./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta --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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:36:55,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:36:55,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:36:55,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:36:55,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:36:55,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:36:55,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:36:55,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:36:55,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:36:55,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:36:55,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:36:55,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:36:55,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:36:55,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:36:55,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:36:55,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:36:55,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:36:55,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:36:55,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:36:55,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:36:55,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:36:55,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:36:55,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:36:55,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:36:55,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:36:55,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:36:55,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:36:55,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:36:55,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:36:55,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:36:55,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:36:55,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:36:55,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:36:55,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:36:55,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:36:55,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:36:55,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:36:55,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:36:55,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:36:55,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:36:55,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:36:55,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-10-17 17:36:55,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:36:55,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:36:55,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:36:55,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:36:55,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:36:55,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:36:55,599 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:36:55,599 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:36:55,599 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:36:55,600 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:36:55,600 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:36:55,600 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:36:55,600 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:36:55,601 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:36:55,601 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:36:55,601 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:36:55,601 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:36:55,602 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:36:55,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:36:55,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:36:55,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:36:55,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:36:55,605 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:36:55,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:36:55,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:36:55,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:36:55,607 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:36:55,608 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:36:55,608 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:36:55,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:36:55,609 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:36:55,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:36:55,610 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:36:55,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:36:55,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:36:55,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:55,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:36:55,612 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:36:55,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:36:55,613 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:36:55,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:36:55,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:36:55,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2022-10-17 17:36:55,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:36:55,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:36:55,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:36:55,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:36:55,993 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:36:55,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-10-17 17:36:56,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data/48c19034c/af8094cbb2a44143b69e8babf2315ff6/FLAGb276c4b16 [2022-10-17 17:36:56,754 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:36:56,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-10-17 17:36:56,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data/48c19034c/af8094cbb2a44143b69e8babf2315ff6/FLAGb276c4b16 [2022-10-17 17:36:56,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data/48c19034c/af8094cbb2a44143b69e8babf2315ff6 [2022-10-17 17:36:56,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:36:56,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:36:56,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:56,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:36:56,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:36:56,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:56" (1/1) ... [2022-10-17 17:36:56,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3c8c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:56, skipping insertion in model container [2022-10-17 17:36:56,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:56" (1/1) ... [2022-10-17 17:36:56,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:36:57,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:36:57,816 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-10-17 17:36:57,840 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-10-17 17:36:57,970 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-10-17 17:36:57,971 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-10-17 17:36:57,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:58,016 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-10-17 17:36:58,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@676f7f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:58, skipping insertion in model container [2022-10-17 17:36:58,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:58,017 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 17:36:58,019 INFO L158 Benchmark]: Toolchain (without parser) took 1101.29ms. Allocated memory is still 102.8MB. Free memory was 63.9MB in the beginning and 65.9MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:36:58,020 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 102.8MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:36:58,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1097.16ms. Allocated memory is still 102.8MB. Free memory was 63.7MB in the beginning and 65.9MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:36:58,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 102.8MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1097.16ms. Allocated memory is still 102.8MB. Free memory was 63.7MB in the beginning and 65.9MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. 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 of different sizes 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_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta --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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:37:00,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:00,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:00,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:00,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:00,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:00,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:00,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:00,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:00,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:00,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:00,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:00,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:00,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:00,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:00,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:00,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:00,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:00,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:00,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:00,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:00,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:00,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:00,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:00,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:00,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:00,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:00,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:00,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:00,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:00,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:00,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:00,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:00,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:00,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:00,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:00,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:00,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:00,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:00,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:00,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:00,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-10-17 17:37:00,549 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:00,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:00,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:00,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:00,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:00,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:00,552 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:00,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:00,553 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:00,553 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:00,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:00,554 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:00,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:37:00,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:37:00,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:00,557 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:37:00,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:37:00,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:00,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:37:00,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:00,557 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:37:00,558 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:37:00,558 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:37:00,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:00,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:37:00,558 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:37:00,559 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:37:00,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:37:00,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:00,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:00,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:37:00,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:00,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:00,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:00,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:00,561 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:37:00,561 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:37:00,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:00,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:37:00,575 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_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2022-10-17 17:37:00,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:01,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:01,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:01,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:01,007 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:01,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-10-17 17:37:01,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data/00dbfa285/5ab5785c35244a6684198bdef5c5360f/FLAG28b577c9c [2022-10-17 17:37:01,826 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:01,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-10-17 17:37:01,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data/00dbfa285/5ab5785c35244a6684198bdef5c5360f/FLAG28b577c9c [2022-10-17 17:37:02,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/data/00dbfa285/5ab5785c35244a6684198bdef5c5360f [2022-10-17 17:37:02,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:02,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:02,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:02,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:02,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:02,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:02" (1/1) ... [2022-10-17 17:37:02,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf8b159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:02, skipping insertion in model container [2022-10-17 17:37:02,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:02" (1/1) ... [2022-10-17 17:37:02,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:02,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:02,741 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-10-17 17:37:02,753 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-10-17 17:37:02,916 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-10-17 17:37:02,918 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-10-17 17:37:02,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:02,977 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 17:37:03,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:03,031 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-10-17 17:37:03,034 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-10-17 17:37:03,100 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-10-17 17:37:03,109 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-10-17 17:37:03,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:03,137 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:03,185 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-10-17 17:37:03,198 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-10-17 17:37:03,259 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-10-17 17:37:03,260 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_609d19eb-b2a6-4224-947c-da88997cea06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-10-17 17:37:03,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:03,334 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:03,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03 WrapperNode [2022-10-17 17:37:03,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:03,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:03,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:03,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:03,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,495 INFO L138 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1204 [2022-10-17 17:37:03,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:03,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:03,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:03,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:03,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:03,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:03,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:03,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:03,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (1/1) ... [2022-10-17 17:37:03,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:03,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:03,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:03,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 17:37:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:37:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:37:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 17:37:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:37:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:37:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:37:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:37:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-10-17 17:37:03,810 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-10-17 17:37:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:37:03,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:37:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:37:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-10-17 17:37:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-10-17 17:37:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:37:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-10-17 17:37:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-10-17 17:37:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:04,191 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:04,193 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:37:10,452 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:37:10,467 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:37:10,467 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-10-17 17:37:10,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:10 BoogieIcfgContainer [2022-10-17 17:37:10,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:37:10,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:37:10,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:37:10,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:37:10,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:02" (1/3) ... [2022-10-17 17:37:10,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4710e969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:10, skipping insertion in model container [2022-10-17 17:37:10,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:03" (2/3) ... [2022-10-17 17:37:10,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4710e969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:10, skipping insertion in model container [2022-10-17 17:37:10,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:10" (3/3) ... [2022-10-17 17:37:10,481 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2022-10-17 17:37:10,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:37:10,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2022-10-17 17:37:10,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:37:10,575 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30872faf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:37:10,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2022-10-17 17:37:10,584 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) [2022-10-17 17:37:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:37:10,590 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:10,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:37:10,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-10-17 17:37:10,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:10,597 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2022-10-17 17:37:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:10,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199089801] [2022-10-17 17:37:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:10,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:10,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:10,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:10,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:37:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:10,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:37:10,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:10,914 INFO L390 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 7 [2022-10-17 17:37:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:10,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:10,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:10,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199089801] [2022-10-17 17:37:10,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199089801] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:10,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:10,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:37:10,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639383378] [2022-10-17 17:37:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:10,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:10,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:11,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:11,044 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) [2022-10-17 17:37:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:14,047 INFO L93 Difference]: Finished difference Result 1537 states and 1627 transitions. [2022-10-17 17:37:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:14,050 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 [2022-10-17 17:37:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:14,084 INFO L225 Difference]: With dead ends: 1537 [2022-10-17 17:37:14,085 INFO L226 Difference]: Without dead ends: 1535 [2022-10-17 17:37:14,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:14,093 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 906 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.9s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:14,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1258 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-17 17:37:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2022-10-17 17:37:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1300. [2022-10-17 17:37:14,215 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) [2022-10-17 17:37:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1420 transitions. [2022-10-17 17:37:14,225 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1420 transitions. Word has length 3 [2022-10-17 17:37:14,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:14,226 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1420 transitions. [2022-10-17 17:37:14,226 INFO L496 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) [2022-10-17 17:37:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1420 transitions. [2022-10-17 17:37:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:37:14,227 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:14,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:37:14,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:14,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:14,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-10-17 17:37:14,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2022-10-17 17:37:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:14,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207385653] [2022-10-17 17:37:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:14,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:14,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:14,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:14,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:37:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:14,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:37:14,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:14,614 INFO L390 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 [2022-10-17 17:37:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:14,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:14,626 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:14,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207385653] [2022-10-17 17:37:14,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207385653] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:14,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:14,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:37:14,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156413969] [2022-10-17 17:37:14,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:14,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:14,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:14,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:14,631 INFO L87 Difference]: Start difference. First operand 1300 states and 1420 transitions. 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) [2022-10-17 17:37:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:18,863 INFO L93 Difference]: Finished difference Result 1891 states and 2058 transitions. [2022-10-17 17:37:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:18,864 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 [2022-10-17 17:37:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:18,874 INFO L225 Difference]: With dead ends: 1891 [2022-10-17 17:37:18,874 INFO L226 Difference]: Without dead ends: 1891 [2022-10-17 17:37:18,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:18,877 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 624 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:18,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1758 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-10-17 17:37:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-10-17 17:37:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1504. [2022-10-17 17:37:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 863 states have (on average 2.0880648899188876) internal successors, (1802), 1483 states have internal predecessors, (1802), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-10-17 17:37:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1836 transitions. [2022-10-17 17:37:18,945 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1836 transitions. Word has length 3 [2022-10-17 17:37:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:18,946 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 1836 transitions. [2022-10-17 17:37:18,947 INFO L496 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) [2022-10-17 17:37:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1836 transitions. [2022-10-17 17:37:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:37:18,950 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:18,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:18,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:19,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:19,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-10-17 17:37:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:19,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2022-10-17 17:37:19,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:19,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132650607] [2022-10-17 17:37:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:19,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:19,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:19,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:19,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:37:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:19,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 17:37:19,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:19,371 INFO L390 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 [2022-10-17 17:37:19,377 INFO L390 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 7 [2022-10-17 17:37:19,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:37:19,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 12 treesize of output 14 [2022-10-17 17:37:19,496 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 17:37:19,496 INFO L390 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 13 treesize of output 13 [2022-10-17 17:37:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:19,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:19,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:19,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132650607] [2022-10-17 17:37:19,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132650607] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:19,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:19,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133206481] [2022-10-17 17:37:19,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:19,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:37:19,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:19,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:37:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:37:19,536 INFO L87 Difference]: Start difference. First operand 1504 states and 1836 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-10-17 17:37:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:24,787 INFO L93 Difference]: Finished difference Result 2569 states and 2979 transitions. [2022-10-17 17:37:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:37:24,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-10-17 17:37:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:24,802 INFO L225 Difference]: With dead ends: 2569 [2022-10-17 17:37:24,802 INFO L226 Difference]: Without dead ends: 2569 [2022-10-17 17:37:24,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:37:24,804 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2002 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:24,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 1477 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-10-17 17:37:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2022-10-17 17:37:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1649. [2022-10-17 17:37:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1008 states have (on average 2.068452380952381) internal successors, (2085), 1628 states have internal predecessors, (2085), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-10-17 17:37:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2119 transitions. [2022-10-17 17:37:24,860 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2119 transitions. Word has length 8 [2022-10-17 17:37:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:24,860 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2119 transitions. [2022-10-17 17:37:24,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-10-17 17:37:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2119 transitions. [2022-10-17 17:37:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:37:24,862 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:24,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:24,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:25,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:37:25,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-10-17 17:37:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2022-10-17 17:37:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:37:25,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743863761] [2022-10-17 17:37:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:25,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:37:25,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:37:25,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:37:25,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609d19eb-b2a6-4224-947c-da88997cea06/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:37:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:25,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:37:25,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:25,270 INFO L390 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 7 [2022-10-17 17:37:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:25,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:37:25,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:37:25,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743863761] [2022-10-17 17:37:25,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743863761] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:25,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:25,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:25,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544360438] [2022-10-17 17:37:25,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:25,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:37:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:37:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:37:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:37:25,298 INFO L87 Difference]: Start difference. First operand 1649 states and 2119 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)