./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.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_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI --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 b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI --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 b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:33:00,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:33:00,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:33:00,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:33:00,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:33:00,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:33:00,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:33:00,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:33:00,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:33:00,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:33:00,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:33:00,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:33:00,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:33:00,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:33:00,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:33:00,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:33:00,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:33:00,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:33:00,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:33:00,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:33:00,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:33:00,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:33:00,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:33:00,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:33:00,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:33:00,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:33:00,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:33:00,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:33:00,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:33:00,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:33:00,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:33:00,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:33:00,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:33:00,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:33:00,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:33:00,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:33:00,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:33:00,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:33:00,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:33:00,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:33:00,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:33:00,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:33:00,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:33:00,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:33:00,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:33:00,346 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:33:00,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:33:00,347 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:33:00,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:33:00,347 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:33:00,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:33:00,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:33:00,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:33:00,349 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:33:00,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:33:00,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:33:00,350 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:33:00,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:33:00,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:33:00,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:33:00,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:33:00,352 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:33:00,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:33:00,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:33:00,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:33:00,354 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:33:00,354 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:33:00,354 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:33:00,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:33:00,357 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:33:00,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:33:00,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:33:00,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:33:00,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:33:00,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:33:00,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:33:00,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:33:00,359 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:33:00,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:33:00,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:33:00,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:33:00,361 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 [2021-10-11 02:33:00,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:33:00,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:33:00,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:33:00,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:33:00,729 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:33:00,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-11 02:33:00,835 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data/0687db6d1/9ad33956f54e4cb4aaebfa53d1d2f748/FLAGfc5e9e5f0 [2021-10-11 02:33:01,421 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:33:01,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-11 02:33:01,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data/0687db6d1/9ad33956f54e4cb4aaebfa53d1d2f748/FLAGfc5e9e5f0 [2021-10-11 02:33:01,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data/0687db6d1/9ad33956f54e4cb4aaebfa53d1d2f748 [2021-10-11 02:33:01,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:33:01,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:33:01,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:01,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:33:01,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:33:01,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c07a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01, skipping insertion in model container [2021-10-11 02:33:01,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:33:01,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:02,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:02,305 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-11 02:33:02,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51217e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:02, skipping insertion in model container [2021-10-11 02:33:02,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:02,307 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:33:02,309 INFO L168 Benchmark]: Toolchain (without parser) took 596.16 ms. Allocated memory is still 104.9 MB. Free memory was 75.7 MB in the beginning and 76.6 MB in the end (delta: -838.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:02,310 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:02,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.21 ms. Allocated memory is still 104.9 MB. Free memory was 75.7 MB in the beginning and 76.6 MB in the end (delta: -838.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:02,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 589.21 ms. Allocated memory is still 104.9 MB. Free memory was 75.7 MB in the beginning and 76.6 MB in the end (delta: -838.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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 [2021-10-11 02:33:04,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:33:04,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:33:05,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:33:05,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:33:05,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:33:05,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:33:05,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:33:05,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:33:05,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:33:05,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:33:05,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:33:05,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:33:05,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:33:05,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:33:05,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:33:05,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:33:05,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:33:05,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:33:05,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:33:05,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:33:05,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:33:05,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:33:05,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:33:05,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:33:05,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:33:05,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:33:05,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:33:05,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:33:05,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:33:05,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:33:05,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:33:05,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:33:05,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:33:05,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:33:05,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:33:05,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:33:05,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:33:05,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:33:05,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:33:05,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:33:05,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:33:05,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:33:05,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:33:05,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:33:05,150 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:33:05,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:33:05,151 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:33:05,151 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:33:05,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:33:05,152 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:33:05,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:33:05,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:33:05,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:33:05,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:33:05,156 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:33:05,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:33:05,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:33:05,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:33:05,157 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:33:05,157 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:33:05,157 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:33:05,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:33:05,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:33:05,158 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:33:05,158 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:33:05,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:33:05,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:33:05,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:33:05,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:33:05,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:33:05,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:33:05,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:33:05,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:33:05,161 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:33:05,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:33:05,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:33:05,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:33:05,162 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 [2021-10-11 02:33:05,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:33:05,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:33:05,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:33:05,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:33:05,662 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:33:05,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-11 02:33:05,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data/540488cf6/cf5338d659254748aa0b31c904a30610/FLAG0b32e1ae3 [2021-10-11 02:33:06,573 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:33:06,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-11 02:33:06,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data/540488cf6/cf5338d659254748aa0b31c904a30610/FLAG0b32e1ae3 [2021-10-11 02:33:06,607 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/data/540488cf6/cf5338d659254748aa0b31c904a30610 [2021-10-11 02:33:06,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:33:06,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:33:06,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:06,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:33:06,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:33:06,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:06" (1/1) ... [2021-10-11 02:33:06,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c510f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:06, skipping insertion in model container [2021-10-11 02:33:06,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:06" (1/1) ... [2021-10-11 02:33:06,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:33:06,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:07,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:07,306 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:33:07,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:07,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:07,472 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:33:07,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:07,726 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:33:07,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07 WrapperNode [2021-10-11 02:33:07,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:07,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:07,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:33:07,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:33:07,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:07,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:33:07,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:33:07,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:33:07,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... [2021-10-11 02:33:07,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:33:07,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:33:07,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:33:07,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:33:07,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:33:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:33:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:33:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:33:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:33:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:33:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:33:08,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:33:08,791 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:33:08,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:08 BoogieIcfgContainer [2021-10-11 02:33:08,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:33:08,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:33:08,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:33:08,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:33:08,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:06" (1/3) ... [2021-10-11 02:33:08,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae00b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:08, skipping insertion in model container [2021-10-11 02:33:08,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:07" (2/3) ... [2021-10-11 02:33:08,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae00b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:08, skipping insertion in model container [2021-10-11 02:33:08,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:08" (3/3) ... [2021-10-11 02:33:08,806 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_1.i [2021-10-11 02:33:08,823 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:33:08,828 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2021-10-11 02:33:08,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-10-11 02:33:08,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:33:08,896 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:33:08,896 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:33:08,896 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:33:08,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:33:08,896 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:33:08,897 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:33:08,897 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:33:08,916 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-10-11 02:33:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:33:08,924 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:08,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:33:08,926 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:08,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:08,933 INFO L82 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-10-11 02:33:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:08,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999507112] [2021-10-11 02:33:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:09,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:33:09,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:09,302 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:33:09,303 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 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:33:09,322 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:09,356 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2021-10-11 02:33:09,374 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:33:09,379 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. [2021-10-11 02:33:09,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2021-10-11 02:33:09,390 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:33:09,487 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:09,488 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2021-10-11 02:33:09,496 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:09,504 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:09,513 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. [2021-10-11 02:33:09,513 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2021-10-11 02:33:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:09,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:09,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999507112] [2021-10-11 02:33:09,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:09,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:09,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894878440] [2021-10-11 02:33:09,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:33:09,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:09,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:33:09,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:09,655 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2021-10-11 02:33:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:09,967 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-11 02:33:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:09,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-10-11 02:33:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:09,979 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:33:09,980 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:33:09,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:33:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2021-10-11 02:33:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 02:33:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-11 02:33:10,020 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 6 [2021-10-11 02:33:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:10,021 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-11 02:33:10,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:33:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-10-11 02:33:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:33:10,022 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:10,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:33:10,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:33:10,235 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:10,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:10,236 INFO L82 PathProgramCache]: Analyzing trace with hash 889508714, now seen corresponding path program 1 times [2021-10-11 02:33:10,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:10,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401686305] [2021-10-11 02:33:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:10,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:33:10,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:10,404 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-11 02:33:10,405 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-11 02:33:10,410 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:10,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:10,508 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:33:10,509 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 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:33:10,522 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:10,576 INFO L625 ElimStorePlain]: treesize reduction 12, result has 76.0 percent of original size [2021-10-11 02:33:10,585 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:33:10,588 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:33:10,590 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:38 [2021-10-11 02:33:10,597 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:33:10,653 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:33:10,734 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:33:10,757 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-10-11 02:33:10,766 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2021-10-11 02:33:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:33:10,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:33:10,898 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:10,899 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 32 [2021-10-11 02:33:10,905 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:10,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:33:10,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:33:10,950 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:10,951 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 34 [2021-10-11 02:33:10,958 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:10,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:33:10,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:33:11,009 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:11,010 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 34 [2021-10-11 02:33:11,020 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:11,181 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-10-11 02:33:11,182 INFO L625 ElimStorePlain]: treesize reduction 51, result has 61.7 percent of original size [2021-10-11 02:33:11,248 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:11,249 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2021-10-11 02:33:11,256 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:11,337 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:11,337 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 63 [2021-10-11 02:33:11,348 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:11,493 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-10-11 02:33:11,494 INFO L625 ElimStorePlain]: treesize reduction 8, result has 87.7 percent of original size [2021-10-11 02:33:11,502 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-10-11 02:33:11,503 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:132, output treesize:29 [2021-10-11 02:33:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:11,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:11,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401686305] [2021-10-11 02:33:11,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:11,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:11,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629929049] [2021-10-11 02:33:11,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:33:11,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:33:11,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:11,571 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2021-10-11 02:33:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:11,838 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-10-11 02:33:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:11,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-10-11 02:33:11,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:11,841 INFO L225 Difference]: With dead ends: 38 [2021-10-11 02:33:11,841 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 02:33:11,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 02:33:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2021-10-11 02:33:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:33:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-11 02:33:11,847 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 6 [2021-10-11 02:33:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:11,847 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-11 02:33:11,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:33:11,848 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-11 02:33:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:33:11,848 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:11,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:12,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:33:12,064 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:12,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1804987196, now seen corresponding path program 1 times [2021-10-11 02:33:12,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:12,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267674361] [2021-10-11 02:33:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:12,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:33:12,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:12,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:12,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267674361] [2021-10-11 02:33:12,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:12,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:12,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301656418] [2021-10-11 02:33:12,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:12,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:12,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:12,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:12,207 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2021-10-11 02:33:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:12,252 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-10-11 02:33:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:12,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:33:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:12,259 INFO L225 Difference]: With dead ends: 55 [2021-10-11 02:33:12,259 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 02:33:12,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 02:33:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2021-10-11 02:33:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:33:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-11 02:33:12,273 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 7 [2021-10-11 02:33:12,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:12,273 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-11 02:33:12,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-11 02:33:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:33:12,274 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:12,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:12,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:33:12,489 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1806834238, now seen corresponding path program 1 times [2021-10-11 02:33:12,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:12,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460748159] [2021-10-11 02:33:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:12,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:33:12,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:12,643 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:33:12,644 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 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:33:12,648 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:12,690 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2021-10-11 02:33:12,692 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:33:12,696 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. [2021-10-11 02:33:12,697 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2021-10-11 02:33:12,709 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-10-11 02:33:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:12,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:12,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460748159] [2021-10-11 02:33:12,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:12,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:12,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427693207] [2021-10-11 02:33:12,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:12,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:12,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:12,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:12,759 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 4 states. [2021-10-11 02:33:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:12,888 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-11 02:33:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:12,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:33:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:12,894 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:33:12,894 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:33:12,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:33:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:33:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:33:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-11 02:33:12,897 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 7 [2021-10-11 02:33:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:12,898 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-11 02:33:12,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-11 02:33:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:33:12,898 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:12,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:13,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:33:13,099 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:13,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1806834239, now seen corresponding path program 1 times [2021-10-11 02:33:13,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:13,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390905882] [2021-10-11 02:33:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:13,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:33:13,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:13,217 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-11 02:33:13,218 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-11 02:33:13,219 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:13,230 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:13,232 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. [2021-10-11 02:33:13,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2021-10-11 02:33:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:13,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:13,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390905882] [2021-10-11 02:33:13,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:13,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:13,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161217148] [2021-10-11 02:33:13,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:13,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:13,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:13,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:13,285 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2021-10-11 02:33:13,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:13,542 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-11 02:33:13,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:13,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:33:13,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:13,544 INFO L225 Difference]: With dead ends: 49 [2021-10-11 02:33:13,544 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:33:13,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:13,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:33:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2021-10-11 02:33:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:33:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-10-11 02:33:13,550 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 7 [2021-10-11 02:33:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:13,550 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-11 02:33:13,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:13,551 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2021-10-11 02:33:13,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:33:13,551 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:13,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:13,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:33:13,769 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:13,770 INFO L82 PathProgramCache]: Analyzing trace with hash 119380842, now seen corresponding path program 1 times [2021-10-11 02:33:13,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:13,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263606588] [2021-10-11 02:33:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:13,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:33:13,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:13,904 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-11 02:33:13,908 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:13,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:13,917 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:13,917 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2021-10-11 02:33:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:13,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:13,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263606588] [2021-10-11 02:33:13,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:13,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:13,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166477565] [2021-10-11 02:33:13,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:33:13,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:13,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:33:13,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:13,943 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 6 states. [2021-10-11 02:33:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:14,235 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-10-11 02:33:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:33:14,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-10-11 02:33:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:14,242 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:33:14,242 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 02:33:14,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:33:14,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 02:33:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-10-11 02:33:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-10-11 02:33:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-10-11 02:33:14,246 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2021-10-11 02:33:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:14,246 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-10-11 02:33:14,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:33:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-10-11 02:33:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:33:14,247 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:14,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:14,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:33:14,453 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:14,454 INFO L82 PathProgramCache]: Analyzing trace with hash 119380843, now seen corresponding path program 1 times [2021-10-11 02:33:14,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:14,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103377020] [2021-10-11 02:33:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:14,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 02:33:14,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:14,586 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-11 02:33:14,586 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-11 02:33:14,588 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:14,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:14,689 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-10-11 02:33:14,690 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 2 case distinctions, treesize of input 12 treesize of output 33 [2021-10-11 02:33:14,701 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:14,788 INFO L625 ElimStorePlain]: treesize reduction 12, result has 81.3 percent of original size [2021-10-11 02:33:14,792 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:33:14,793 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:33:14,794 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:52 [2021-10-11 02:33:14,796 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:33:14,840 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:33:14,883 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-10-11 02:33:14,886 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-10-11 02:33:14,889 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2021-10-11 02:33:14,989 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:14,989 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-10-11 02:33:14,997 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:15,055 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:15,056 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2021-10-11 02:33:15,060 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:15,148 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:15,148 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 63 [2021-10-11 02:33:15,171 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:15,460 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-10-11 02:33:15,461 INFO L625 ElimStorePlain]: treesize reduction 57, result has 61.5 percent of original size [2021-10-11 02:33:15,503 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:15,504 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 34 [2021-10-11 02:33:15,508 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:15,537 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:15,537 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 32 [2021-10-11 02:33:15,540 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:15,735 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2021-10-11 02:33:15,736 INFO L625 ElimStorePlain]: treesize reduction 12, result has 87.4 percent of original size [2021-10-11 02:33:15,743 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-10-11 02:33:15,743 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:170, output treesize:59 [2021-10-11 02:33:15,853 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-11 02:33:15,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:15,872 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:15,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-11 02:33:15,880 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:15,891 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:15,892 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:15,892 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:9 [2021-10-11 02:33:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:15,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:15,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103377020] [2021-10-11 02:33:15,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:15,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:33:15,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070758270] [2021-10-11 02:33:15,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:33:15,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:15,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:33:15,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:33:15,944 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 7 states. [2021-10-11 02:33:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:16,477 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-10-11 02:33:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:33:16,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2021-10-11 02:33:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:16,478 INFO L225 Difference]: With dead ends: 42 [2021-10-11 02:33:16,478 INFO L226 Difference]: Without dead ends: 42 [2021-10-11 02:33:16,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:33:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-11 02:33:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2021-10-11 02:33:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 02:33:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-10-11 02:33:16,482 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 8 [2021-10-11 02:33:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:16,483 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-10-11 02:33:16,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:33:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-10-11 02:33:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:33:16,484 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:16,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:16,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:33:16,696 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:16,697 INFO L82 PathProgramCache]: Analyzing trace with hash -594161204, now seen corresponding path program 1 times [2021-10-11 02:33:16,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:16,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948605852] [2021-10-11 02:33:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:16,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:33:16,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:16,814 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 [2021-10-11 02:33:16,816 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:16,818 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:16,819 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:16,819 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:33:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:16,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:16,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948605852] [2021-10-11 02:33:16,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:16,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:33:16,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045448433] [2021-10-11 02:33:16,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:33:16,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:16,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:33:16,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:16,873 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 6 states. [2021-10-11 02:33:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:17,126 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2021-10-11 02:33:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:33:17,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 02:33:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:17,127 INFO L225 Difference]: With dead ends: 47 [2021-10-11 02:33:17,127 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:33:17,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:33:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:33:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2021-10-11 02:33:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:33:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-10-11 02:33:17,138 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 9 [2021-10-11 02:33:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:17,139 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-10-11 02:33:17,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:33:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-10-11 02:33:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:33:17,140 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:17,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:17,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:33:17,346 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:17,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:17,347 INFO L82 PathProgramCache]: Analyzing trace with hash -594161203, now seen corresponding path program 1 times [2021-10-11 02:33:17,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:17,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469988531] [2021-10-11 02:33:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:17,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:33:17,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:17,451 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 [2021-10-11 02:33:17,451 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:17,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:17,459 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:17,459 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-10-11 02:33:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:17,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:17,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469988531] [2021-10-11 02:33:17,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:17,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:33:17,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428292376] [2021-10-11 02:33:17,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:33:17,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:17,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:33:17,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:33:17,526 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2021-10-11 02:33:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:17,839 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-11 02:33:17,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:33:17,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2021-10-11 02:33:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:17,842 INFO L225 Difference]: With dead ends: 40 [2021-10-11 02:33:17,842 INFO L226 Difference]: Without dead ends: 40 [2021-10-11 02:33:17,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:33:17,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-11 02:33:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2021-10-11 02:33:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:33:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-10-11 02:33:17,846 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2021-10-11 02:33:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:17,847 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-10-11 02:33:17,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:33:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-10-11 02:33:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:33:17,848 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:17,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:18,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:33:18,056 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:18,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1200915427, now seen corresponding path program 1 times [2021-10-11 02:33:18,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:18,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902678858] [2021-10-11 02:33:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:33:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:18,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:33:18,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:18,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:18,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902678858] [2021-10-11 02:33:18,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:18,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:18,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673427119] [2021-10-11 02:33:18,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:18,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:18,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:18,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:18,139 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 3 states. [2021-10-11 02:33:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:18,224 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-10-11 02:33:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:18,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:33:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:18,225 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:33:18,225 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:33:18,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:33:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-10-11 02:33:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 02:33:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-10-11 02:33:18,228 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 9 [2021-10-11 02:33:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:18,228 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-10-11 02:33:18,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-10-11 02:33:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:33:18,229 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:18,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:18,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:33:18,441 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1180846158, now seen corresponding path program 1 times [2021-10-11 02:33:18,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:18,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011230055] [2021-10-11 02:33:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 02:33:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:18,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:33:18,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:18,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:18,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011230055] [2021-10-11 02:33:18,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:18,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:18,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693954673] [2021-10-11 02:33:18,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:18,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:18,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:18,535 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 4 states. [2021-10-11 02:33:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:18,577 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-11 02:33:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:18,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:33:18,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:18,578 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:33:18,578 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:33:18,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:33:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:33:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:33:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-10-11 02:33:18,581 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2021-10-11 02:33:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:18,581 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-10-11 02:33:18,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-10-11 02:33:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:33:18,582 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:18,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:18,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:33:18,794 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:18,794 INFO L82 PathProgramCache]: Analyzing trace with hash 241733103, now seen corresponding path program 1 times [2021-10-11 02:33:18,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:18,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054468682] [2021-10-11 02:33:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:33:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:18,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:33:18,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:18,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:18,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054468682] [2021-10-11 02:33:18,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:18,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:18,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527801752] [2021-10-11 02:33:18,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:18,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:18,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:18,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:18,910 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 4 states. [2021-10-11 02:33:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:18,980 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-11 02:33:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:18,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:33:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:18,981 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:33:18,981 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:33:18,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:18,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:33:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-11 02:33:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:33:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-11 02:33:18,984 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 11 [2021-10-11 02:33:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:18,984 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-11 02:33:18,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-11 02:33:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:33:18,985 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:18,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:19,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:33:19,197 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:19,198 INFO L82 PathProgramCache]: Analyzing trace with hash 241733104, now seen corresponding path program 1 times [2021-10-11 02:33:19,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:19,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590432619] [2021-10-11 02:33:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:33:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:19,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:33:19,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:19,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:19,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590432619] [2021-10-11 02:33:19,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:19,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:19,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452627255] [2021-10-11 02:33:19,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:33:19,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:19,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:33:19,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:19,357 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 6 states. [2021-10-11 02:33:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:19,591 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-11 02:33:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:33:19,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-10-11 02:33:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:19,595 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:33:19,595 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:33:19,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:33:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:33:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 02:33:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:33:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-11 02:33:19,597 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 11 [2021-10-11 02:33:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:19,597 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-11 02:33:19,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:33:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-11 02:33:19,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:33:19,598 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:19,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:19,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 02:33:19,799 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:19,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1189283757, now seen corresponding path program 1 times [2021-10-11 02:33:19,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:19,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439016175] [2021-10-11 02:33:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 02:33:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:19,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:33:19,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:20,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:20,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439016175] [2021-10-11 02:33:20,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:20,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:20,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580323653] [2021-10-11 02:33:20,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:33:20,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:20,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:33:20,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:20,026 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 6 states. [2021-10-11 02:33:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:20,158 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-11 02:33:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:33:20,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 02:33:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:20,159 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:33:20,159 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:33:20,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:33:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:33:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:33:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:33:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-11 02:33:20,162 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 14 [2021-10-11 02:33:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:20,162 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-11 02:33:20,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:33:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-11 02:33:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:33:20,163 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:20,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:20,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2021-10-11 02:33:20,363 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1786909176, now seen corresponding path program 1 times [2021-10-11 02:33:20,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:20,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416198663] [2021-10-11 02:33:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2021-10-11 02:33:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:20,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:33:20,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:20,532 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-11 02:33:20,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:20,551 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:20,555 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-11 02:33:20,556 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:20,567 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:20,568 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:20,569 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:10 [2021-10-11 02:33:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:20,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:33:20,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416198663] [2021-10-11 02:33:20,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:20,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:33:20,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550666447] [2021-10-11 02:33:20,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:33:20,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:33:20,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:33:20,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:33:20,690 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 8 states. [2021-10-11 02:33:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:21,021 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-10-11 02:33:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:33:21,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2021-10-11 02:33:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:21,023 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:33:21,023 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:33:21,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:33:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:33:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:33:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:33:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-10-11 02:33:21,026 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 15 [2021-10-11 02:33:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:21,026 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-10-11 02:33:21,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:33:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-10-11 02:33:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:33:21,027 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:21,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:21,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2021-10-11 02:33:21,233 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:33:21,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:21,249 INFO L82 PathProgramCache]: Analyzing trace with hash -440390409, now seen corresponding path program 1 times [2021-10-11 02:33:21,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:33:21,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173227394] [2021-10-11 02:33:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1841a1d4-4597-4d93-828b-4771a98ba3e1/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2021-10-11 02:33:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:21,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:21,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:21,589 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:33:21,589 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:33:21,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2021-10-11 02:33:21,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:21 BoogieIcfgContainer [2021-10-11 02:33:21,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:21,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:21,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:21,862 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:21,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:08" (3/4) ... [2021-10-11 02:33:21,867 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:33:21,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:21,868 INFO L168 Benchmark]: Toolchain (without parser) took 15255.87 ms. Allocated memory was 54.5 MB in the beginning and 125.8 MB in the end (delta: 71.3 MB). Free memory was 29.3 MB in the beginning and 57.6 MB in the end (delta: -28.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:21,868 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:21,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1113.82 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 44.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:21,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.27 ms. Allocated memory is still 67.1 MB. Free memory was 44.6 MB in the beginning and 42.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:21,876 INFO L168 Benchmark]: Boogie Preprocessor took 34.13 ms. Allocated memory is still 67.1 MB. Free memory was 42.4 MB in the beginning and 40.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:21,877 INFO L168 Benchmark]: RCFGBuilder took 935.63 ms. Allocated memory is still 67.1 MB. Free memory was 40.8 MB in the beginning and 32.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:21,877 INFO L168 Benchmark]: TraceAbstraction took 13062.69 ms. Allocated memory was 67.1 MB in the beginning and 125.8 MB in the end (delta: 58.7 MB). Free memory was 32.2 MB in the beginning and 57.6 MB in the end (delta: -25.5 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:21,878 INFO L168 Benchmark]: Witness Printer took 5.75 ms. Allocated memory is still 125.8 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:21,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1113.82 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 44.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.27 ms. Allocated memory is still 67.1 MB. Free memory was 44.6 MB in the beginning and 42.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.13 ms. Allocated memory is still 67.1 MB. Free memory was 42.4 MB in the beginning and 40.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 935.63 ms. Allocated memory is still 67.1 MB. Free memory was 40.8 MB in the beginning and 32.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13062.69 ms. Allocated memory was 67.1 MB in the beginning and 125.8 MB in the end (delta: 58.7 MB). Free memory was 32.2 MB in the beginning and 57.6 MB in the end (delta: -25.5 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.75 ms. Allocated memory is still 125.8 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 772]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 772. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) [L559] head->next VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] [L547] next->prev = new VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] [L548] new->next = next VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] [L549] new->prev = prev VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] [L550] prev->next = new VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] [L540] list->next = list VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] [L541] list->prev = list VAL [global_list_13={3:0}, ldv_global_msg_list={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 15 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 224 SDtfs, 578 SDslu, 279 SDs, 0 SdLazy, 616 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 15 MinimizatonAttempts, 79 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 121 ConstructedInterpolants, 7 QuantifiedInterpolants, 9640 SizeOfPredicates, 99 NumberOfNonLiveVariables, 996 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...