./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V --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 12544117846b274bd1cb12a6694f8fda1d77f0b1327b2e9a353cfe44563b100a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:44:47,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:44:47,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:44:47,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:44:47,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:44:47,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:44:47,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:44:47,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:44:47,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:44:47,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:44:47,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:44:47,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:44:47,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:44:47,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:44:47,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:44:48,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:44:48,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:44:48,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:44:48,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:44:48,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:44:48,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:44:48,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:44:48,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:44:48,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:44:48,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:44:48,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:44:48,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:44:48,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:44:48,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:44:48,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:44:48,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:44:48,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:44:48,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:44:48,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:44:48,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:44:48,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:44:48,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:44:48,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:44:48,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:44:48,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:44:48,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:44:48,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:44:48,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:44:48,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:44:48,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:44:48,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:44:48,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:44:48,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:44:48,110 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:44:48,110 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:44:48,110 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:44:48,111 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:44:48,112 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:44:48,112 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:44:48,113 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:44:48,113 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:44:48,113 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:44:48,114 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:44:48,114 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:44:48,114 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:44:48,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:44:48,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:44:48,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:44:48,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:44:48,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:44:48,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:44:48,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:44:48,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:44:48,119 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:44:48,119 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:44:48,119 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:44:48,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:44:48,120 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:44:48,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:44:48,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:44:48,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:44:48,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:44:48,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:44:48,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:44:48,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:44:48,122 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:44:48,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:44:48,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:44:48,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:44:48,123 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12544117846b274bd1cb12a6694f8fda1d77f0b1327b2e9a353cfe44563b100a [2021-11-23 02:44:48,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:44:48,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:44:48,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:44:48,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:44:48,510 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:44:48,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-11-23 02:44:48,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data/7275fc4da/8a395f652bd8464ea5c245b205d8a128/FLAGdc580766a [2021-11-23 02:44:49,348 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:44:49,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-11-23 02:44:49,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data/7275fc4da/8a395f652bd8464ea5c245b205d8a128/FLAGdc580766a [2021-11-23 02:44:49,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data/7275fc4da/8a395f652bd8464ea5c245b205d8a128 [2021-11-23 02:44:49,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:44:49,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:44:49,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:44:49,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:44:49,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:44:49,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:49" (1/1) ... [2021-11-23 02:44:49,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6622b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49, skipping insertion in model container [2021-11-23 02:44:49,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:49" (1/1) ... [2021-11-23 02:44:49,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:44:49,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:44:50,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:44:50,126 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 02:44:50,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1758e82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:50, skipping insertion in model container [2021-11-23 02:44:50,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:44:50,127 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 02:44:50,131 INFO L158 Benchmark]: Toolchain (without parser) took 540.41ms. Allocated memory is still 88.1MB. Free memory was 52.4MB in the beginning and 39.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:44:50,133 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 50.7MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:44:50,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.91ms. Allocated memory is still 88.1MB. Free memory was 52.2MB in the beginning and 39.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:44:50,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 50.7MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.91ms. Allocated memory is still 88.1MB. Free memory was 52.2MB in the beginning and 39.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V --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 12544117846b274bd1cb12a6694f8fda1d77f0b1327b2e9a353cfe44563b100a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:44:52,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:44:52,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:44:52,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:44:52,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:44:52,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:44:52,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:44:52,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:44:52,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:44:52,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:44:52,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:44:52,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:44:52,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:44:52,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:44:52,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:44:52,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:44:52,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:44:52,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:44:52,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:44:52,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:44:52,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:44:52,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:44:52,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:44:52,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:44:52,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:44:52,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:44:52,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:44:52,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:44:52,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:44:52,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:44:52,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:44:52,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:44:52,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:44:52,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:44:52,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:44:52,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:44:52,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:44:52,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:44:52,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:44:52,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:44:52,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:44:52,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 02:44:52,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:44:52,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:44:52,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:44:52,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:44:52,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:44:52,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:44:52,850 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:44:52,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:44:52,851 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:44:52,852 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:44:52,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:44:52,853 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:44:52,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:44:52,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:44:52,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:44:52,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:44:52,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:44:52,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:44:52,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:44:52,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:44:52,857 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:44:52,858 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:44:52,858 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:44:52,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:44:52,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:44:52,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:44:52,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:44:52,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:44:52,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:44:52,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:44:52,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:44:52,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:44:52,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:44:52,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:44:52,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:44:52,862 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:44:52,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:44:52,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:44:52,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:44:52,863 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12544117846b274bd1cb12a6694f8fda1d77f0b1327b2e9a353cfe44563b100a [2021-11-23 02:44:53,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:44:53,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:44:53,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:44:53,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:44:53,323 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:44:53,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-11-23 02:44:53,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data/dfdc7aa2a/82d6b005e0334be180525cf415ef9720/FLAGa652e6291 [2021-11-23 02:44:54,150 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:44:54,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-11-23 02:44:54,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data/dfdc7aa2a/82d6b005e0334be180525cf415ef9720/FLAGa652e6291 [2021-11-23 02:44:54,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/data/dfdc7aa2a/82d6b005e0334be180525cf415ef9720 [2021-11-23 02:44:54,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:44:54,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:44:54,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:44:54,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:44:54,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:44:54,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:54" (1/1) ... [2021-11-23 02:44:54,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cba5d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:54, skipping insertion in model container [2021-11-23 02:44:54,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:54" (1/1) ... [2021-11-23 02:44:54,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:44:54,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:44:55,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:44:55,065 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:44:55,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:44:55,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:44:55,191 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:44:55,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:44:55,313 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:44:55,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55 WrapperNode [2021-11-23 02:44:55,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:44:55,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:44:55,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:44:55,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:44:55,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,393 INFO L137 Inliner]: procedures = 165, calls = 72, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 49 [2021-11-23 02:44:55,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:44:55,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:44:55,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:44:55,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:44:55,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:44:55,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:44:55,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:44:55,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:44:55,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2021-11-23 02:44:55,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:44:55,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:55,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:44:55,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:44:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:44:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:44:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:44:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:44:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:44:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:44:55,640 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:44:55,642 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:44:55,875 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:44:55,882 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:44:55,882 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:44:55,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:55 BoogieIcfgContainer [2021-11-23 02:44:55,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:44:55,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:44:55,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:44:55,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:44:55,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:54" (1/3) ... [2021-11-23 02:44:55,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f0a68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:55, skipping insertion in model container [2021-11-23 02:44:55,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (2/3) ... [2021-11-23 02:44:55,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f0a68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:55, skipping insertion in model container [2021-11-23 02:44:55,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:55" (3/3) ... [2021-11-23 02:44:55,894 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test18_1.i [2021-11-23 02:44:55,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:44:55,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 02:44:55,949 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:44:55,956 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:44:55,956 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 02:44:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:44:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:44:55,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:55,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:55,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:44:55,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:55,987 INFO L85 PathProgramCache]: Analyzing trace with hash 882041385, now seen corresponding path program 1 times [2021-11-23 02:44:55,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:44:55,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901416525] [2021-11-23 02:44:56,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:56,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:44:56,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:44:56,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:44:56,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:44:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:56,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:44:56,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:56,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:56,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:44:56,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901416525] [2021-11-23 02:44:56,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901416525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:44:56,340 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:44:56,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 02:44:56,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775445435] [2021-11-23 02:44:56,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:44:56,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:44:56,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:44:56,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:44:56,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:44:56,392 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:44:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:56,566 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2021-11-23 02:44:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:44:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-23 02:44:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:56,592 INFO L225 Difference]: With dead ends: 63 [2021-11-23 02:44:56,593 INFO L226 Difference]: Without dead ends: 59 [2021-11-23 02:44:56,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:44:56,613 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:56,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 134 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:44:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-23 02:44:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 36. [2021-11-23 02:44:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:44:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-11-23 02:44:56,681 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2021-11-23 02:44:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:56,682 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-11-23 02:44:56,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:44:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-11-23 02:44:56,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:44:56,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:56,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:56,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:56,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:44:56,898 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:44:56,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1769545066, now seen corresponding path program 1 times [2021-11-23 02:44:56,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:44:56,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032384671] [2021-11-23 02:44:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:56,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:44:56,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:44:56,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:44:56,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:44:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:56,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:44:56,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:57,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:57,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:44:57,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032384671] [2021-11-23 02:44:57,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032384671] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:44:57,140 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:44:57,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:44:57,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334292630] [2021-11-23 02:44:57,142 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:44:57,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:44:57,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:44:57,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:44:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:44:57,148 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:44:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:57,271 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2021-11-23 02:44:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:44:57,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-23 02:44:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:57,274 INFO L225 Difference]: With dead ends: 57 [2021-11-23 02:44:57,274 INFO L226 Difference]: Without dead ends: 55 [2021-11-23 02:44:57,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:44:57,276 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:57,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 123 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:44:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-23 02:44:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2021-11-23 02:44:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 38 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 02:44:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2021-11-23 02:44:57,285 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 11 [2021-11-23 02:44:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:57,286 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2021-11-23 02:44:57,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:44:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2021-11-23 02:44:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:44:57,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:57,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:57,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:57,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:44:57,500 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:44:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1533786013, now seen corresponding path program 1 times [2021-11-23 02:44:57,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:44:57,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437941815] [2021-11-23 02:44:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:57,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:44:57,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:44:57,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:44:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:44:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:57,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:44:57,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:57,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:57,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:44:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437941815] [2021-11-23 02:44:57,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437941815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:44:57,751 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:44:57,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:44:57,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428752664] [2021-11-23 02:44:57,752 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:44:57,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:44:57,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:44:57,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:44:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:44:57,754 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:44:57,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:57,861 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2021-11-23 02:44:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:44:57,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2021-11-23 02:44:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:57,868 INFO L225 Difference]: With dead ends: 94 [2021-11-23 02:44:57,869 INFO L226 Difference]: Without dead ends: 94 [2021-11-23 02:44:57,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:44:57,874 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 192 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:57,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 77 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:44:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-23 02:44:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 58. [2021-11-23 02:44:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 50 states have internal predecessors, (64), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-23 02:44:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2021-11-23 02:44:57,896 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 13 [2021-11-23 02:44:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:57,898 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2021-11-23 02:44:57,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:44:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2021-11-23 02:44:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:44:57,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:57,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:57,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:58,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:44:58,113 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:44:58,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash 447225726, now seen corresponding path program 1 times [2021-11-23 02:44:58,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:44:58,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111653215] [2021-11-23 02:44:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:58,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:44:58,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:44:58,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:44:58,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:44:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:58,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:44:58,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:58,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:44:58,394 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:44:58,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-23 02:44:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:58,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:45:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:45:09,569 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:45:09,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111653215] [2021-11-23 02:45:09,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111653215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:45:09,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [10662906] [2021-11-23 02:45:09,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:09,570 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:45:09,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:45:09,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:45:09,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-23 02:45:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:09,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:45:09,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:45:09,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:45:09,809 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:45:09,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 02:45:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:45:09,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:45:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:45:16,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [10662906] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:45:16,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839168526] [2021-11-23 02:45:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:16,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:45:16,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:45:16,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:45:16,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:45:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:16,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:45:16,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:45:16,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:45:16,700 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:45:16,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-11-23 02:45:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:45:16,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:45:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:45:24,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839168526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:45:24,195 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:45:24,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2021-11-23 02:45:24,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531667999] [2021-11-23 02:45:24,196 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:45:24,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:45:24,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:45:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:45:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=119, Unknown=5, NotChecked=0, Total=156 [2021-11-23 02:45:24,199 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:45:24,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:24,277 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2021-11-23 02:45:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:45:24,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2021-11-23 02:45:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:24,280 INFO L225 Difference]: With dead ends: 80 [2021-11-23 02:45:24,280 INFO L226 Difference]: Without dead ends: 80 [2021-11-23 02:45:24,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=39, Invalid=138, Unknown=5, NotChecked=0, Total=182 [2021-11-23 02:45:24,282 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 24 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:24,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 205 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 78 Unchecked, 0.1s Time] [2021-11-23 02:45:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-23 02:45:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 65. [2021-11-23 02:45:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 49 states have (on average 1.489795918367347) internal successors, (73), 55 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-23 02:45:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2021-11-23 02:45:24,294 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 18 [2021-11-23 02:45:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:24,295 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2021-11-23 02:45:24,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:45:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2021-11-23 02:45:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:45:24,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:24,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:24,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:45:24,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:45:24,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:45:24,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:45:24,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:45:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash 447225727, now seen corresponding path program 1 times [2021-11-23 02:45:24,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:45:24,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738032628] [2021-11-23 02:45:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:24,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:45:24,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:45:24,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:45:24,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:45:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:24,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:45:24,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:45:24,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:45:25,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:45:27,346 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:45:27,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-11-23 02:45:27,360 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:45:27,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2021-11-23 02:45:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:45:27,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:45:42,848 INFO L388 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 32 treesize of output 30 [2021-11-23 02:45:43,444 INFO L388 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 29 treesize of output 27 [2021-11-23 02:45:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:45:43,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:45:43,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738032628] [2021-11-23 02:45:43,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738032628] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:45:43,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306427990] [2021-11-23 02:45:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:43,594 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:45:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:45:43,610 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:45:43,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-23 02:45:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:43,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:45:43,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:45:43,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:45:43,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:45:43,970 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:45:43,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:45:43,984 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:45:43,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-23 02:45:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:45:44,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:02,817 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (or (and (let ((.cse0 (bvmul |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_4| (_ bv4 32)))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_4| .cse0) (bvadd |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_4| .cse0 (_ bv4 32)))) (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_4| (bvmul |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_4| (_ bv4 32)) (_ bv4 32)) (select (store |c_#length| |v_ldv_malloc_#res.base_49| ldv_malloc_~size) |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_10|)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_49|)))) (exists ((|v_ldv_malloc_#res.base_40| (_ BitVec 32))) (and (or (exists ((v_ldv_malloc_~size_36 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_4| (bvmul |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_4| (_ bv4 32)) (_ bv4 32)) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_40| v_ldv_malloc_~size_36) |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_10|)))) (not (let ((.cse1 (bvmul |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_4| (_ bv4 32)))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_4| .cse1) (bvadd |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_4| .cse1 (_ bv4 32)))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_40|)))))))))) is different from false [2021-11-23 02:46:05,333 INFO L388 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 30 treesize of output 28 [2021-11-23 02:46:05,867 INFO L388 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 28 treesize of output 26 [2021-11-23 02:46:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:46:05,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1306427990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:46:05,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258986084] [2021-11-23 02:46:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:05,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:46:05,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:46:05,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:46:05,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 02:46:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:05,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:46:05,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:46:05,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:46:05,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:46:06,240 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:46:06,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:46:06,257 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:46:06,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-23 02:46:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:06,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:44,635 INFO L388 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 30 treesize of output 28 [2021-11-23 02:46:45,222 INFO L388 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 31 treesize of output 29 [2021-11-23 02:46:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:45,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258986084] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:46:45,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:46:45,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 21 [2021-11-23 02:46:45,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440154681] [2021-11-23 02:46:45,255 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:46:45,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 02:46:45,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:46:45,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 02:46:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=343, Unknown=27, NotChecked=38, Total=462 [2021-11-23 02:46:45,258 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 22 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 4 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 02:46:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:56,065 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2021-11-23 02:46:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:46:56,067 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 4 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 18 [2021-11-23 02:46:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:56,068 INFO L225 Difference]: With dead ends: 160 [2021-11-23 02:46:56,069 INFO L226 Difference]: Without dead ends: 160 [2021-11-23 02:46:56,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 77 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 69.0s TimeCoverageRelationStatistics Valid=106, Invalid=623, Unknown=31, NotChecked=52, Total=812 [2021-11-23 02:46:56,070 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 123 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:56,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 525 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 174 Invalid, 0 Unknown, 337 Unchecked, 0.9s Time] [2021-11-23 02:46:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-23 02:46:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 91. [2021-11-23 02:46:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 77 states have internal predecessors, (103), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-23 02:46:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 124 transitions. [2021-11-23 02:46:56,089 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 124 transitions. Word has length 18 [2021-11-23 02:46:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:56,089 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 124 transitions. [2021-11-23 02:46:56,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 4 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 02:46:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 124 transitions. [2021-11-23 02:46:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:46:56,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:56,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:56,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:46:56,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:46:56,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-23 02:46:56,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:46:56,698 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:46:56,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash -58332899, now seen corresponding path program 1 times [2021-11-23 02:46:56,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:46:56,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503381763] [2021-11-23 02:46:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:56,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:46:56,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:46:56,700 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:46:56,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 02:46:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:56,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:46:56,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:46:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:56,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:46:56,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:46:56,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503381763] [2021-11-23 02:46:56,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503381763] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:46:56,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:46:56,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-23 02:46:56,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516915515] [2021-11-23 02:46:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:56,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:56,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:46:56,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:56,995 INFO L87 Difference]: Start difference. First operand 91 states and 124 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:46:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:57,067 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2021-11-23 02:46:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-23 02:46:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:57,070 INFO L225 Difference]: With dead ends: 73 [2021-11-23 02:46:57,070 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 02:46:57,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:57,072 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:57,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 02:46:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-23 02:46:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 61 states have internal predecessors, (75), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-23 02:46:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2021-11-23 02:46:57,083 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 18 [2021-11-23 02:46:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:57,084 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2021-11-23 02:46:57,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:46:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2021-11-23 02:46:57,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:46:57,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:57,086 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:57,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:46:57,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:46:57,286 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:46:57,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash 287141737, now seen corresponding path program 1 times [2021-11-23 02:46:57,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:46:57,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326779505] [2021-11-23 02:46:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:57,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:46:57,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:46:57,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:46:57,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:46:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:57,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:46:57,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:46:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:46:57,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:46:57,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:46:57,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326779505] [2021-11-23 02:46:57,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326779505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:57,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:57,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 02:46:57,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857615676] [2021-11-23 02:46:57,479 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:57,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:57,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:46:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:57,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:57,481 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:46:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:57,555 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2021-11-23 02:46:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:46:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-23 02:46:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:57,557 INFO L225 Difference]: With dead ends: 96 [2021-11-23 02:46:57,557 INFO L226 Difference]: Without dead ends: 96 [2021-11-23 02:46:57,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:46:57,559 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 22 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:57,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 181 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-23 02:46:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 73. [2021-11-23 02:46:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 62 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-23 02:46:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2021-11-23 02:46:57,570 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 20 [2021-11-23 02:46:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:57,570 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2021-11-23 02:46:57,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:46:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2021-11-23 02:46:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:46:57,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:57,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:57,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:46:57,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:46:57,790 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:46:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2029952073, now seen corresponding path program 1 times [2021-11-23 02:46:57,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:46:57,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530552309] [2021-11-23 02:46:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:57,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:46:57,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:46:57,791 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:46:57,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 02:46:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:57,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:46:57,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:46:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:46:57,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:46:58,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:46:58,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530552309] [2021-11-23 02:46:58,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530552309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:58,014 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:58,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:46:58,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557442172] [2021-11-23 02:46:58,015 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:58,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:46:58,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:46:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:46:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:46:58,017 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:46:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:58,145 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2021-11-23 02:46:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:58,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-11-23 02:46:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:58,147 INFO L225 Difference]: With dead ends: 75 [2021-11-23 02:46:58,147 INFO L226 Difference]: Without dead ends: 75 [2021-11-23 02:46:58,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:46:58,148 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 20 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:58,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 85 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:58,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-23 02:46:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-11-23 02:46:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 61 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-23 02:46:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-11-23 02:46:58,164 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 20 [2021-11-23 02:46:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:58,164 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-11-23 02:46:58,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:46:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-11-23 02:46:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:46:58,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:58,166 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:58,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 02:46:58,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:46:58,388 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-11-23 02:46:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1495996631, now seen corresponding path program 1 times [2021-11-23 02:46:58,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:46:58,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411572480] [2021-11-23 02:46:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:58,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:46:58,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:46:58,391 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:46:58,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:46:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:46:58,444 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:46:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:46:58,491 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 02:46:58,491 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:46:58,492 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2021-11-23 02:46:58,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (6 of 8 remaining) [2021-11-23 02:46:58,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (5 of 8 remaining) [2021-11-23 02:46:58,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 8 remaining) [2021-11-23 02:46:58,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (3 of 8 remaining) [2021-11-23 02:46:58,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 8 remaining) [2021-11-23 02:46:58,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (1 of 8 remaining) [2021-11-23 02:46:58,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (0 of 8 remaining) [2021-11-23 02:46:58,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 02:46:58,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:46:58,698 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:58,701 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:46:58,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:46:58 BoogieIcfgContainer [2021-11-23 02:46:58,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:46:58,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:46:58,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:46:58,743 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:46:58,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:55" (3/4) ... [2021-11-23 02:46:58,746 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:46:58,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:46:58,747 INFO L158 Benchmark]: Toolchain (without parser) took 124345.87ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 29.0MB in the beginning and 50.0MB in the end (delta: -21.0MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-11-23 02:46:58,749 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 34.3MB in the beginning and 34.3MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:46:58,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 910.49ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 45.6MB in the end (delta: -16.9MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-11-23 02:46:58,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.87ms. Allocated memory is still 69.2MB. Free memory was 45.4MB in the beginning and 43.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:46:58,754 INFO L158 Benchmark]: Boogie Preprocessor took 34.65ms. Allocated memory is still 69.2MB. Free memory was 43.2MB in the beginning and 41.7MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:46:58,754 INFO L158 Benchmark]: RCFGBuilder took 455.42ms. Allocated memory is still 69.2MB. Free memory was 41.7MB in the beginning and 42.4MB in the end (delta: -706.4kB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-11-23 02:46:58,754 INFO L158 Benchmark]: TraceAbstraction took 122855.16ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 42.0MB in the beginning and 50.0MB in the end (delta: -8.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-23 02:46:58,755 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 83.9MB. Free memory is still 50.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:46:58,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 34.3MB in the beginning and 34.3MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 910.49ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 45.6MB in the end (delta: -16.9MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.87ms. Allocated memory is still 69.2MB. Free memory was 45.4MB in the beginning and 43.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.65ms. Allocated memory is still 69.2MB. Free memory was 43.2MB in the beginning and 41.7MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 455.42ms. Allocated memory is still 69.2MB. Free memory was 41.7MB in the beginning and 42.4MB in the end (delta: -706.4kB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * TraceAbstraction took 122855.16ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 42.0MB in the beginning and 50.0MB in the end (delta: -8.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 83.9MB. Free memory is still 50.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 778]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 778. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L779] CALL entry_point() [L761] int len = 10; VAL [ldv_global_msg_list={1:0}, len=10] [L762] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) VAL [\old(size)=40, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] RET, EXPR ldv_malloc(sizeof(struct A18*)*len) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct A18*)*len)={2:0}, len=10] [L762] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L763] struct A18 *p; [L764] int i=0; [L765] int j; VAL [array={2:0}, i=0, ldv_global_msg_list={1:0}, len=10] [L766] COND FALSE !(!array) VAL [array={2:0}, i=0, ldv_global_msg_list={1:0}, len=10] [L767] COND TRUE i=0) VAL [array={2:0}, i=0, j=4294967295, ldv_global_msg_list={1:0}, len=10, p={0:0}] [L779] RET entry_point() - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 122.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 437 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 429 mSDsluCounter, 1471 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 415 IncrementalHoareTripleChecker+Unchecked, 1153 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 318 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 315 SyntacticMatches, 17 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 93.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 180 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 107.1s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 378 ConstructedInterpolants, 84 QuantifiedInterpolants, 4362 SizeOfPredicates, 32 NumberOfNonLiveVariables, 637 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 24 InterpolantComputations, 11 PerfectInterpolantSequences, 40/72 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 [2021-11-23 02:46:58,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758a0aba-df20-4384-9fa8-d5fbb5d55e0b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample