10:17,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:17,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:10:17,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:10:17,802 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-12-09 14:10:17,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:17,828 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-12-09 14:10:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:10:17,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 14:10:17,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:17,830 INFO L225 Difference]: With dead ends: 27 [2020-12-09 14:10:17,830 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 14:10:17,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:10:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 14:10:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-12-09 14:10:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 14:10:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-09 14:10:17,835 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2020-12-09 14:10:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:17,836 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-09 14:10:17,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:10:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-09 14:10:17,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:10:17,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:17,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:10:18,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 14:10:18,037 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash 118460299, now seen corresponding path program 1 times [2020-12-09 14:10:18,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:18,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85884696] [2020-12-09 14:10:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:18,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 14:10:18,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:18,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:18,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85884696] [2020-12-09 14:10:18,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:18,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:10:18,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864227331] [2020-12-09 14:10:18,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:10:18,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:18,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:10:18,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:10:18,099 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-12-09 14:10:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:18,122 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-09 14:10:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:10:18,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 14:10:18,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:18,123 INFO L225 Difference]: With dead ends: 17 [2020-12-09 14:10:18,123 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 14:10:18,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:10:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 14:10:18,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 14:10:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 14:10:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-09 14:10:18,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2020-12-09 14:10:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:18,125 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-09 14:10:18,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:10:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-09 14:10:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:10:18,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:18,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:10:18,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 14:10:18,328 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash 118460558, now seen corresponding path program 1 times [2020-12-09 14:10:18,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:18,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747706863] [2020-12-09 14:10:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:18,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:10:18,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:18,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:18,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747706863] [2020-12-09 14:10:18,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:18,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:10:18,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34939171] [2020-12-09 14:10:18,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:10:18,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:18,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:10:18,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:10:18,428 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-12-09 14:10:18,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:18,445 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-12-09 14:10:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:10:18,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 14:10:18,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:18,446 INFO L225 Difference]: With dead ends: 17 [2020-12-09 14:10:18,446 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 14:10:18,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:10:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 14:10:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2020-12-09 14:10:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 14:10:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-12-09 14:10:18,448 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2020-12-09 14:10:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:18,448 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-12-09 14:10:18,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:10:18,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-12-09 14:10:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 14:10:18,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:18,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:10:18,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 14:10:18,651 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:18,652 INFO L82 PathProgramCache]: Analyzing trace with hash -622697974, now seen corresponding path program 1 times [2020-12-09 14:10:18,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:18,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876725821] [2020-12-09 14:10:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:18,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 14:10:18,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:18,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:18,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876725821] [2020-12-09 14:10:18,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:18,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:10:18,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061314141] [2020-12-09 14:10:18,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:10:18,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:18,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:10:18,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:10:18,755 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2020-12-09 14:10:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:18,835 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-09 14:10:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:10:18,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-09 14:10:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:18,836 INFO L225 Difference]: With dead ends: 23 [2020-12-09 14:10:18,836 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 14:10:18,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:10:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 14:10:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-12-09 14:10:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 14:10:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-09 14:10:18,839 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2020-12-09 14:10:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:18,839 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-09 14:10:18,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:10:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-09 14:10:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 14:10:18,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:18,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:10:19,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 14:10:19,041 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash -565439672, now seen corresponding path program 1 times [2020-12-09 14:10:19,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:19,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090582705] [2020-12-09 14:10:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:19,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 14:10:19,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:19,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:19,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090582705] [2020-12-09 14:10:19,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:19,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:10:19,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828191385] [2020-12-09 14:10:19,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:10:19,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:19,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:10:19,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:10:19,166 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-12-09 14:10:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:19,211 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-09 14:10:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:10:19,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-09 14:10:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:19,212 INFO L225 Difference]: With dead ends: 21 [2020-12-09 14:10:19,212 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 14:10:19,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:10:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 14:10:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-12-09 14:10:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 14:10:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-09 14:10:19,215 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2020-12-09 14:10:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:19,215 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-09 14:10:19,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:10:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-09 14:10:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 14:10:19,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:19,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:10:19,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 14:10:19,418 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:19,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2123767955, now seen corresponding path program 1 times [2020-12-09 14:10:19,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:19,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841031815] [2020-12-09 14:10:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:19,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 14:10:19,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:19,533 INFO L382 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 [2020-12-09 14:10:19,534 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:10:19,535 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:10:19,536 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:10:19,536 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 14:10:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:19,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:19,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841031815] [2020-12-09 14:10:19,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:19,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:10:19,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166887148] [2020-12-09 14:10:19,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:10:19,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:19,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:10:19,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:10:19,556 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-12-09 14:10:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:19,606 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-09 14:10:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:10:19,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 14:10:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:19,607 INFO L225 Difference]: With dead ends: 18 [2020-12-09 14:10:19,607 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 14:10:19,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:10:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 14:10:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2020-12-09 14:10:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 14:10:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 14:10:19,609 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-12-09 14:10:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:19,610 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 14:10:19,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:10:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 14:10:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 14:10:19,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:19,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:10:19,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 14:10:19,812 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:19,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1412297103, now seen corresponding path program 1 times [2020-12-09 14:10:19,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:19,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985172395] [2020-12-09 14:10:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:19,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 14:10:19,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:19,926 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:10:19,926 INFO L382 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 [2020-12-09 14:10:19,929 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:10:19,941 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 14:10:19,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:10:19,946 INFO L547 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. [2020-12-09 14:10:19,946 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 14:10:19,947 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:10:19,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:10:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:22,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:22,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985172395] [2020-12-09 14:10:22,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:22,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:10:22,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034670276] [2020-12-09 14:10:22,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:10:22,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:22,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:10:22,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2020-12-09 14:10:22,084 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2020-12-09 14:10:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:38,286 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-12-09 14:10:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 14:10:38,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-09 14:10:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:38,287 INFO L225 Difference]: With dead ends: 19 [2020-12-09 14:10:38,287 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 14:10:38,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=31, Invalid=58, Unknown=1, NotChecked=0, Total=90 [2020-12-09 14:10:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 14:10:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 14:10:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 14:10:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-09 14:10:38,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-12-09 14:10:38,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:38,288 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-09 14:10:38,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:10:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-09 14:10:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 14:10:38,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:10:38,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:10:38,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 14:10:38,491 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 14:10:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:10:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2073323567, now seen corresponding path program 1 times [2020-12-09 14:10:38,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:10:38,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030746854] [2020-12-09 14:10:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/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 [2020-12-09 14:10:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:10:38,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 14:10:38,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:10:38,552 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-09 14:10:38,553 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:10:38,565 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2020-12-09 14:10:38,566 INFO L547 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. [2020-12-09 14:10:38,567 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-12-09 14:10:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:10:38,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:10:38,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030746854] [2020-12-09 14:10:38,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:10:38,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:10:38,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714953514] [2020-12-09 14:10:38,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 14:10:38,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:10:38,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 14:10:38,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:10:38,682 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 7 states. [2020-12-09 14:10:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:10:38,741 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-12-09 14:10:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:10:38,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-09 14:10:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:10:38,742 INFO L225 Difference]: With dead ends: 11 [2020-12-09 14:10:38,742 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:10:38,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:10:38,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:10:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:10:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:10:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:10:38,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 14:10:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:10:38,743 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:10:38,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 14:10:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:10:38,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:10:38,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 14:10:38,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:10:38 BoogieIcfgContainer [2020-12-09 14:10:38,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:10:38,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:10:38,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:10:38,957 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:10:38,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:10:17" (3/4) ... [2020-12-09 14:10:38,965 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 14:10:38,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 14:10:38,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 14:10:38,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 14:10:39,016 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_64bda422-dc8f-405c-8409-704a8889eddb/bin/utaipan/witness.graphml [2020-12-09 14:10:39,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:10:39,017 INFO L168 Benchmark]: Toolchain (without parser) took 22526.84 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 28.4 MB in the beginning and 25.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:39,017 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 35.0 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:10:39,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.19 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.2 MB in the beginning and 28.0 MB in the end (delta: 212.6 kB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:39,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 62.9 MB. Free memory was 28.0 MB in the beginning and 43.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:39,019 INFO L168 Benchmark]: Boogie Preprocessor took 17.47 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 41.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:39,019 INFO L168 Benchmark]: RCFGBuilder took 220.04 ms. Allocated memory is still 62.9 MB. Free memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: -421.4 kB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:39,020 INFO L168 Benchmark]: TraceAbstraction took 21721.06 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 41.2 MB in the beginning and 28.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:39,020 INFO L168 Benchmark]: Witness Printer took 59.88 ms. Allocated memory is still 75.5 MB. Free memory was 28.5 MB in the beginning and 25.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:10:39,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 35.0 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.19 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.2 MB in the beginning and 28.0 MB in the end (delta: 212.6 kB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 62.9 MB. Free memory was 28.0 MB in the beginning and 43.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.47 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 41.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 220.04 ms. Allocated memory is still 62.9 MB. Free memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: -421.4 kB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21721.06 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 41.2 MB in the beginning and 28.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * Witness Printer took 59.88 ms. Allocated memory is still 75.5 MB. Free memory was 28.5 MB in the beginning and 25.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 777]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 105 SDtfs, 206 SDslu, 132 SDs, 0 SdLazy, 160 SolverSat, 9 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 16.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=5, 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, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 69 ConstructedInterpolants, 20 QuantifiedInterpolants, 4839 SizeOfPredicates, 46 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...