./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.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-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d88c88b73ce2cba22159e6d055a27f0c7e4ebba5 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d88c88b73ce2cba22159e6d055a27f0c7e4ebba5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:45:34,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:45:34,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:45:34,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:45:34,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:45:34,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:45:34,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:45:34,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:45:34,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:45:34,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:45:34,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:45:34,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:45:34,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:45:34,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:45:34,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:45:34,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:45:34,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:45:34,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:45:34,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:45:34,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:45:34,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:45:34,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:45:34,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:45:34,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:45:34,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:45:34,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:45:34,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:45:34,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:45:34,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:45:34,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:45:34,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:45:34,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:45:34,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:45:34,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:45:34,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:45:34,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:45:34,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:45:34,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:45:34,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:45:34,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:45:34,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:45:34,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 20:45:34,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:45:34,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:45:34,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:45:34,846 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:45:34,846 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:45:34,847 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:45:34,847 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:45:34,847 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:45:34,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:45:34,847 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:45:34,847 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:45:34,847 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:45:34,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:45:34,847 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:45:34,848 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:45:34,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 20:45:34,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 20:45:34,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:45:34,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:45:34,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:45:34,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:45:34,850 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:45:34,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:45:34,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:45:34,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:45:34,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:45:34,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:45:34,850 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:45:34,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:45:34,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:45:34,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:45:34,851 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88c88b73ce2cba22159e6d055a27f0c7e4ebba5 [2020-12-09 20:45:35,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:45:35,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:45:35,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:45:35,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:45:35,054 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:45:35,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2020-12-09 20:45:35,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data/afb84efc8/69cdbda79cdb40cb8fda20be77c99ab0/FLAG8f708bdd0 [2020-12-09 20:45:35,515 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:45:35,516 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2020-12-09 20:45:35,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data/afb84efc8/69cdbda79cdb40cb8fda20be77c99ab0/FLAG8f708bdd0 [2020-12-09 20:45:35,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data/afb84efc8/69cdbda79cdb40cb8fda20be77c99ab0 [2020-12-09 20:45:35,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:45:35,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:45:35,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:45:35,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:45:35,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:45:35,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:45:35" (1/1) ... [2020-12-09 20:45:35,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@988fea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:35, skipping insertion in model container [2020-12-09 20:45:35,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:45:35" (1/1) ... [2020-12-09 20:45:35,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:45:35,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:45:35,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:45:35,829 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-12-09 20:45:35,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@624d1abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:35, skipping insertion in model container [2020-12-09 20:45:35,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:45:35,830 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 20:45:35,832 INFO L168 Benchmark]: Toolchain (without parser) took 287.48 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 55.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:45:35,832 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:45:35,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.46 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 55.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:45:35,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.46 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 55.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:45:37,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:45:37,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:45:37,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:45:37,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:45:37,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:45:37,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:45:37,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:45:37,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:45:37,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:45:37,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:45:37,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:45:37,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:45:37,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:45:37,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:45:37,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:45:37,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:45:37,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:45:37,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:45:37,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:45:37,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:45:37,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:45:37,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:45:37,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:45:37,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:45:37,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:45:37,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:45:37,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:45:37,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:45:37,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:45:37,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:45:37,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:45:37,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:45:37,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:45:37,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:45:37,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:45:37,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:45:37,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:45:37,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:45:37,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:45:37,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:45:37,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 20:45:37,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:45:37,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:45:37,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:45:37,319 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:45:37,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:45:37,320 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:45:37,320 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:45:37,320 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:45:37,320 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:45:37,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 20:45:37,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 20:45:37,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:45:37,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:45:37,321 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 20:45:37,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:45:37,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:45:37,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:45:37,322 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 20:45:37,322 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 20:45:37,322 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 20:45:37,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:45:37,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:45:37,322 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 20:45:37,322 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 20:45:37,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:45:37,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:45:37,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:45:37,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 20:45:37,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:45:37,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:45:37,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:45:37,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:45:37,324 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 20:45:37,324 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:37,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:45:37,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:45:37,325 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88c88b73ce2cba22159e6d055a27f0c7e4ebba5 [2020-12-09 20:45:37,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:45:37,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:45:37,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:45:37,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:45:37,578 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:45:37,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2020-12-09 20:45:37,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data/f17f5a8f4/929e93d5de9645beb8f3862de293a7b7/FLAGbaaeea69a [2020-12-09 20:45:38,048 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:45:38,049 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2020-12-09 20:45:38,061 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data/f17f5a8f4/929e93d5de9645beb8f3862de293a7b7/FLAGbaaeea69a [2020-12-09 20:45:38,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/data/f17f5a8f4/929e93d5de9645beb8f3862de293a7b7 [2020-12-09 20:45:38,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:45:38,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:45:38,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:45:38,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:45:38,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:45:38,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443dcf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38, skipping insertion in model container [2020-12-09 20:45:38,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:45:38,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:45:38,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:45:38,422 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 20:45:38,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:45:38,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:45:38,469 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:45:38,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:45:38,570 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:45:38,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38 WrapperNode [2020-12-09 20:45:38,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:45:38,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:45:38,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:45:38,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:45:38,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:45:38,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:45:38,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:45:38,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:45:38,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... [2020-12-09 20:45:38,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:45:38,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:45:38,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:45:38,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:45:38,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:45:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 20:45:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 20:45:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 20:45:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:45:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 20:45:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 20:45:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 20:45:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 20:45:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:45:38,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:45:39,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:45:39,151 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2020-12-09 20:45:39,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:45:39 BoogieIcfgContainer [2020-12-09 20:45:39,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:45:39,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:45:39,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:45:39,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:45:39,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:45:38" (1/3) ... [2020-12-09 20:45:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed50652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:45:39, skipping insertion in model container [2020-12-09 20:45:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:45:38" (2/3) ... [2020-12-09 20:45:39,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed50652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:45:39, skipping insertion in model container [2020-12-09 20:45:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:45:39" (3/3) ... [2020-12-09 20:45:39,159 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-1.i [2020-12-09 20:45:39,169 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:45:39,173 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2020-12-09 20:45:39,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2020-12-09 20:45:39,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:45:39,198 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 20:45:39,198 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:45:39,198 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:45:39,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:45:39,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:45:39,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:45:39,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:45:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-12-09 20:45:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 20:45:39,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:39,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 20:45:39,216 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:39,221 INFO L82 PathProgramCache]: Analyzing trace with hash 889508776, now seen corresponding path program 1 times [2020-12-09 20:45:39,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:39,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712647824] [2020-12-09 20:45:39,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:39,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 20:45:39,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:39,355 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:39,356 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:39,363 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:39,363 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:39,364 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 20:45:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:39,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:39,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712647824] [2020-12-09 20:45:39,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:45:39,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:45:39,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203843101] [2020-12-09 20:45:39,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:45:39,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:39,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:45:39,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:45:39,402 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 5 states. [2020-12-09 20:45:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:39,792 INFO L93 Difference]: Finished difference Result 212 states and 230 transitions. [2020-12-09 20:45:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:45:39,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 20:45:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:39,805 INFO L225 Difference]: With dead ends: 212 [2020-12-09 20:45:39,806 INFO L226 Difference]: Without dead ends: 204 [2020-12-09 20:45:39,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:45:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-12-09 20:45:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 73. [2020-12-09 20:45:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-09 20:45:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-12-09 20:45:39,846 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 6 [2020-12-09 20:45:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:39,846 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-12-09 20:45:39,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:45:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-12-09 20:45:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 20:45:39,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:39,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 20:45:40,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 20:45:40,048 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:40,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:40,050 INFO L82 PathProgramCache]: Analyzing trace with hash 889568358, now seen corresponding path program 1 times [2020-12-09 20:45:40,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:40,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161034093] [2020-12-09 20:45:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:40,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 20:45:40,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:40,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:40,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161034093] [2020-12-09 20:45:40,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:45:40,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:45:40,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884259579] [2020-12-09 20:45:40,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:45:40,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:40,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:45:40,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:45:40,206 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 4 states. [2020-12-09 20:45:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:40,239 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2020-12-09 20:45:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:45:40,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 20:45:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:40,241 INFO L225 Difference]: With dead ends: 163 [2020-12-09 20:45:40,242 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 20:45:40,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:45:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 20:45:40,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 71. [2020-12-09 20:45:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-09 20:45:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-12-09 20:45:40,248 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 6 [2020-12-09 20:45:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:40,248 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-12-09 20:45:40,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:45:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-12-09 20:45:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 20:45:40,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:40,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:40,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 20:45:40,451 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:40,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1804968328, now seen corresponding path program 1 times [2020-12-09 20:45:40,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:40,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927832228] [2020-12-09 20:45:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:40,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 20:45:40,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:40,567 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:40,568 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:40,574 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:40,575 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:40,576 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 20:45:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:40,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:40,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927832228] [2020-12-09 20:45:40,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:45:40,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 20:45:40,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941373512] [2020-12-09 20:45:40,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:45:40,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:45:40,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:45:40,625 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 6 states. [2020-12-09 20:45:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:40,898 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2020-12-09 20:45:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:45:40,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-09 20:45:40,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:40,900 INFO L225 Difference]: With dead ends: 162 [2020-12-09 20:45:40,900 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 20:45:40,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 20:45:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 20:45:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 70. [2020-12-09 20:45:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 20:45:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-09 20:45:40,906 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 7 [2020-12-09 20:45:40,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:40,907 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-09 20:45:40,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:45:40,907 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-09 20:45:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 20:45:40,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:40,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:41,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 20:45:41,110 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:41,112 INFO L82 PathProgramCache]: Analyzing trace with hash 119421555, now seen corresponding path program 1 times [2020-12-09 20:45:41,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:41,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351451110] [2020-12-09 20:45:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:41,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:41,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:41,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:41,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351451110] [2020-12-09 20:45:41,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:45:41,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:45:41,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078966182] [2020-12-09 20:45:41,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:45:41,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:41,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:45:41,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:45:41,253 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 4 states. [2020-12-09 20:45:41,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:41,271 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-12-09 20:45:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:45:41,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 20:45:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:41,273 INFO L225 Difference]: With dead ends: 116 [2020-12-09 20:45:41,273 INFO L226 Difference]: Without dead ends: 116 [2020-12-09 20:45:41,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:45:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-09 20:45:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 70. [2020-12-09 20:45:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 20:45:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-12-09 20:45:41,277 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 8 [2020-12-09 20:45:41,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:41,277 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-12-09 20:45:41,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:45:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-12-09 20:45:41,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 20:45:41,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:41,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:41,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 20:45:41,480 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash 176679857, now seen corresponding path program 1 times [2020-12-09 20:45:41,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:41,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547824996] [2020-12-09 20:45:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:41,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 20:45:41,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:41,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:41,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547824996] [2020-12-09 20:45:41,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:45:41,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:45:41,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777935836] [2020-12-09 20:45:41,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:45:41,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:41,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:45:41,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:45:41,558 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 4 states. [2020-12-09 20:45:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:41,580 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2020-12-09 20:45:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:45:41,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 20:45:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:41,581 INFO L225 Difference]: With dead ends: 142 [2020-12-09 20:45:41,581 INFO L226 Difference]: Without dead ends: 142 [2020-12-09 20:45:41,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:45:41,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-09 20:45:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 72. [2020-12-09 20:45:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-09 20:45:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-12-09 20:45:41,585 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 8 [2020-12-09 20:45:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:41,585 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-12-09 20:45:41,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:45:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-12-09 20:45:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 20:45:41,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:41,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:41,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 20:45:41,787 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2147150397, now seen corresponding path program 1 times [2020-12-09 20:45:41,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:41,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925828133] [2020-12-09 20:45:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:41,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 20:45:41,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:41,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:41,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925828133] [2020-12-09 20:45:41,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:45:41,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:45:41,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494118321] [2020-12-09 20:45:41,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:45:41,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:41,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:45:41,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:45:41,974 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 3 states. [2020-12-09 20:45:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:42,063 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-12-09 20:45:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:45:42,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-09 20:45:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:42,064 INFO L225 Difference]: With dead ends: 98 [2020-12-09 20:45:42,064 INFO L226 Difference]: Without dead ends: 95 [2020-12-09 20:45:42,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:45:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-09 20:45:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2020-12-09 20:45:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 20:45:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-12-09 20:45:42,067 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 11 [2020-12-09 20:45:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:42,067 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-12-09 20:45:42,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:45:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-12-09 20:45:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 20:45:42,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:42,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:42,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 20:45:42,270 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:42,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2147148924, now seen corresponding path program 1 times [2020-12-09 20:45:42,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:42,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265223891] [2020-12-09 20:45:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:42,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 20:45:42,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:42,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:42,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265223891] [2020-12-09 20:45:42,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:45:42,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 20:45:42,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556880254] [2020-12-09 20:45:42,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:45:42,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:42,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:45:42,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:45:42,379 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 5 states. [2020-12-09 20:45:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:42,415 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-09 20:45:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:45:42,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 20:45:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:42,416 INFO L225 Difference]: With dead ends: 77 [2020-12-09 20:45:42,416 INFO L226 Difference]: Without dead ends: 70 [2020-12-09 20:45:42,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:45:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-09 20:45:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-12-09 20:45:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-09 20:45:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-12-09 20:45:42,420 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 11 [2020-12-09 20:45:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:42,420 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-12-09 20:45:42,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:45:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-12-09 20:45:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 20:45:42,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:42,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:42,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 20:45:42,623 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:42,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:42,625 INFO L82 PathProgramCache]: Analyzing trace with hash 820865718, now seen corresponding path program 1 times [2020-12-09 20:45:42,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:42,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922245627] [2020-12-09 20:45:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:42,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 20:45:42,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:42,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:42,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922245627] [2020-12-09 20:45:42,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:45:42,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:45:42,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670228396] [2020-12-09 20:45:42,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:45:42,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:42,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:45:42,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:45:42,702 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 4 states. [2020-12-09 20:45:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:42,714 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-12-09 20:45:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:45:42,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 20:45:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:42,715 INFO L225 Difference]: With dead ends: 69 [2020-12-09 20:45:42,715 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 20:45:42,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:45:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 20:45:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-09 20:45:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 20:45:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-12-09 20:45:42,718 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 12 [2020-12-09 20:45:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:42,718 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-12-09 20:45:42,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:45:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-12-09 20:45:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:45:42,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:42,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:42,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 20:45:42,920 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:42,922 INFO L82 PathProgramCache]: Analyzing trace with hash -382225646, now seen corresponding path program 1 times [2020-12-09 20:45:42,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:42,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580763175] [2020-12-09 20:45:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:42,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:42,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:43,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:43,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580763175] [2020-12-09 20:45:43,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [408697523] [2020-12-09 20:45:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:43,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:43,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:43,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:43,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859012665] [2020-12-09 20:45:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:43,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 20:45:43,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:43,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:43,213 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:43,215 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:43,215 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:43,215 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 20:45:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:43,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:43,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:45:43,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5, 5] total 13 [2020-12-09 20:45:43,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662319015] [2020-12-09 20:45:43,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 20:45:43,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:43,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 20:45:43,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-09 20:45:43,277 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 7 states. [2020-12-09 20:45:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:43,588 INFO L93 Difference]: Finished difference Result 150 states and 159 transitions. [2020-12-09 20:45:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:45:43,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-09 20:45:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:43,590 INFO L225 Difference]: With dead ends: 150 [2020-12-09 20:45:43,590 INFO L226 Difference]: Without dead ends: 150 [2020-12-09 20:45:43,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-12-09 20:45:43,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-09 20:45:43,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 68. [2020-12-09 20:45:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-09 20:45:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-12-09 20:45:43,593 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 13 [2020-12-09 20:45:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:43,593 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-12-09 20:45:43,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 20:45:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-12-09 20:45:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:45:43,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:43,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:44,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:44,197 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:44,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:44,199 INFO L82 PathProgramCache]: Analyzing trace with hash -382225645, now seen corresponding path program 1 times [2020-12-09 20:45:44,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:44,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969086463] [2020-12-09 20:45:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/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 [2020-12-09 20:45:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:44,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:44,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:44,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:44,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969086463] [2020-12-09 20:45:44,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [457464656] [2020-12-09 20:45:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:44,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:44,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:44,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:44,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328866745] [2020-12-09 20:45:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:44,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 20:45:44,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:44,506 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:44,507 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:44,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:44,513 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:44,513 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 20:45:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:44,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:44,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:45:44,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2020-12-09 20:45:44,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472130992] [2020-12-09 20:45:44,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 20:45:44,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:44,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 20:45:44,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-12-09 20:45:44,609 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 8 states. [2020-12-09 20:45:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:45,009 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2020-12-09 20:45:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 20:45:45,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-09 20:45:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:45,011 INFO L225 Difference]: With dead ends: 161 [2020-12-09 20:45:45,011 INFO L226 Difference]: Without dead ends: 161 [2020-12-09 20:45:45,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-12-09 20:45:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-09 20:45:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 67. [2020-12-09 20:45:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-09 20:45:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-12-09 20:45:45,013 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 13 [2020-12-09 20:45:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:45,013 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-12-09 20:45:45,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 20:45:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-12-09 20:45:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:45:45,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:45,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:45,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt,13 mathsat -unsat_core_generation=3,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:45,616 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2046988466, now seen corresponding path program 1 times [2020-12-09 20:45:45,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:45,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125752804] [2020-12-09 20:45:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/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 [2020-12-09 20:45:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:45,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:45,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:45,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:45,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125752804] [2020-12-09 20:45:45,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1620751520] [2020-12-09 20:45:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:45,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 20:45:45,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:45,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:45,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 20:45:45,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2020-12-09 20:45:45,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34564944] [2020-12-09 20:45:45,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:45:45,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:45,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:45:45,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-09 20:45:45,842 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 5 states. [2020-12-09 20:45:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:45,869 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-09 20:45:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:45:45,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 20:45:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:45,870 INFO L225 Difference]: With dead ends: 67 [2020-12-09 20:45:45,870 INFO L226 Difference]: Without dead ends: 67 [2020-12-09 20:45:45,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-12-09 20:45:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-09 20:45:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-09 20:45:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-09 20:45:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-12-09 20:45:45,872 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 15 [2020-12-09 20:45:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:45,872 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-12-09 20:45:45,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:45:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-12-09 20:45:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:45:45,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:45,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:46,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3,17 cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:46,274 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:46,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2048342003, now seen corresponding path program 1 times [2020-12-09 20:45:46,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:46,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302172387] [2020-12-09 20:45:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:46,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:46,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:46,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:46,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302172387] [2020-12-09 20:45:46,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1663681518] [2020-12-09 20:45:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:46,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:46,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:46,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:46,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217958256] [2020-12-09 20:45:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:46,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 20:45:46,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:46,601 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:46,602 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:46,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:46,604 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:46,604 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 20:45:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:46,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:46,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:45:46,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5, 5] total 13 [2020-12-09 20:45:46,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475898627] [2020-12-09 20:45:46,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 20:45:46,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:46,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 20:45:46,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-09 20:45:46,659 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-12-09 20:45:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:46,891 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2020-12-09 20:45:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:45:46,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-09 20:45:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:46,892 INFO L225 Difference]: With dead ends: 108 [2020-12-09 20:45:46,892 INFO L226 Difference]: Without dead ends: 108 [2020-12-09 20:45:46,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-12-09 20:45:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-09 20:45:46,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 65. [2020-12-09 20:45:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 20:45:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-12-09 20:45:46,894 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 15 [2020-12-09 20:45:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:46,894 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-12-09 20:45:46,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 20:45:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-12-09 20:45:46,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:45:46,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:46,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:47,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3,19 cvc4 --incremental --print-success --lang smt,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:47,497 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:47,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2048342004, now seen corresponding path program 1 times [2020-12-09 20:45:47,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:47,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470886262] [2020-12-09 20:45:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:47,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:47,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:47,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:47,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470886262] [2020-12-09 20:45:47,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926384258] [2020-12-09 20:45:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:47,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:47,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:47,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:47,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317886482] [2020-12-09 20:45:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:47,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 20:45:47,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:47,791 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:47,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:47,796 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:47,796 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:47,796 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 20:45:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:47,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:47,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:45:47,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2020-12-09 20:45:47,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971570095] [2020-12-09 20:45:47,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 20:45:47,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:47,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 20:45:47,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-12-09 20:45:47,895 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 8 states. [2020-12-09 20:45:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:48,209 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-12-09 20:45:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 20:45:48,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-09 20:45:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:48,211 INFO L225 Difference]: With dead ends: 110 [2020-12-09 20:45:48,211 INFO L226 Difference]: Without dead ends: 110 [2020-12-09 20:45:48,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-12-09 20:45:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-09 20:45:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 63. [2020-12-09 20:45:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 20:45:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-12-09 20:45:48,212 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 15 [2020-12-09 20:45:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:48,213 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-12-09 20:45:48,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 20:45:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-12-09 20:45:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 20:45:48,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:48,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:48,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3,22 cvc4 --incremental --print-success --lang smt,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:48,816 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:48,817 INFO L82 PathProgramCache]: Analyzing trace with hash -927294538, now seen corresponding path program 1 times [2020-12-09 20:45:48,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:48,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543689923] [2020-12-09 20:45:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:48,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:48,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:48,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:48,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543689923] [2020-12-09 20:45:48,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1384033731] [2020-12-09 20:45:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:49,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 20:45:49,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:49,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:49,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 20:45:49,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 12 [2020-12-09 20:45:49,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070818967] [2020-12-09 20:45:49,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:45:49,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:45:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-09 20:45:49,082 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 6 states. [2020-12-09 20:45:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:49,132 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-12-09 20:45:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:45:49,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 20:45:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:49,133 INFO L225 Difference]: With dead ends: 63 [2020-12-09 20:45:49,134 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 20:45:49,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-12-09 20:45:49,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 20:45:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-12-09 20:45:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 20:45:49,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-09 20:45:49,135 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 16 [2020-12-09 20:45:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:49,135 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-09 20:45:49,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:45:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-09 20:45:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 20:45:49,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:49,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:49,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt,24 mathsat -unsat_core_generation=3 [2020-12-09 20:45:49,537 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1235581409, now seen corresponding path program 1 times [2020-12-09 20:45:49,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:49,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366371351] [2020-12-09 20:45:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:49,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:49,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:49,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:49,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366371351] [2020-12-09 20:45:49,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433570075] [2020-12-09 20:45:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 27 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:49,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:49,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:49,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:49,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861276083] [2020-12-09 20:45:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:49,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 20:45:49,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:49,857 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:49,857 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:49,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:49,859 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:49,859 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 20:45:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:49,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:49,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:45:49,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5, 5] total 13 [2020-12-09 20:45:49,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993850864] [2020-12-09 20:45:49,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 20:45:49,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:49,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 20:45:49,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-09 20:45:49,914 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 7 states. [2020-12-09 20:45:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:50,127 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2020-12-09 20:45:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:45:50,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-09 20:45:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:50,128 INFO L225 Difference]: With dead ends: 92 [2020-12-09 20:45:50,128 INFO L226 Difference]: Without dead ends: 92 [2020-12-09 20:45:50,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-12-09 20:45:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-09 20:45:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 61. [2020-12-09 20:45:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-09 20:45:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-12-09 20:45:50,129 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 20 [2020-12-09 20:45:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:50,130 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-12-09 20:45:50,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 20:45:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-12-09 20:45:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 20:45:50,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:50,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:50,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 cvc4 --incremental --print-success --lang smt,26 mathsat -unsat_core_generation=3 [2020-12-09 20:45:50,732 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:50,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:50,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1235581408, now seen corresponding path program 1 times [2020-12-09 20:45:50,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:50,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364682987] [2020-12-09 20:45:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:50,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:50,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:50,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:50,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364682987] [2020-12-09 20:45:50,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [130095694] [2020-12-09 20:45:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 30 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:50,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:50,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:50,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:51,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061121504] [2020-12-09 20:45:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:51,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-09 20:45:51,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:51,106 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:51,107 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:51,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:51,111 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:51,111 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 20:45:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:51,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:51,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:45:51,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2020-12-09 20:45:51,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125982407] [2020-12-09 20:45:51,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 20:45:51,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:51,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 20:45:51,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-12-09 20:45:51,197 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 8 states. [2020-12-09 20:45:51,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:51,469 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-09 20:45:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 20:45:51,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-09 20:45:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:51,470 INFO L225 Difference]: With dead ends: 94 [2020-12-09 20:45:51,470 INFO L226 Difference]: Without dead ends: 94 [2020-12-09 20:45:51,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-12-09 20:45:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-09 20:45:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2020-12-09 20:45:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 20:45:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-12-09 20:45:51,472 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 20 [2020-12-09 20:45:51,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:51,472 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-12-09 20:45:51,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 20:45:51,472 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-12-09 20:45:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 20:45:51,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:51,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:52,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 cvc4 --incremental --print-success --lang smt,29 mathsat -unsat_core_generation=3,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:52,075 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:52,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1323560689, now seen corresponding path program 1 times [2020-12-09 20:45:52,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:52,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128205679] [2020-12-09 20:45:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 32 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:52,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:52,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:52,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:52,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128205679] [2020-12-09 20:45:52,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [620489643] [2020-12-09 20:45:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 33 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:52,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 20:45:52,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:52,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:52,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 20:45:52,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 12 [2020-12-09 20:45:52,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38093522] [2020-12-09 20:45:52,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:45:52,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:52,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:45:52,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-09 20:45:52,334 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 6 states. [2020-12-09 20:45:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:52,381 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-12-09 20:45:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:45:52,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-09 20:45:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:52,382 INFO L225 Difference]: With dead ends: 59 [2020-12-09 20:45:52,382 INFO L226 Difference]: Without dead ends: 59 [2020-12-09 20:45:52,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-12-09 20:45:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-09 20:45:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-09 20:45:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 20:45:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-12-09 20:45:52,384 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 23 [2020-12-09 20:45:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:52,384 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-12-09 20:45:52,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:45:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-12-09 20:45:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 20:45:52,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:52,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:52,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 cvc4 --incremental --print-success --lang smt,32 mathsat -unsat_core_generation=3 [2020-12-09 20:45:52,786 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:52,787 INFO L82 PathProgramCache]: Analyzing trace with hash -241133049, now seen corresponding path program 1 times [2020-12-09 20:45:52,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:52,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590526774] [2020-12-09 20:45:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 34 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:52,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:52,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:52,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:52,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590526774] [2020-12-09 20:45:52,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [768853859] [2020-12-09 20:45:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 35 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:53,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 20:45:53,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:45:53,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:53,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 20:45:53,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 13 [2020-12-09 20:45:53,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335674372] [2020-12-09 20:45:53,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 20:45:53,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:53,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 20:45:53,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-09 20:45:53,075 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 7 states. [2020-12-09 20:45:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:53,156 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-12-09 20:45:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:45:53,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-12-09 20:45:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:53,158 INFO L225 Difference]: With dead ends: 59 [2020-12-09 20:45:53,158 INFO L226 Difference]: Without dead ends: 59 [2020-12-09 20:45:53,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-12-09 20:45:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-09 20:45:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-09 20:45:53,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 20:45:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-12-09 20:45:53,160 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 28 [2020-12-09 20:45:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:53,161 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-12-09 20:45:53,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 20:45:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-12-09 20:45:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 20:45:53,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:53,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:53,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 cvc4 --incremental --print-success --lang smt,34 mathsat -unsat_core_generation=3 [2020-12-09 20:45:53,563 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:53,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:53,564 INFO L82 PathProgramCache]: Analyzing trace with hash -241134522, now seen corresponding path program 1 times [2020-12-09 20:45:53,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:53,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204741156] [2020-12-09 20:45:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 36 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:53,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:53,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:53,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:53,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204741156] [2020-12-09 20:45:53,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [657069727] [2020-12-09 20:45:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 37 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:53,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:53,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:53,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:53,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162108268] [2020-12-09 20:45:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:53,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 20:45:53,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:53,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:54,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 20:45:54,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2020-12-09 20:45:54,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215293275] [2020-12-09 20:45:54,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 20:45:54,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:54,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 20:45:54,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 20:45:54,014 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 8 states. [2020-12-09 20:45:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:54,065 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-12-09 20:45:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:45:54,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-09 20:45:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:54,066 INFO L225 Difference]: With dead ends: 62 [2020-12-09 20:45:54,066 INFO L226 Difference]: Without dead ends: 62 [2020-12-09 20:45:54,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-09 20:45:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-09 20:45:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-09 20:45:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-09 20:45:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-12-09 20:45:54,068 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 28 [2020-12-09 20:45:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:54,068 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-12-09 20:45:54,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 20:45:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-12-09 20:45:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 20:45:54,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:54,068 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:54,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 mathsat -unsat_core_generation=3,37 cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:54,671 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:54,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:54,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1192883934, now seen corresponding path program 2 times [2020-12-09 20:45:54,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:54,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792311073] [2020-12-09 20:45:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 39 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:54,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:45:54,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:54,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:55,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792311073] [2020-12-09 20:45:55,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [21478269] [2020-12-09 20:45:55,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 40 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:55,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-09 20:45:55,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 20:45:55,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-09 20:45:55,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:55,172 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:55,173 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:55,177 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:55,178 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:55,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 20:45:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 20:45:55,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:55,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 20:45:55,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8] total 23 [2020-12-09 20:45:55,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915565226] [2020-12-09 20:45:55,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 20:45:55,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:55,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 20:45:55,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-12-09 20:45:55,379 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 11 states. [2020-12-09 20:45:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:55,838 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-12-09 20:45:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 20:45:55,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-12-09 20:45:55,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:55,840 INFO L225 Difference]: With dead ends: 60 [2020-12-09 20:45:55,840 INFO L226 Difference]: Without dead ends: 60 [2020-12-09 20:45:55,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2020-12-09 20:45:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-09 20:45:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-09 20:45:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 20:45:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-12-09 20:45:55,841 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 31 [2020-12-09 20:45:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:55,842 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-12-09 20:45:55,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 20:45:55,842 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-12-09 20:45:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 20:45:55,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:55,842 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:56,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 mathsat -unsat_core_generation=3,40 cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:56,244 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:56,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1192883935, now seen corresponding path program 1 times [2020-12-09 20:45:56,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:56,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050079262] [2020-12-09 20:45:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 41 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:56,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:45:56,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:56,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:56,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050079262] [2020-12-09 20:45:56,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1147768315] [2020-12-09 20:45:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 42 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:56,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:45:56,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:56,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:56,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964712083] [2020-12-09 20:45:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:56,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 20:45:56,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:56,869 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:56,870 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:56,871 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:56,871 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:56,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 20:45:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 20:45:56,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:56,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:45:56,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8, 8, 8] total 20 [2020-12-09 20:45:56,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869899220] [2020-12-09 20:45:56,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 20:45:56,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:56,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 20:45:56,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-12-09 20:45:56,967 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 8 states. [2020-12-09 20:45:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:57,206 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-12-09 20:45:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 20:45:57,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-09 20:45:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:57,207 INFO L225 Difference]: With dead ends: 62 [2020-12-09 20:45:57,207 INFO L226 Difference]: Without dead ends: 62 [2020-12-09 20:45:57,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2020-12-09 20:45:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-09 20:45:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-12-09 20:45:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 20:45:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-12-09 20:45:57,209 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 31 [2020-12-09 20:45:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:57,209 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-12-09 20:45:57,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 20:45:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-12-09 20:45:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 20:45:57,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:57,210 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:57,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 mathsat -unsat_core_generation=3,42 cvc4 --incremental --print-success --lang smt,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:57,812 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:57,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:57,813 INFO L82 PathProgramCache]: Analyzing trace with hash 942061605, now seen corresponding path program 1 times [2020-12-09 20:45:57,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:57,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294440762] [2020-12-09 20:45:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 44 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:57,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:45:57,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:58,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:58,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294440762] [2020-12-09 20:45:58,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1450496688] [2020-12-09 20:45:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 45 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:58,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:45:58,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:58,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:58,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462510632] [2020-12-09 20:45:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:45:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:58,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-09 20:45:58,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:58,447 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:45:58,447 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:45:58,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:45:58,449 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:45:58,449 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 20:45:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 20:45:58,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:45:58,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:45:58,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 8, 8] total 21 [2020-12-09 20:45:58,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426047540] [2020-12-09 20:45:58,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 20:45:58,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:45:58,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 20:45:58,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-12-09 20:45:58,563 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 9 states. [2020-12-09 20:45:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:45:58,887 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2020-12-09 20:45:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 20:45:58,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-09 20:45:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:45:58,888 INFO L225 Difference]: With dead ends: 60 [2020-12-09 20:45:58,888 INFO L226 Difference]: Without dead ends: 60 [2020-12-09 20:45:58,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2020-12-09 20:45:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-09 20:45:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-12-09 20:45:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-09 20:45:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-12-09 20:45:58,890 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 37 [2020-12-09 20:45:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:45:58,890 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-12-09 20:45:58,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 20:45:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-12-09 20:45:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 20:45:58,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:45:58,891 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:45:59,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 mathsat -unsat_core_generation=3,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:59,493 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:45:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:45:59,495 INFO L82 PathProgramCache]: Analyzing trace with hash 942061606, now seen corresponding path program 1 times [2020-12-09 20:45:59,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:45:59,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456057982] [2020-12-09 20:45:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 47 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with mathsat -unsat_core_generation=3 [2020-12-09 20:45:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:59,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:45:59,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:45:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:59,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:45:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:45:59,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456057982] [2020-12-09 20:45:59,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1299799545] [2020-12-09 20:45:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 48 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:45:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:45:59,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:45:59,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:46:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:00,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:46:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:00,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838446777] [2020-12-09 20:46:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:46:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:46:00,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 76 conjunts are in the unsatisfiable core [2020-12-09 20:46:00,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:46:00,150 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 20:46:00,151 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,156 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:46:00,156 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,156 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 20:46:00,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,313 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2020-12-09 20:46:00,314 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:46:00,332 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,333 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:51 [2020-12-09 20:46:00,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,470 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 51 [2020-12-09 20:46:00,472 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,513 INFO L625 ElimStorePlain]: treesize reduction 12, result has 82.6 percent of original size [2020-12-09 20:46:00,513 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,514 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:53 [2020-12-09 20:46:00,523 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 [2020-12-09 20:46:00,524 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,559 INFO L625 ElimStorePlain]: treesize reduction 5, result has 92.4 percent of original size [2020-12-09 20:46:00,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,570 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:46:00,570 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 51 [2020-12-09 20:46:00,572 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:46:00,583 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:46:00,583 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:75, output treesize:40 [2020-12-09 20:46:00,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,981 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 20:46:00,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,984 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 20:46:00,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 20:46:00,985 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 20:46:00,986 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 20:46:00,993 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:46:00,993 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 191 treesize of output 163 [2020-12-09 20:46:00,996 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:46:01,021 INFO L625 ElimStorePlain]: treesize reduction 72, result has 48.6 percent of original size [2020-12-09 20:46:01,022 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:46:01,022 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:194, output treesize:68 [2020-12-09 20:46:01,196 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:46:01,197 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 58 [2020-12-09 20:46:01,197 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 20:46:01,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 20:46:01,202 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 20:46:01,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:93, output treesize:49 [2020-12-09 20:46:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 20:46:01,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:46:01,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 20:46:01,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [8, 8, 8, 8] total 35 [2020-12-09 20:46:01,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879302977] [2020-12-09 20:46:01,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-09 20:46:01,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:46:01,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-09 20:46:01,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2020-12-09 20:46:01,383 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 23 states. [2020-12-09 20:46:02,132 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-12-09 20:46:02,456 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-12-09 20:46:02,723 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-12-09 20:46:03,062 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2020-12-09 20:46:03,484 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 113 [2020-12-09 20:46:03,935 WARN L197 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2020-12-09 20:46:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:46:05,670 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-12-09 20:46:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-09 20:46:05,670 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 37 [2020-12-09 20:46:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:46:05,671 INFO L225 Difference]: With dead ends: 40 [2020-12-09 20:46:05,671 INFO L226 Difference]: Without dead ends: 40 [2020-12-09 20:46:05,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=435, Invalid=2535, Unknown=0, NotChecked=0, Total=2970 [2020-12-09 20:46:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-09 20:46:05,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-09 20:46:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 20:46:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-12-09 20:46:05,673 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2020-12-09 20:46:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:46:05,673 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-12-09 20:46:05,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-09 20:46:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-12-09 20:46:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 20:46:05,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:46:05,674 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:46:06,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 cvc4 --incremental --print-success --lang smt,47 mathsat -unsat_core_generation=3 [2020-12-09 20:46:06,276 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:46:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:46:06,277 INFO L82 PathProgramCache]: Analyzing trace with hash -916062869, now seen corresponding path program 1 times [2020-12-09 20:46:06,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:46:06,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933338430] [2020-12-09 20:46:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 50 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with mathsat -unsat_core_generation=3 [2020-12-09 20:46:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:46:06,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:46:06,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:46:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:06,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:46:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:06,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933338430] [2020-12-09 20:46:06,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1078351718] [2020-12-09 20:46:06,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 51 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:46:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:46:06,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:46:06,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:46:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:06,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:46:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:06,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54259016] [2020-12-09 20:46:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:46:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:46:06,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 20:46:06,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:46:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:07,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:46:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:07,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 20:46:07,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2020-12-09 20:46:07,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767442131] [2020-12-09 20:46:07,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-09 20:46:07,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:46:07,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-09 20:46:07,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-12-09 20:46:07,257 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 19 states. [2020-12-09 20:46:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:46:07,617 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-12-09 20:46:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 20:46:07,617 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-12-09 20:46:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:46:07,618 INFO L225 Difference]: With dead ends: 46 [2020-12-09 20:46:07,618 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 20:46:07,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 208 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2020-12-09 20:46:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 20:46:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-09 20:46:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-09 20:46:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-12-09 20:46:07,619 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 39 [2020-12-09 20:46:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:46:07,619 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-12-09 20:46:07,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-09 20:46:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-12-09 20:46:07,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-09 20:46:07,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:46:07,620 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:46:08,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,51 cvc4 --incremental --print-success --lang smt,50 mathsat -unsat_core_generation=3 [2020-12-09 20:46:08,222 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:46:08,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:46:08,223 INFO L82 PathProgramCache]: Analyzing trace with hash 533981931, now seen corresponding path program 2 times [2020-12-09 20:46:08,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:46:08,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007449203] [2020-12-09 20:46:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 53 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with mathsat -unsat_core_generation=3 [2020-12-09 20:46:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:46:08,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 20:46:08,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:46:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:08,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:46:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:09,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007449203] [2020-12-09 20:46:09,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [383038920] [2020-12-09 20:46:09,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/cvc4 Starting monitored process 54 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with cvc4 --incremental --print-success --lang smt [2020-12-09 20:46:09,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 20:46:09,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 20:46:09,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 20:46:09,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:46:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:09,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:46:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:09,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154690801] [2020-12-09 20:46:09,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:46:13,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 20:46:13,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 20:46:13,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 20:46:13,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:46:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:13,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:46:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:46:14,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 20:46:14,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 37 [2020-12-09 20:46:14,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575078450] [2020-12-09 20:46:14,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-09 20:46:14,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:46:14,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-09 20:46:14,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2020-12-09 20:46:14,639 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 37 states. [2020-12-09 20:46:15,102 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-09 20:46:15,329 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-12-09 20:46:15,533 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-09 20:46:16,277 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-09 20:46:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:46:16,551 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-09 20:46:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-09 20:46:16,551 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 45 [2020-12-09 20:46:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:46:16,552 INFO L225 Difference]: With dead ends: 58 [2020-12-09 20:46:16,552 INFO L226 Difference]: Without dead ends: 58 [2020-12-09 20:46:16,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 223 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=616, Invalid=1736, Unknown=0, NotChecked=0, Total=2352 [2020-12-09 20:46:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-09 20:46:16,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-09 20:46:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 20:46:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-12-09 20:46:16,554 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 45 [2020-12-09 20:46:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:46:16,554 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-12-09 20:46:16,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-09 20:46:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-12-09 20:46:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-09 20:46:16,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:46:16,554 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:46:17,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 cvc4 --incremental --print-success --lang smt,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,53 mathsat -unsat_core_generation=3 [2020-12-09 20:46:17,156 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-09 20:46:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:46:17,157 INFO L82 PathProgramCache]: Analyzing trace with hash -931547029, now seen corresponding path program 3 times [2020-12-09 20:46:17,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:46:17,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558256372] [2020-12-09 20:46:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec5ef6f0-c300-47a8-87c1-056e2abdc9dc/bin/utaipan/mathsat Starting monitored process 56 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with mathsat -unsat_core_generation=3 [2020-12-09 20:46:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:46:17,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:46:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:46:17,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:46:17,813 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 20:46:17,814 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 20:46:18,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 mathsat -unsat_core_generation=3 [2020-12-09 20:46:18,027 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,027 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,028 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,028 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,028 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,028 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,029 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,029 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,029 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,029 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,029 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,030 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,030 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,030 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,030 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,031 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,031 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,031 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,031 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,031 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,032 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,032 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,032 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,032 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,032 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,033 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,033 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,033 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,033 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,033 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,034 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,034 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,034 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,034 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,034 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,035 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,035 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,035 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,035 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,035 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,036 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,036 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,036 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,036 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,036 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,036 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,037 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,037 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,037 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,037 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,037 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,037 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,038 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,038 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,038 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,038 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,038 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,039 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,039 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,039 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,039 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,039 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,039 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,040 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,040 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,040 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,040 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,040 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,040 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,041 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,041 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,041 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,041 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,041 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,041 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,042 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,042 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,042 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,042 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,042 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,043 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,043 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,043 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,043 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,043 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,043 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,044 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,044 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,044 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,044 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,044 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,044 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,044 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,045 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,045 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,045 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,045 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,045 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,045 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,045 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,046 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,046 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,046 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,046 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,046 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,050 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,050 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,050 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,050 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,050 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,050 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,051 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,051 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,051 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,051 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,051 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,051 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,051 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,052 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,052 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,052 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,052 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,052 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,052 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,052 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,053 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,053 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,053 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,053 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,053 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,053 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,053 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,053 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,054 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,054 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,054 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,054 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,054 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,054 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,054 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,055 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,055 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,055 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,055 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,055 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,055 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2020-12-09 20:46:18,055 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,055 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-09 20:46:18,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:46:18 BoogieIcfgContainer [2020-12-09 20:46:18,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:46:18,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:46:18,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:46:18,074 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:46:18,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:45:39" (3/4) ... [2020-12-09 20:46:18,077 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 20:46:18,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:46:18,077 INFO L168 Benchmark]: Toolchain (without parser) took 40004.58 ms. Allocated memory was 67.1 MB in the beginning and 104.9 MB in the end (delta: 37.7 MB). Free memory was 48.8 MB in the beginning and 76.7 MB in the end (delta: -27.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-12-09 20:46:18,078 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:46:18,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.09 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 48.6 MB in the beginning and 56.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2020-12-09 20:46:18,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 86.0 MB. Free memory was 56.4 MB in the beginning and 53.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:46:18,078 INFO L168 Benchmark]: Boogie Preprocessor took 32.01 ms. Allocated memory is still 86.0 MB. Free memory was 53.8 MB in the beginning and 51.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:46:18,078 INFO L168 Benchmark]: RCFGBuilder took 505.50 ms. Allocated memory is still 86.0 MB. Free memory was 51.7 MB in the beginning and 43.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:46:18,079 INFO L168 Benchmark]: TraceAbstraction took 38919.41 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 42.5 MB in the beginning and 76.7 MB in the end (delta: -34.2 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:46:18,079 INFO L168 Benchmark]: Witness Printer took 2.74 ms. Allocated memory is still 104.9 MB. Free memory is still 76.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:46:18,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 497.09 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 48.6 MB in the beginning and 56.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 86.0 MB. Free memory was 56.4 MB in the beginning and 53.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.01 ms. Allocated memory is still 86.0 MB. Free memory was 53.8 MB in the beginning and 51.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 505.50 ms. Allocated memory is still 86.0 MB. Free memory was 51.7 MB in the beginning and 43.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38919.41 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 42.5 MB in the beginning and 76.7 MB in the end (delta: -34.2 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * Witness Printer took 2.74 ms. Allocated memory is still 104.9 MB. Free memory is still 76.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 763]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 763. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={3:0}] [L758] struct ldv_kobject *kobj; [L740] struct ldv_kobject *kobj; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [ldv_global_msg_list={3:0}] [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L730] COND FALSE !(!kobj) [L723] COND FALSE !(!kobj) [L682] ((&kref->refcount)->counter) = (1) VAL [ldv_global_msg_list={3:0}] [L540] list->next = list VAL [ldv_global_msg_list={3:0}] [L541] list->prev = list VAL [ldv_global_msg_list={3:0}] [L746] return kobj; VAL [ldv_global_msg_list={3:0}] [L759] kobj = ldv_kobject_create() [L717] COND TRUE \read(*kobj) [L657] int temp; VAL [ldv_global_msg_list={3:0}] [L658] EXPR v->counter VAL [ldv_global_msg_list={3:0}] [L658] temp = v->counter [L659] temp += i VAL [ldv_global_msg_list={3:0}] [L660] v->counter = temp VAL [ldv_global_msg_list={3:0}] [L661] return temp; VAL [ldv_global_msg_list={3:0}] [L719] return kobj; VAL [ldv_global_msg_list={3:0}] [L711] COND TRUE \read(*kobj) [L665] int temp; VAL [ldv_global_msg_list={3:0}] [L666] EXPR v->counter VAL [ldv_global_msg_list={3:0}] [L666] temp = v->counter [L667] temp -= i VAL [ldv_global_msg_list={3:0}] [L668] v->counter = temp VAL [ldv_global_msg_list={3:0}] [L669] return temp; VAL [ldv_global_msg_list={3:0}] [L674] COND FALSE !((ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0)) [L678] return 0; VAL [ldv_global_msg_list={3:0}] [L690] return ldv_kref_sub(kref, 1, release); - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 25 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.8s, OverallIterations: 26, TraceHistogramMax: 16, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1667 SDtfs, 5018 SDslu, 2737 SDs, 0 SdLazy, 1946 SolverSat, 192 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2107 GetRequests, 1709 SyntacticMatches, 13 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2196 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 25 MinimizatonAttempts, 787 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 1285 NumberOfCodeBlocks, 1281 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 1999 ConstructedInterpolants, 0 QuantifiedInterpolants, 187170 SizeOfPredicates, 329 NumberOfNonLiveVariables, 6364 ConjunctsInSsa, 511 ConjunctsInUnsatCore, 86 InterpolantComputations, 22 PerfectInterpolantSequences, 50/618 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...