./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.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_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/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_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/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_cd77bd1e-9106-4da3-91f8-7151bf824db1/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 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:41:23,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:41:23,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:41:23,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:41:23,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:41:23,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:41:23,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:41:23,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:41:23,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:41:23,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:41:23,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:41:23,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:41:23,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:41:23,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:41:23,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:41:23,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:41:23,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:41:23,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:41:23,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:41:23,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:41:23,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:41:23,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:41:23,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:41:23,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:41:23,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:41:23,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:41:23,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:41:23,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:41:23,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:41:23,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:41:23,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:41:23,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:41:23,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:41:23,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:41:23,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:41:23,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:41:23,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:41:23,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:41:23,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:41:23,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:41:23,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:41:23,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:41:24,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:41:24,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:41:24,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:41:24,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:41:24,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:41:24,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:41:24,013 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:41:24,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:41:24,013 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:41:24,014 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:41:24,014 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:41:24,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:41:24,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:41:24,015 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:41:24,015 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:41:24,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:41:24,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:41:24,016 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:41:24,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:41:24,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:41:24,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:41:24,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:41:24,018 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:41:24,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:41:24,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:41:24,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:41:24,019 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:41:24,019 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:41:24,019 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:41:24,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:41:24,020 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:41:24,020 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:41:24,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:41:24,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:41:24,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:41:24,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:24,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:41:24,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:41:24,022 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:41:24,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:41:24,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:41:24,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:41:24,022 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_cd77bd1e-9106-4da3-91f8-7151bf824db1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2021-11-23 02:41:24,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:41:24,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:41:24,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:41:24,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:41:24,426 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:41:24,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-11-23 02:41:24,509 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data/0e671fd1b/240bf8897f0d467c95baac55c47d5251/FLAGc15eaf320 [2021-11-23 02:41:25,259 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:41:25,260 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-11-23 02:41:25,299 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data/0e671fd1b/240bf8897f0d467c95baac55c47d5251/FLAGc15eaf320 [2021-11-23 02:41:25,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data/0e671fd1b/240bf8897f0d467c95baac55c47d5251 [2021-11-23 02:41:25,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:41:25,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:41:25,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:25,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:41:25,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:41:25,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:25" (1/1) ... [2021-11-23 02:41:25,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500f45c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:25, skipping insertion in model container [2021-11-23 02:41:25,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:25" (1/1) ... [2021-11-23 02:41:25,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:41:25,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:41:26,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-11-23 02:41:26,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-11-23 02:41:26,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-11-23 02:41:26,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-11-23 02:41:26,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:26,602 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 02:41:26,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6bfcf9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:26, skipping insertion in model container [2021-11-23 02:41:26,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:26,604 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 02:41:26,607 INFO L158 Benchmark]: Toolchain (without parser) took 1208.27ms. Allocated memory is still 98.6MB. Free memory was 54.7MB in the beginning and 60.3MB in the end (delta: -5.6MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-23 02:41:26,607 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:41:26,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1202.90ms. Allocated memory is still 98.6MB. Free memory was 54.5MB in the beginning and 60.3MB in the end (delta: -5.8MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-23 02:41:26,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1202.90ms. Allocated memory is still 98.6MB. Free memory was 54.5MB in the beginning and 60.3MB in the end (delta: -5.8MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/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_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/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_cd77bd1e-9106-4da3-91f8-7151bf824db1/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 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:41:29,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:41:29,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:41:29,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:41:29,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:41:29,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:41:29,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:41:29,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:41:29,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:41:29,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:41:29,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:41:29,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:41:29,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:41:29,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:41:29,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:41:29,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:41:29,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:41:29,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:41:29,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:41:29,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:41:29,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:41:29,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:41:29,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:41:29,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:41:29,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:41:29,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:41:29,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:41:29,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:41:29,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:41:29,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:41:29,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:41:29,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:41:29,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:41:29,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:41:29,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:41:29,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:41:29,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:41:29,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:41:29,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:41:29,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:41:29,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:41:29,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 02:41:29,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:41:29,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:41:29,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:41:29,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:41:29,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:41:29,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:41:29,632 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:41:29,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:41:29,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:41:29,633 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:41:29,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:41:29,635 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:41:29,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:41:29,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:41:29,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:41:29,638 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:41:29,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:41:29,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:41:29,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:41:29,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:41:29,639 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:41:29,640 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:41:29,640 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:41:29,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:41:29,640 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:41:29,641 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:41:29,641 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:41:29,641 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:41:29,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:41:29,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:41:29,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:41:29,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:41:29,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:29,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:41:29,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:41:29,644 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:41:29,644 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:41:29,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:41:29,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:41:29,645 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_cd77bd1e-9106-4da3-91f8-7151bf824db1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2021-11-23 02:41:30,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:41:30,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:41:30,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:41:30,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:41:30,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:41:30,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-11-23 02:41:30,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data/44ee5ca85/bfea52deff07411ea80ed88151b2eee6/FLAG656bc9579 [2021-11-23 02:41:31,244 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:41:31,245 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-11-23 02:41:31,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data/44ee5ca85/bfea52deff07411ea80ed88151b2eee6/FLAG656bc9579 [2021-11-23 02:41:31,322 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/data/44ee5ca85/bfea52deff07411ea80ed88151b2eee6 [2021-11-23 02:41:31,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:41:31,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:41:31,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:31,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:41:31,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:41:31,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:31" (1/1) ... [2021-11-23 02:41:31,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479e8923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:31, skipping insertion in model container [2021-11-23 02:41:31,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:31" (1/1) ... [2021-11-23 02:41:31,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:41:31,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:41:32,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-11-23 02:41:32,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-11-23 02:41:32,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-11-23 02:41:32,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-11-23 02:41:32,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:32,614 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:41:32,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:41:32,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-11-23 02:41:32,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-11-23 02:41:32,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-11-23 02:41:32,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-11-23 02:41:32,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:32,787 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:41:32,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-11-23 02:41:32,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-11-23 02:41:32,926 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-11-23 02:41:32,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-11-23 02:41:32,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:33,033 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:41:33,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33 WrapperNode [2021-11-23 02:41:33,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:33,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:41:33,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:41:33,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:41:33,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,214 INFO L137 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1204 [2021-11-23 02:41:33,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:41:33,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:41:33,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:41:33,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:41:33,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:41:33,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:41:33,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:41:33,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:41:33,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (1/1) ... [2021-11-23 02:41:33,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:33,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:33,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:41:33,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:41:33,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 02:41:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:41:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:41:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:41:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:41:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:41:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:41:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:41:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-23 02:41:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-23 02:41:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:41:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:41:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:41:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:41:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-23 02:41:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-23 02:41:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:41:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-23 02:41:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-23 02:41:33,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:41:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:41:34,008 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:41:34,010 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:41:40,781 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:41:40,813 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:41:40,817 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-23 02:41:40,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:40 BoogieIcfgContainer [2021-11-23 02:41:40,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:41:40,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:41:40,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:41:40,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:41:40,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:41:31" (1/3) ... [2021-11-23 02:41:40,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf39b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:40, skipping insertion in model container [2021-11-23 02:41:40,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:33" (2/3) ... [2021-11-23 02:41:40,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf39b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:40, skipping insertion in model container [2021-11-23 02:41:40,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:40" (3/3) ... [2021-11-23 02:41:40,843 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-2.i [2021-11-23 02:41:40,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:41:40,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2021-11-23 02:41:40,920 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:41:40,929 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 02:41:40,929 INFO L340 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2021-11-23 02:41:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 02:41:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:41:40,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:40,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:41:40,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:41:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2021-11-23 02:41:41,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:41:41,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533717875] [2021-11-23 02:41:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:41,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:41:41,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:41:41,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:41:41,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:41:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:41,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:41:41,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:41,383 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 02:41:41,395 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 02:41:41,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:41,415 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 02:41:41,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:41:41,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533717875] [2021-11-23 02:41:41,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533717875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:41,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:41,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:41:41,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210262338] [2021-11-23 02:41:41,421 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:41,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:41,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:41:41,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:41,512 INFO L87 Difference]: Start difference. First operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:45,121 INFO L93 Difference]: Finished difference Result 1537 states and 1627 transitions. [2021-11-23 02:41:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:41:45,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 02:41:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:45,166 INFO L225 Difference]: With dead ends: 1537 [2021-11-23 02:41:45,166 INFO L226 Difference]: Without dead ends: 1535 [2021-11-23 02:41:45,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:45,178 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 906 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:45,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 1258 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 02:41:45,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-11-23 02:41:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1300. [2021-11-23 02:41:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 660 states have (on average 2.106060606060606) internal successors, (1390), 1281 states have internal predecessors, (1390), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:41:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1420 transitions. [2021-11-23 02:41:45,383 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1420 transitions. Word has length 3 [2021-11-23 02:41:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:45,384 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 1420 transitions. [2021-11-23 02:41:45,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1420 transitions. [2021-11-23 02:41:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:41:45,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:45,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:41:45,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:45,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:41:45,600 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:41:45,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:45,601 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2021-11-23 02:41:45,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:41:45,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271633030] [2021-11-23 02:41:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:45,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:41:45,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:41:45,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:41:45,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:41:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:45,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:41:45,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:45,834 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 02:41:45,848 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 02:41:45,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:45,914 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 02:41:45,915 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:41:45,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271633030] [2021-11-23 02:41:45,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271633030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:45,916 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:45,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 02:41:45,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371961885] [2021-11-23 02:41:45,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:45,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:45,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:41:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:45,919 INFO L87 Difference]: Start difference. First operand 1300 states and 1420 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:52,190 INFO L93 Difference]: Finished difference Result 1927 states and 2053 transitions. [2021-11-23 02:41:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:52,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 02:41:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:52,205 INFO L225 Difference]: With dead ends: 1927 [2021-11-23 02:41:52,205 INFO L226 Difference]: Without dead ends: 1927 [2021-11-23 02:41:52,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:52,207 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 2160 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:52,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2174 Valid, 1653 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 02:41:52,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2021-11-23 02:41:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1296. [2021-11-23 02:41:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 665 states have (on average 2.0842105263157893) internal successors, (1386), 1277 states have internal predecessors, (1386), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:41:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1416 transitions. [2021-11-23 02:41:52,261 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1416 transitions. Word has length 3 [2021-11-23 02:41:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:52,261 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 1416 transitions. [2021-11-23 02:41:52,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1416 transitions. [2021-11-23 02:41:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:41:52,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:52,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:52,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:52,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:41:52,482 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:41:52,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2021-11-23 02:41:52,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:41:52,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584856112] [2021-11-23 02:41:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:52,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:41:52,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:41:52,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:41:52,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:41:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:52,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:41:52,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:52,715 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 02:41:52,751 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 02:41:52,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:52,800 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 02:41:52,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:41:52,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584856112] [2021-11-23 02:41:52,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584856112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:52,801 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:52,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:41:52,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528117997] [2021-11-23 02:41:52,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:52,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:52,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:41:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:52,804 INFO L87 Difference]: Start difference. First operand 1296 states and 1416 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:58,387 INFO L93 Difference]: Finished difference Result 2252 states and 2407 transitions. [2021-11-23 02:41:58,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:41:58,389 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 02:41:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:58,404 INFO L225 Difference]: With dead ends: 2252 [2021-11-23 02:41:58,404 INFO L226 Difference]: Without dead ends: 2252 [2021-11-23 02:41:58,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:58,406 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 2320 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:58,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2326 Valid, 2554 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 02:41:58,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-23 02:41:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1251. [2021-11-23 02:41:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 665 states have (on average 2.01203007518797) internal successors, (1338), 1232 states have internal predecessors, (1338), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:41:58,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1368 transitions. [2021-11-23 02:41:58,458 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1368 transitions. Word has length 9 [2021-11-23 02:41:58,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:58,459 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1368 transitions. [2021-11-23 02:41:58,459 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1368 transitions. [2021-11-23 02:41:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:41:58,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:58,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:58,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:58,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:41:58,676 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:41:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2021-11-23 02:41:58,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:41:58,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918696237] [2021-11-23 02:41:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:58,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:41:58,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:41:58,679 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:41:58,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:41:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:58,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:41:58,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:58,855 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 02:41:58,929 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 02:41:58,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:59,093 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 02:41:59,093 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:41:59,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918696237] [2021-11-23 02:41:59,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918696237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:59,094 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:59,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:41:59,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178330112] [2021-11-23 02:41:59,094 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:59,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:41:59,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:41:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:41:59,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:41:59,096 INFO L87 Difference]: Start difference. First operand 1251 states and 1368 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:10,058 INFO L93 Difference]: Finished difference Result 1880 states and 2007 transitions. [2021-11-23 02:42:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 02:42:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:10,072 INFO L225 Difference]: With dead ends: 1880 [2021-11-23 02:42:10,073 INFO L226 Difference]: Without dead ends: 1880 [2021-11-23 02:42:10,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:10,075 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 2462 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:10,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2467 Valid, 3352 Invalid, 2315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2021-11-23 02:42:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-11-23 02:42:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1241. [2021-11-23 02:42:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 665 states have (on average 1.9924812030075187) internal successors, (1325), 1222 states have internal predecessors, (1325), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:42:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1355 transitions. [2021-11-23 02:42:10,120 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1355 transitions. Word has length 9 [2021-11-23 02:42:10,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:10,120 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1355 transitions. [2021-11-23 02:42:10,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:10,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1355 transitions. [2021-11-23 02:42:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:42:10,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:10,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:10,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:10,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:10,345 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2021-11-23 02:42:10,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:10,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673044387] [2021-11-23 02:42:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:10,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:10,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:10,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:10,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:42:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:10,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:42:10,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:10,622 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 02:42:10,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:10,707 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 02:42:10,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:10,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673044387] [2021-11-23 02:42:10,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673044387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:10,709 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:10,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:42:10,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234526796] [2021-11-23 02:42:10,709 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:10,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:10,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:10,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:10,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:10,712 INFO L87 Difference]: Start difference. First operand 1241 states and 1355 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:11,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:11,889 INFO L93 Difference]: Finished difference Result 1885 states and 2048 transitions. [2021-11-23 02:42:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:11,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:42:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:11,901 INFO L225 Difference]: With dead ends: 1885 [2021-11-23 02:42:11,902 INFO L226 Difference]: Without dead ends: 1885 [2021-11-23 02:42:11,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:11,903 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 745 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:11,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3832 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:42:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-11-23 02:42:11,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1487. [2021-11-23 02:42:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 908 states have (on average 1.9625550660792952) internal successors, (1782), 1465 states have internal predecessors, (1782), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:42:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1818 transitions. [2021-11-23 02:42:11,952 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1818 transitions. Word has length 11 [2021-11-23 02:42:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:11,952 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 1818 transitions. [2021-11-23 02:42:11,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1818 transitions. [2021-11-23 02:42:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:42:11,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:11,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:11,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:12,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:12,167 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:12,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2126591358, now seen corresponding path program 1 times [2021-11-23 02:42:12,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:12,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982031222] [2021-11-23 02:42:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:12,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:12,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:12,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:12,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:42:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:12,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:42:12,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:12,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:42:12,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:42:12,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:42:12,497 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 02:42:12,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-23 02:42:12,580 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 02:42:12,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-23 02:42:12,621 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 02:42:12,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:12,701 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 02:42:12,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:12,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982031222] [2021-11-23 02:42:12,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982031222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:12,705 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:12,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:42:12,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518962342] [2021-11-23 02:42:12,706 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:12,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:42:12,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:42:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:42:12,707 INFO L87 Difference]: Start difference. First operand 1487 states and 1818 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:14,709 INFO L93 Difference]: Finished difference Result 1989 states and 2394 transitions. [2021-11-23 02:42:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 02:42:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:14,723 INFO L225 Difference]: With dead ends: 1989 [2021-11-23 02:42:14,723 INFO L226 Difference]: Without dead ends: 1989 [2021-11-23 02:42:14,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 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 02:42:14,725 INFO L933 BasicCegarLoop]: 1252 mSDtfsCounter, 996 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:14,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 3592 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 02:42:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2021-11-23 02:42:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1486. [2021-11-23 02:42:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 907 states have (on average 1.9625137816979052) internal successors, (1780), 1464 states have internal predecessors, (1780), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:42:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1816 transitions. [2021-11-23 02:42:14,787 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1816 transitions. Word has length 14 [2021-11-23 02:42:14,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:14,788 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 1816 transitions. [2021-11-23 02:42:14,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1816 transitions. [2021-11-23 02:42:14,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:42:14,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:14,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:14,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:15,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:15,030 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2021-11-23 02:42:15,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:15,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304399697] [2021-11-23 02:42:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:15,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:15,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:15,033 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:15,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:42:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:15,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:42:15,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:15,280 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 02:42:15,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:15,311 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 02:42:15,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:15,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304399697] [2021-11-23 02:42:15,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304399697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:15,312 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:15,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:42:15,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333944386] [2021-11-23 02:42:15,312 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:15,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:15,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:15,313 INFO L87 Difference]: Start difference. First operand 1486 states and 1816 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:15,358 INFO L93 Difference]: Finished difference Result 1426 states and 1730 transitions. [2021-11-23 02:42:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:15,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 02:42:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:15,368 INFO L225 Difference]: With dead ends: 1426 [2021-11-23 02:42:15,368 INFO L226 Difference]: Without dead ends: 1426 [2021-11-23 02:42:15,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:15,370 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 1157 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:15,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1369 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:42:15,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-11-23 02:42:15,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2021-11-23 02:42:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 871 states have (on average 1.9448909299655568) internal successors, (1694), 1404 states have internal predecessors, (1694), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:42:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1730 transitions. [2021-11-23 02:42:15,409 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1730 transitions. Word has length 19 [2021-11-23 02:42:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:15,410 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 1730 transitions. [2021-11-23 02:42:15,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1730 transitions. [2021-11-23 02:42:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:42:15,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:15,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:15,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:15,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:15,626 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2021-11-23 02:42:15,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:15,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295082186] [2021-11-23 02:42:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:15,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:15,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:15,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:15,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:42:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:15,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:42:15,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:15,895 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 02:42:15,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:15,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:15,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295082186] [2021-11-23 02:42:15,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295082186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:15,943 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:15,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 02:42:15,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077818412] [2021-11-23 02:42:15,943 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:15,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:15,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:15,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:15,945 INFO L87 Difference]: Start difference. First operand 1426 states and 1730 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:16,048 INFO L93 Difference]: Finished difference Result 1398 states and 1674 transitions. [2021-11-23 02:42:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:16,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 02:42:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:16,056 INFO L225 Difference]: With dead ends: 1398 [2021-11-23 02:42:16,056 INFO L226 Difference]: Without dead ends: 1398 [2021-11-23 02:42:16,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:42:16,057 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 1128 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:16,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2503 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:16,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-11-23 02:42:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1396. [2021-11-23 02:42:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 855 states have (on average 1.9134502923976608) internal successors, (1636), 1374 states have internal predecessors, (1636), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:42:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1672 transitions. [2021-11-23 02:42:16,098 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1672 transitions. Word has length 21 [2021-11-23 02:42:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:16,099 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1672 transitions. [2021-11-23 02:42:16,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1672 transitions. [2021-11-23 02:42:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 02:42:16,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:16,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:16,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:16,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:16,316 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:16,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:16,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2021-11-23 02:42:16,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:16,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853004709] [2021-11-23 02:42:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:16,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:16,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:16,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 02:42:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:16,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:42:16,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:16,505 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 02:42:16,668 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 02:42:16,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:16,813 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 02:42:16,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:16,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853004709] [2021-11-23 02:42:16,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853004709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:16,814 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:16,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:42:16,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999954849] [2021-11-23 02:42:16,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:16,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:16,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:16,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:16,816 INFO L87 Difference]: Start difference. First operand 1396 states and 1672 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:21,655 INFO L93 Difference]: Finished difference Result 2553 states and 3058 transitions. [2021-11-23 02:42:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:42:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 02:42:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:21,677 INFO L225 Difference]: With dead ends: 2553 [2021-11-23 02:42:21,677 INFO L226 Difference]: Without dead ends: 2553 [2021-11-23 02:42:21,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:21,678 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 2401 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:21,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2404 Valid, 2702 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 02:42:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-11-23 02:42:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1392. [2021-11-23 02:42:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 855 states have (on average 1.904093567251462) internal successors, (1628), 1370 states have internal predecessors, (1628), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:42:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1664 transitions. [2021-11-23 02:42:21,723 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1664 transitions. Word has length 35 [2021-11-23 02:42:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:21,724 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 1664 transitions. [2021-11-23 02:42:21,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1664 transitions. [2021-11-23 02:42:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 02:42:21,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:21,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:21,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:21,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:21,945 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:21,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2021-11-23 02:42:21,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:21,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303450974] [2021-11-23 02:42:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:21,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:21,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:21,947 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:21,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 02:42:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:22,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:42:22,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:22,187 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 02:42:22,536 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 02:42:22,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:23,159 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 02:42:23,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:23,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303450974] [2021-11-23 02:42:23,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303450974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:23,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:23,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 02:42:23,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506586200] [2021-11-23 02:42:23,160 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:23,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:42:23,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:42:23,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:23,162 INFO L87 Difference]: Start difference. First operand 1392 states and 1664 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:37,736 INFO L93 Difference]: Finished difference Result 2203 states and 2643 transitions. [2021-11-23 02:42:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:42:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 02:42:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:37,753 INFO L225 Difference]: With dead ends: 2203 [2021-11-23 02:42:37,753 INFO L226 Difference]: Without dead ends: 2203 [2021-11-23 02:42:37,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:42:37,754 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 2182 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:37,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2182 Valid, 5065 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2021-11-23 02:42:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2021-11-23 02:42:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1388. [2021-11-23 02:42:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 855 states have (on average 1.894736842105263) internal successors, (1620), 1366 states have internal predecessors, (1620), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:42:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1656 transitions. [2021-11-23 02:42:37,794 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1656 transitions. Word has length 35 [2021-11-23 02:42:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:37,795 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 1656 transitions. [2021-11-23 02:42:37,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1656 transitions. [2021-11-23 02:42:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 02:42:37,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:37,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:37,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:38,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:38,021 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:38,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:38,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2063645645, now seen corresponding path program 1 times [2021-11-23 02:42:38,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:38,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330266255] [2021-11-23 02:42:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:38,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:38,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:38,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:38,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:42:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:38,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:42:38,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:38,458 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 02:42:38,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:38,605 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 02:42:38,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:38,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330266255] [2021-11-23 02:42:38,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330266255] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:38,606 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:38,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:42:38,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011591371] [2021-11-23 02:42:38,607 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:38,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:38,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:38,608 INFO L87 Difference]: Start difference. First operand 1388 states and 1656 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:38,702 INFO L93 Difference]: Finished difference Result 1376 states and 1636 transitions. [2021-11-23 02:42:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-23 02:42:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:38,710 INFO L225 Difference]: With dead ends: 1376 [2021-11-23 02:42:38,710 INFO L226 Difference]: Without dead ends: 1376 [2021-11-23 02:42:38,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:38,712 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 1104 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:38,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 2412 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:42:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-23 02:42:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-11-23 02:42:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 843 states have (on average 1.8979833926453145) internal successors, (1600), 1354 states have internal predecessors, (1600), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:42:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1636 transitions. [2021-11-23 02:42:38,744 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1636 transitions. Word has length 54 [2021-11-23 02:42:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:38,745 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1636 transitions. [2021-11-23 02:42:38,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1636 transitions. [2021-11-23 02:42:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:42:38,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:38,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:38,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:38,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:38,964 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash -202859289, now seen corresponding path program 1 times [2021-11-23 02:42:38,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:38,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19363777] [2021-11-23 02:42:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:38,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:38,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:38,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:39,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 02:42:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:42:39,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:39,513 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 02:42:39,514 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 18 treesize of output 23 [2021-11-23 02:42:39,659 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 02:42:39,660 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 3 case distinctions, treesize of input 43 treesize of output 54 [2021-11-23 02:42:40,374 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 02:42:40,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:40,754 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 02:42:40,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:40,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19363777] [2021-11-23 02:42:40,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19363777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:40,754 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:40,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 02:42:40,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21919884] [2021-11-23 02:42:40,755 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:40,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:42:40,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:42:40,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:40,757 INFO L87 Difference]: Start difference. First operand 1376 states and 1636 transitions. Second operand has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:40,977 INFO L93 Difference]: Finished difference Result 1386 states and 1649 transitions. [2021-11-23 02:42:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:42:40,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 02:42:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:40,987 INFO L225 Difference]: With dead ends: 1386 [2021-11-23 02:42:40,988 INFO L226 Difference]: Without dead ends: 1386 [2021-11-23 02:42:40,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:40,989 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 57 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:40,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 3084 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 1114 Unchecked, 0.2s Time] [2021-11-23 02:42:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-23 02:42:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1381. [2021-11-23 02:42:41,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 847 states have (on average 1.8949232585596223) internal successors, (1605), 1358 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 02:42:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1643 transitions. [2021-11-23 02:42:41,022 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1643 transitions. Word has length 62 [2021-11-23 02:42:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:41,022 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1643 transitions. [2021-11-23 02:42:41,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1643 transitions. [2021-11-23 02:42:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:42:41,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:41,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:41,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:41,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:42:41,239 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:42:41,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash -202859288, now seen corresponding path program 1 times [2021-11-23 02:42:41,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:42:41,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947366913] [2021-11-23 02:42:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:41,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:42:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:42:41,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:42:41,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:42:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:41,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:42:41,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:41,852 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:42:41,853 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 27 treesize of output 29 [2021-11-23 02:42:41,890 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:42:41,891 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 22 [2021-11-23 02:42:42,059 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-23 02:42:42,059 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 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-23 02:42:48,770 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 02:42:48,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:51,378 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 02:42:51,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:42:51,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947366913] [2021-11-23 02:42:51,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947366913] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:51,379 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:51,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-23 02:42:51,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760912011] [2021-11-23 02:42:51,380 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:51,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:42:51,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:42:51,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:42:51,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:42:51,382 INFO L87 Difference]: Start difference. First operand 1381 states and 1643 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:04,023 INFO L93 Difference]: Finished difference Result 1381 states and 1642 transitions. [2021-11-23 02:43:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:43:04,024 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 02:43:04,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:04,032 INFO L225 Difference]: With dead ends: 1381 [2021-11-23 02:43:04,032 INFO L226 Difference]: Without dead ends: 1381 [2021-11-23 02:43:04,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:43:04,033 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 78 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3501 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1358 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:04,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3501 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1091 Invalid, 0 Unknown, 1358 Unchecked, 12.5s Time] [2021-11-23 02:43:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-11-23 02:43:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2021-11-23 02:43:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 847 states have (on average 1.8937426210153483) internal successors, (1604), 1358 states have internal predecessors, (1604), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 02:43:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1642 transitions. [2021-11-23 02:43:04,066 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1642 transitions. Word has length 62 [2021-11-23 02:43:04,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:04,067 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1642 transitions. [2021-11-23 02:43:04,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1642 transitions. [2021-11-23 02:43:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:43:04,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:04,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:04,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:04,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:43:04,283 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:43:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:04,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1136013504, now seen corresponding path program 1 times [2021-11-23 02:43:04,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:43:04,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462028372] [2021-11-23 02:43:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:04,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:43:04,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:43:04,287 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:43:04,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 02:43:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:04,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:43:04,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:04,828 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 02:43:04,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:04,971 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 02:43:04,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:43:04,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462028372] [2021-11-23 02:43:04,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462028372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:04,972 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:04,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-23 02:43:04,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115234972] [2021-11-23 02:43:04,973 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:04,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:43:04,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:43:04,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:43:04,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:43:04,974 INFO L87 Difference]: Start difference. First operand 1381 states and 1642 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:05,140 INFO L93 Difference]: Finished difference Result 1395 states and 1656 transitions. [2021-11-23 02:43:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:43:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-23 02:43:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:05,150 INFO L225 Difference]: With dead ends: 1395 [2021-11-23 02:43:05,150 INFO L226 Difference]: Without dead ends: 1395 [2021-11-23 02:43:05,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:43:05,152 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 20 mSDsluCounter, 7054 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8232 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:05,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 8232 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-11-23 02:43:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1393. [2021-11-23 02:43:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 856 states have (on average 1.8878504672897196) internal successors, (1616), 1368 states have internal predecessors, (1616), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 02:43:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1656 transitions. [2021-11-23 02:43:05,188 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1656 transitions. Word has length 68 [2021-11-23 02:43:05,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:05,188 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1656 transitions. [2021-11-23 02:43:05,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:05,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1656 transitions. [2021-11-23 02:43:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:43:05,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:05,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:05,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:05,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:43:05,407 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:43:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1078181117, now seen corresponding path program 1 times [2021-11-23 02:43:05,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:43:05,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387664315] [2021-11-23 02:43:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:05,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:43:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:43:05,424 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:43:05,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 02:43:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:05,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:43:05,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:05,992 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 02:43:05,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:06,389 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 02:43:06,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:43:06,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387664315] [2021-11-23 02:43:06,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387664315] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:06,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:06,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 02:43:06,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133894512] [2021-11-23 02:43:06,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:06,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:43:06,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:43:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:43:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:43:06,393 INFO L87 Difference]: Start difference. First operand 1393 states and 1656 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:43:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:06,795 INFO L93 Difference]: Finished difference Result 1437 states and 1704 transitions. [2021-11-23 02:43:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:43:06,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2021-11-23 02:43:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:06,814 INFO L225 Difference]: With dead ends: 1437 [2021-11-23 02:43:06,814 INFO L226 Difference]: Without dead ends: 1437 [2021-11-23 02:43:06,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:43:06,816 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 127 mSDsluCounter, 5738 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 6915 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:06,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 6915 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:43:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-11-23 02:43:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1396. [2021-11-23 02:43:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 858 states have (on average 1.8857808857808858) internal successors, (1618), 1370 states have internal predecessors, (1618), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:43:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1659 transitions. [2021-11-23 02:43:06,862 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1659 transitions. Word has length 68 [2021-11-23 02:43:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:06,863 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1659 transitions. [2021-11-23 02:43:06,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:43:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1659 transitions. [2021-11-23 02:43:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:43:06,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:06,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:06,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:07,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:43:07,079 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:43:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash 396897840, now seen corresponding path program 1 times [2021-11-23 02:43:07,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:43:07,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043256422] [2021-11-23 02:43:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:07,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:43:07,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:43:07,082 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:43:07,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 02:43:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:07,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:43:07,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:07,528 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 02:43:07,833 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 02:43:07,834 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 15 treesize of output 20 [2021-11-23 02:43:07,852 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 02:43:07,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:08,356 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 02:43:08,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:43:08,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043256422] [2021-11-23 02:43:08,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043256422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:08,356 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:08,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2021-11-23 02:43:08,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804291324] [2021-11-23 02:43:08,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:08,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:43:08,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:43:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:43:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:43:08,359 INFO L87 Difference]: Start difference. First operand 1396 states and 1659 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:43:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:13,760 INFO L93 Difference]: Finished difference Result 2545 states and 3039 transitions. [2021-11-23 02:43:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:43:13,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2021-11-23 02:43:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:13,774 INFO L225 Difference]: With dead ends: 2545 [2021-11-23 02:43:13,774 INFO L226 Difference]: Without dead ends: 2545 [2021-11-23 02:43:13,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:43:13,775 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 1585 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2011 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:13,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 4029 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1792 Invalid, 0 Unknown, 2011 Unchecked, 5.3s Time] [2021-11-23 02:43:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-11-23 02:43:13,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1395. [2021-11-23 02:43:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 858 states have (on average 1.8846153846153846) internal successors, (1617), 1369 states have internal predecessors, (1617), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:43:13,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1658 transitions. [2021-11-23 02:43:13,814 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1658 transitions. Word has length 73 [2021-11-23 02:43:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:13,815 INFO L470 AbstractCegarLoop]: Abstraction has 1395 states and 1658 transitions. [2021-11-23 02:43:13,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:43:13,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1658 transitions. [2021-11-23 02:43:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:43:13,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:13,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:13,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:14,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:43:14,036 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:43:14,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash 396897841, now seen corresponding path program 1 times [2021-11-23 02:43:14,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:43:14,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445091351] [2021-11-23 02:43:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:14,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:43:14,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:43:14,039 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:43:14,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 02:43:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:14,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 02:43:14,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:14,551 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 02:43:14,561 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 02:43:17,470 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:43:17,470 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 26 treesize of output 28 [2021-11-23 02:43:17,481 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:43:17,482 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 20 treesize of output 20 [2021-11-23 02:43:17,510 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 02:43:17,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:31,765 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 02:43:31,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:43:31,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445091351] [2021-11-23 02:43:31,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445091351] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:31,765 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:31,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 02:43:31,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453872555] [2021-11-23 02:43:31,766 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:31,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:43:31,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:43:31,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:43:31,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=102, Unknown=2, NotChecked=0, Total=132 [2021-11-23 02:43:31,767 INFO L87 Difference]: Start difference. First operand 1395 states and 1658 transitions. Second operand has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:43:42,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:42,615 INFO L93 Difference]: Finished difference Result 2401 states and 2944 transitions. [2021-11-23 02:43:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:43:42,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 73 [2021-11-23 02:43:42,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:42,625 INFO L225 Difference]: With dead ends: 2401 [2021-11-23 02:43:42,626 INFO L226 Difference]: Without dead ends: 2401 [2021-11-23 02:43:42,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=43, Invalid=136, Unknown=3, NotChecked=0, Total=182 [2021-11-23 02:43:42,627 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 3963 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 6779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3587 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:42,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 4064 Invalid, 6779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3136 Invalid, 0 Unknown, 3587 Unchecked, 8.7s Time] [2021-11-23 02:43:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2021-11-23 02:43:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1363. [2021-11-23 02:43:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 860 states have (on average 1.8430232558139534) internal successors, (1585), 1337 states have internal predecessors, (1585), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:43:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1626 transitions. [2021-11-23 02:43:42,663 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1626 transitions. Word has length 73 [2021-11-23 02:43:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:42,664 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1626 transitions. [2021-11-23 02:43:42,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:43:42,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1626 transitions. [2021-11-23 02:43:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:43:42,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:42,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:42,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:42,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:43:42,879 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:43:42,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:42,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1622258381, now seen corresponding path program 1 times [2021-11-23 02:43:42,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:43:42,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619713808] [2021-11-23 02:43:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:42,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:43:42,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:43:42,881 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:43:42,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 02:43:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:43,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:43:43,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:43,237 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 02:43:43,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2021-11-23 02:43:43,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:43,367 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 02:43:43,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:43,564 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 02:43:43,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:43:43,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619713808] [2021-11-23 02:43:43,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619713808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:43,565 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:43,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-23 02:43:43,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170429074] [2021-11-23 02:43:43,566 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:43,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:43:43,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:43:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:43:43,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:43:43,567 INFO L87 Difference]: Start difference. First operand 1363 states and 1626 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:43:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:49,559 INFO L93 Difference]: Finished difference Result 1371 states and 1634 transitions. [2021-11-23 02:43:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:43:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2021-11-23 02:43:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:49,563 INFO L225 Difference]: With dead ends: 1371 [2021-11-23 02:43:49,563 INFO L226 Difference]: Without dead ends: 1371 [2021-11-23 02:43:49,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 145 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:43:49,564 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 23 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4719 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:49,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 4719 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 02:43:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2021-11-23 02:43:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1370. [2021-11-23 02:43:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 866 states have (on average 1.8394919168591224) internal successors, (1593), 1343 states have internal predecessors, (1593), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:43:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1634 transitions. [2021-11-23 02:43:49,594 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1634 transitions. Word has length 80 [2021-11-23 02:43:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:49,594 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1634 transitions. [2021-11-23 02:43:49,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:43:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1634 transitions. [2021-11-23 02:43:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:43:49,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:49,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:49,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:49,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:43:49,812 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:43:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1249597809, now seen corresponding path program 1 times [2021-11-23 02:43:49,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:43:49,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542234586] [2021-11-23 02:43:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:49,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:43:49,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:43:49,814 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:43:49,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 02:43:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:50,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 02:43:50,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:50,266 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 02:43:50,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-23 02:43:50,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2021-11-23 02:43:50,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 02:43:50,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-23 02:43:50,581 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 02:43:50,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:51,824 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 02:43:51,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:43:51,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542234586] [2021-11-23 02:43:51,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542234586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:51,825 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:51,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-23 02:43:51,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972996837] [2021-11-23 02:43:51,826 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:51,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:43:51,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:43:51,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:43:51,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:43:51,828 INFO L87 Difference]: Start difference. First operand 1370 states and 1634 transitions. Second operand has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:44:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:14,409 INFO L93 Difference]: Finished difference Result 1372 states and 1633 transitions. [2021-11-23 02:44:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:44:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 81 [2021-11-23 02:44:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:14,413 INFO L225 Difference]: With dead ends: 1372 [2021-11-23 02:44:14,413 INFO L226 Difference]: Without dead ends: 1372 [2021-11-23 02:44:14,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:44:14,414 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 45 mSDsluCounter, 5984 mSDsCounter, 0 mSdLazyCounter, 4399 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7120 SdHoareTripleChecker+Invalid, 4407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:14,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 7120 Invalid, 4407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 4399 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2021-11-23 02:44:14,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-11-23 02:44:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1370. [2021-11-23 02:44:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 866 states have (on average 1.838337182448037) internal successors, (1592), 1343 states have internal predecessors, (1592), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:44:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1633 transitions. [2021-11-23 02:44:14,440 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1633 transitions. Word has length 81 [2021-11-23 02:44:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:14,441 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1633 transitions. [2021-11-23 02:44:14,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:44:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1633 transitions. [2021-11-23 02:44:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 02:44:14,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:14,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:14,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:14,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:44:14,659 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:44:14,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:14,660 INFO L85 PathProgramCache]: Analyzing trace with hash -63374884, now seen corresponding path program 1 times [2021-11-23 02:44:14,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:44:14,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171151821] [2021-11-23 02:44:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:14,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:44:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:44:14,661 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:44:14,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 02:44:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:14,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:44:14,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:15,127 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 02:44:15,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:15,373 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 02:44:15,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:44:15,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171151821] [2021-11-23 02:44:15,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171151821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:44:15,374 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:44:15,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 02:44:15,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518620046] [2021-11-23 02:44:15,374 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:44:15,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:44:15,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:44:15,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:44:15,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:44:15,376 INFO L87 Difference]: Start difference. First operand 1370 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 02:44:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:15,582 INFO L93 Difference]: Finished difference Result 1382 states and 1646 transitions. [2021-11-23 02:44:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:44:15,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 88 [2021-11-23 02:44:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:15,587 INFO L225 Difference]: With dead ends: 1382 [2021-11-23 02:44:15,587 INFO L226 Difference]: Without dead ends: 1376 [2021-11-23 02:44:15,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:44:15,588 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 33 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:15,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 4548 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:44:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-23 02:44:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-11-23 02:44:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 871 states have (on average 1.8346727898966706) internal successors, (1598), 1349 states have internal predecessors, (1598), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-23 02:44:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1640 transitions. [2021-11-23 02:44:15,619 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1640 transitions. Word has length 88 [2021-11-23 02:44:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:15,620 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1640 transitions. [2021-11-23 02:44:15,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 02:44:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1640 transitions. [2021-11-23 02:44:15,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 02:44:15,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:15,622 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:15,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:15,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:44:15,839 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:44:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1800220956, now seen corresponding path program 1 times [2021-11-23 02:44:15,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:44:15,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205199477] [2021-11-23 02:44:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:15,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:44:15,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:44:15,842 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:44:15,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 02:44:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:16,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:44:16,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:16,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:16,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:44:16,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205199477] [2021-11-23 02:44:16,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205199477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:44:16,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1172842444] [2021-11-23 02:44:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:16,871 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:44:16,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:44:16,873 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:44:16,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-23 02:44:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:17,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:44:17,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:17,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:17,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1172842444] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:44:17,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337707511] [2021-11-23 02:44:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:17,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:44:17,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:17,686 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:44:17,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 02:44:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:17,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:44:17,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:18,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:18,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337707511] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:44:18,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:44:18,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 17 [2021-11-23 02:44:18,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006005753] [2021-11-23 02:44:18,570 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:44:18,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 02:44:18,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:44:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 02:44:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:44:18,572 INFO L87 Difference]: Start difference. First operand 1376 states and 1640 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 02:44:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:19,223 INFO L93 Difference]: Finished difference Result 1394 states and 1661 transitions. [2021-11-23 02:44:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 02:44:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2021-11-23 02:44:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:19,229 INFO L225 Difference]: With dead ends: 1394 [2021-11-23 02:44:19,229 INFO L226 Difference]: Without dead ends: 1385 [2021-11-23 02:44:19,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-23 02:44:19,231 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 66 mSDsluCounter, 9103 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 10248 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:19,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 10248 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:44:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2021-11-23 02:44:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1382. [2021-11-23 02:44:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 877 states have (on average 1.830102622576967) internal successors, (1605), 1355 states have internal predecessors, (1605), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-23 02:44:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1647 transitions. [2021-11-23 02:44:19,271 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1647 transitions. Word has length 90 [2021-11-23 02:44:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:19,272 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 1647 transitions. [2021-11-23 02:44:19,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 02:44:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1647 transitions. [2021-11-23 02:44:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 02:44:19,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:19,274 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:19,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-23 02:44:19,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-23 02:44:19,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:19,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:44:19,878 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:44:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash 903294876, now seen corresponding path program 2 times [2021-11-23 02:44:19,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:44:19,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849172789] [2021-11-23 02:44:19,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:44:19,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:44:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:44:19,880 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:44:19,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 02:44:20,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:44:20,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:44:20,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:44:20,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:20,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:21,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:44:21,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849172789] [2021-11-23 02:44:21,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849172789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:44:21,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1856873852] [2021-11-23 02:44:21,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:44:21,433 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:44:21,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:44:21,434 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:44:21,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-23 02:44:22,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:44:22,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:44:22,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:44:22,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:22,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:23,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1856873852] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:44:23,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005994922] [2021-11-23 02:44:23,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:44:23,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:44:23,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:23,012 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:44:23,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd77bd1e-9106-4da3-91f8-7151bf824db1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 02:45:44,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:45:44,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:45:44,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 02:45:44,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:45:45,323 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:45:45,323 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 14 treesize of output 14 [2021-11-23 02:45:45,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 14 [2021-11-23 02:47:30,916 WARN L227 SmtUtils]: Spent 29.32s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:47:30,917 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-23 02:47:30,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 82 [2021-11-23 02:47:31,543 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 02:47:31,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 127 treesize of output 40 [2021-11-23 02:47:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:47:31,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:47:33,696 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 02:47:33,696 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 66 treesize of output 65 [2021-11-23 02:51:54,033 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 02:51:54,034 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 119 treesize of output 118 [2021-11-23 02:51:57,289 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (= |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))) is different from false [2021-11-23 02:51:59,981 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) is different from false [2021-11-23 02:52:33,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 02:52:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:52:33,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005994922] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:52:33,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:52:33,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 18, 18] total 53 [2021-11-23 02:52:33,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566972876] [2021-11-23 02:52:33,673 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:52:33,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 02:52:33,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:52:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 02:52:33,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2197, Unknown=160, NotChecked=198, Total=2756 [2021-11-23 02:52:33,676 INFO L87 Difference]: Start difference. First operand 1382 states and 1647 transitions. Second operand has 53 states, 51 states have (on average 4.96078431372549) internal successors, (253), 49 states have internal predecessors, (253), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-23 02:52:39,929 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-23 02:52:41,975 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (= |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-23 02:54:00,067 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ bv1 32)) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))))))) (_ bv1 1))))) (= |c_old(#valid)| |c_#valid|) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-23 02:54:02,105 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))))))) (_ bv1 1))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= (_ bv2 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-23 02:54:28,802 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv4 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))))) (_ bv1 1)))))) is different from false [2021-11-23 02:54:30,827 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))) (_ bv1 1))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_88| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_88| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ bv5 32))) is different from false [2021-11-23 02:54:32,853 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv6 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1|) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_88| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_89| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_88| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_89| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))) (_ bv1 1))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#in~a#1.base|))))) (_ bv1 1)))) is different from false [2021-11-23 02:54:35,496 WARN L838 $PredicateComparison]: unable to prove that (and (not (bvult (_ bv6 32) |c_alt_bzero_#in~n#1|)) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_88| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_89| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_84| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_85| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_86| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_87| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_88| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_89| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))) (_ bv1 1))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#in~a#1.base|))))) (_ bv1 1)))) is different from false