./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:15,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:15,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:15,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:15,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:15,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:15,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:15,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:15,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:15,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:15,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:15,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:15,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:15,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:15,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:15,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:15,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:15,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:15,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:15,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:15,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:15,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:15,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:15,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:15,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:15,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:15,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:15,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:15,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:15,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:15,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:15,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:15,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:15,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:15,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:15,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:15,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:15,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:15,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:15,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:15,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:15,986 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:14:16,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:16,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:16,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:16,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:16,021 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:16,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:16,021 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:16,022 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:14:16,022 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:16,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:16,023 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:14:16,023 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:14:16,024 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:16,024 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:14:16,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:14:16,029 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:14:16,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:16,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:14:16,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:14:16,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:14:16,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:16,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:16,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:16,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:16,032 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:16,033 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:14:16,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:16,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:16,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:16,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:16,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:16,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:16,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:16,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:16,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:16,038 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:14:16,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:14:16,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:16,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:16,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:16,040 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 [2021-11-19 14:14:16,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:16,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:16,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:16,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:16,440 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:16,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-19 14:14:16,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data/ac02fbecc/9b88b42db946438ea0cd69beaf0dece9/FLAGdaafc0a14 [2021-11-19 14:14:17,296 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:17,298 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-19 14:14:17,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data/ac02fbecc/9b88b42db946438ea0cd69beaf0dece9/FLAGdaafc0a14 [2021-11-19 14:14:17,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data/ac02fbecc/9b88b42db946438ea0cd69beaf0dece9 [2021-11-19 14:14:17,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:17,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:17,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:17,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:17,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:17,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:17" (1/1) ... [2021-11-19 14:14:17,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8a8bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:17, skipping insertion in model container [2021-11-19 14:14:17,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:17" (1/1) ... [2021-11-19 14:14:17,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:17,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:18,047 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-19 14:14:18,057 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-19 14:14:18,060 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-19 14:14:18,102 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:18,121 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) [2021-11-19 14:14:18,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b3b689e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18, skipping insertion in model container [2021-11-19 14:14:18,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:18,130 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:14:18,134 INFO L158 Benchmark]: Toolchain (without parser) took 663.11ms. Allocated memory is still 96.5MB. Free memory was 60.1MB in the beginning and 68.8MB in the end (delta: -8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:14:18,136 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 66.3MB in the beginning and 66.3MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:14:18,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.79ms. Allocated memory is still 96.5MB. Free memory was 59.9MB in the beginning and 68.8MB in the end (delta: -8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:14:18,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 66.3MB in the beginning and 66.3MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.79ms. Allocated memory is still 96.5MB. Free memory was 59.9MB in the beginning and 68.8MB in the end (delta: -8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 642]: 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:20,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:20,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:20,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:20,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:20,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:20,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:20,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:20,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:20,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:20,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:20,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:20,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:20,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:20,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:20,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:20,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:20,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:20,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:20,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:20,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:20,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:20,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:20,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:21,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:21,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:21,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:21,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:21,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:21,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:21,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:21,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:21,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:21,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:21,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:21,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:21,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:21,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:21,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:21,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:21,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:21,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:14:21,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:21,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:21,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:21,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:21,054 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:21,054 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:21,055 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:21,055 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:21,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:21,056 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:21,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:21,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:14:21,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:14:21,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:21,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:21,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:21,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:21,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:21,062 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:14:21,062 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:14:21,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:14:21,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:21,063 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:21,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:21,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:21,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:14:21,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:21,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:21,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:21,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:21,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:21,067 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:14:21,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:21,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:21,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:21,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:21,068 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 [2021-11-19 14:14:21,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:21,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:21,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:21,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:21,594 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:21,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-19 14:14:21,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data/593c7eaeb/a331fb75133041d088586d2304f3bb4b/FLAGf46911860 [2021-11-19 14:14:22,443 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:22,444 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-19 14:14:22,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data/593c7eaeb/a331fb75133041d088586d2304f3bb4b/FLAGf46911860 [2021-11-19 14:14:22,621 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/data/593c7eaeb/a331fb75133041d088586d2304f3bb4b [2021-11-19 14:14:22,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:22,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:22,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:22,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:22,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:22,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:22" (1/1) ... [2021-11-19 14:14:22,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ee528b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:22, skipping insertion in model container [2021-11-19 14:14:22,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:22" (1/1) ... [2021-11-19 14:14:22,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:22,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:23,237 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-19 14:14:23,246 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-19 14:14:23,249 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-19 14:14:23,279 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:23,300 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:14:23,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:23,408 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-19 14:14:23,411 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-19 14:14:23,412 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-19 14:14:23,436 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:23,442 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:23,526 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-19 14:14:23,528 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-19 14:14:23,531 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_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-19 14:14:23,539 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:23,611 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:23,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23 WrapperNode [2021-11-19 14:14:23,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:23,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:23,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:23,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:23,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,719 INFO L137 Inliner]: procedures = 144, calls = 62, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 154 [2021-11-19 14:14:23,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:23,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:23,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:23,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:23,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:23,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:23,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:23,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:23,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (1/1) ... [2021-11-19 14:14:23,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:23,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:23,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:23,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-19 14:14:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-19 14:14:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-19 14:14:23,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-19 14:14:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-11-19 14:14:23,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-11-19 14:14:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:14:23,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:14:23,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:23,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:14:23,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-11-19 14:14:23,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-11-19 14:14:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:23,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:24,121 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:24,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:24,787 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:14:24,798 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:14:24,799 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 14:14:24,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:24 BoogieIcfgContainer [2021-11-19 14:14:24,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:14:24,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:14:24,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:14:24,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:14:24,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:22" (1/3) ... [2021-11-19 14:14:24,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae159c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:24, skipping insertion in model container [2021-11-19 14:14:24,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:23" (2/3) ... [2021-11-19 14:14:24,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae159c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:24, skipping insertion in model container [2021-11-19 14:14:24,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:24" (3/3) ... [2021-11-19 14:14:24,817 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2021-11-19 14:14:24,825 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:14:24,825 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:14:24,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:14:24,932 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-19 14:14:24,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:14:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 57 states have internal predecessors, (73), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 14:14:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:14:24,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:24,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:25,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1870817689, now seen corresponding path program 1 times [2021-11-19 14:14:25,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:25,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78830213] [2021-11-19 14:14:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:25,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:25,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:25,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:25,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:14:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:25,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:14:25,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:25,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:25,366 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:25,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78830213] [2021-11-19 14:14:25,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78830213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:25,368 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:25,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:14:25,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194859770] [2021-11-19 14:14:25,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:25,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:14:25,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:14:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:14:25,427 INFO L87 Difference]: Start difference. First operand has 69 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 57 states have internal predecessors, (73), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-11-19 14:14:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:25,462 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2021-11-19 14:14:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:14:25,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-11-19 14:14:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:25,474 INFO L225 Difference]: With dead ends: 135 [2021-11-19 14:14:25,474 INFO L226 Difference]: Without dead ends: 64 [2021-11-19 14:14:25,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:14:25,483 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:25,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-19 14:14:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-19 14:14:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 52 states have internal predecessors, (59), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 14:14:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-11-19 14:14:25,539 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 13 [2021-11-19 14:14:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:25,540 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-11-19 14:14:25,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-11-19 14:14:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-11-19 14:14:25,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:14:25,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:25,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:25,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:25,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:25,757 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:25,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash -831215416, now seen corresponding path program 1 times [2021-11-19 14:14:25,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:25,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083475180] [2021-11-19 14:14:25,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:25,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:25,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:25,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:25,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:14:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:25,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:14:25,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:26,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:26,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:26,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083475180] [2021-11-19 14:14:26,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083475180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:26,444 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:26,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:14:26,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933415068] [2021-11-19 14:14:26,445 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:26,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:14:26,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:14:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:14:26,450 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-11-19 14:14:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:27,243 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2021-11-19 14:14:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:14:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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 13 [2021-11-19 14:14:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:27,249 INFO L225 Difference]: With dead ends: 116 [2021-11-19 14:14:27,249 INFO L226 Difference]: Without dead ends: 110 [2021-11-19 14:14:27,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:14:27,252 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 58 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:27,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 375 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:14:27,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-19 14:14:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2021-11-19 14:14:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 77 states have internal predecessors, (93), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 14:14:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2021-11-19 14:14:27,283 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 115 transitions. Word has length 13 [2021-11-19 14:14:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:27,284 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 115 transitions. [2021-11-19 14:14:27,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-11-19 14:14:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 115 transitions. [2021-11-19 14:14:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:14:27,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:27,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:27,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:27,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:27,505 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:27,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1237351756, now seen corresponding path program 1 times [2021-11-19 14:14:27,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:27,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142067358] [2021-11-19 14:14:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:27,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:27,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:27,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:27,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:14:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:27,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:14:27,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:27,782 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 17 treesize of output 9 [2021-11-19 14:14:27,792 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 15 treesize of output 7 [2021-11-19 14:14:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:27,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:28,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:28,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142067358] [2021-11-19 14:14:28,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142067358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:28,009 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:28,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-19 14:14:28,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227540157] [2021-11-19 14:14:28,009 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:28,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:14:28,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:28,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:14:28,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:14:28,011 INFO L87 Difference]: Start difference. First operand 93 states and 115 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-19 14:14:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:28,565 INFO L93 Difference]: Finished difference Result 162 states and 195 transitions. [2021-11-19 14:14:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:14:28,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 14 [2021-11-19 14:14:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:28,568 INFO L225 Difference]: With dead ends: 162 [2021-11-19 14:14:28,568 INFO L226 Difference]: Without dead ends: 76 [2021-11-19 14:14:28,570 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 [2021-11-19 14:14:28,571 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 20 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:28,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 239 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:14:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-19 14:14:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2021-11-19 14:14:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 58 states have internal predecessors, (64), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-19 14:14:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2021-11-19 14:14:28,597 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 14 [2021-11-19 14:14:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:28,598 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2021-11-19 14:14:28,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-19 14:14:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2021-11-19 14:14:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:14:28,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:28,600 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] [2021-11-19 14:14:28,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:14:28,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:28,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash 470874341, now seen corresponding path program 1 times [2021-11-19 14:14:28,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:28,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818509923] [2021-11-19 14:14:28,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:28,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:28,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:28,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:28,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:14:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:28,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:14:28,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:28,996 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-11-19 14:14:28,997 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 1 case distinctions, treesize of input 9 treesize of output 13 [2021-11-19 14:14:29,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-19 14:14:29,111 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:14:29,111 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 [2021-11-19 14:14:29,479 INFO L354 Elim1Store]: treesize reduction 185, result has 18.5 percent of original size [2021-11-19 14:14:29,479 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 77 treesize of output 49 [2021-11-19 14:14:32,378 INFO L354 Elim1Store]: treesize reduction 99, result has 23.3 percent of original size [2021-11-19 14:14:32,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 56 [2021-11-19 14:14:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:32,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:34,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1370 treesize of output 1354 [2021-11-19 14:14:34,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:14:34,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:35,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:35,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818509923] [2021-11-19 14:14:35,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818509923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:14:35,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1805626181] [2021-11-19 14:14:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:35,183 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:35,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:14:35,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:14:35,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 14:14:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:35,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 14:14:35,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:35,442 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 7 treesize of output 3 [2021-11-19 14:14:35,469 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-11-19 14:14:35,469 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 1 case distinctions, treesize of input 9 treesize of output 13 [2021-11-19 14:14:35,479 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 9 treesize of output 3 [2021-11-19 14:14:35,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-19 14:14:35,815 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:14:35,816 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 18 treesize of output 18 [2021-11-19 14:14:36,325 INFO L354 Elim1Store]: treesize reduction 185, result has 18.5 percent of original size [2021-11-19 14:14:36,326 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 77 treesize of output 49 [2021-11-19 14:14:40,051 INFO L354 Elim1Store]: treesize reduction 54, result has 33.3 percent of original size [2021-11-19 14:14:40,052 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 50 [2021-11-19 14:14:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:40,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:41,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2870 treesize of output 2838 [2021-11-19 14:14:42,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:14:42,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:42,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:42,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1805626181] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:14:42,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953790724] [2021-11-19 14:14:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:42,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:14:42,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:42,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:14:42,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 14:14:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:42,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:14:42,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:42,594 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-11-19 14:14:42,595 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 1 case distinctions, treesize of input 9 treesize of output 13 [2021-11-19 14:14:42,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-19 14:14:42,657 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:14:42,657 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 [2021-11-19 14:14:42,912 INFO L354 Elim1Store]: treesize reduction 185, result has 18.5 percent of original size [2021-11-19 14:14:42,912 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 77 treesize of output 49 [2021-11-19 14:14:44,992 INFO L354 Elim1Store]: treesize reduction 99, result has 23.3 percent of original size [2021-11-19 14:14:44,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 56 [2021-11-19 14:14:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:45,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:46,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 722 treesize of output 714 [2021-11-19 14:14:46,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:14:46,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:46,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953790724] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:14:46,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:14:46,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 34 [2021-11-19 14:14:46,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565982504] [2021-11-19 14:14:46,442 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:14:46,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 14:14:46,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:46,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 14:14:46,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1005, Unknown=1, NotChecked=0, Total=1122 [2021-11-19 14:14:46,445 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 34 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 8 states have call successors, (9), 5 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-11-19 14:14:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:48,573 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2021-11-19 14:14:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:14:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 8 states have call successors, (9), 5 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) Word has length 31 [2021-11-19 14:14:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:48,577 INFO L225 Difference]: With dead ends: 139 [2021-11-19 14:14:48,577 INFO L226 Difference]: Without dead ends: 111 [2021-11-19 14:14:48,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=232, Invalid=1837, Unknown=1, NotChecked=0, Total=2070 [2021-11-19 14:14:48,580 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 69 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:48,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 959 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 423 Invalid, 0 Unknown, 216 Unchecked, 1.4s Time] [2021-11-19 14:14:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-19 14:14:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2021-11-19 14:14:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 73 states have internal predecessors, (80), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 14:14:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-11-19 14:14:48,596 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 31 [2021-11-19 14:14:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:48,596 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-11-19 14:14:48,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 8 states have call successors, (9), 5 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-11-19 14:14:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-11-19 14:14:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 14:14:48,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:48,599 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] [2021-11-19 14:14:48,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:48,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:49,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:49,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:49,207 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1347538737, now seen corresponding path program 1 times [2021-11-19 14:14:49,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:49,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862245753] [2021-11-19 14:14:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:49,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:49,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:49,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:49,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:14:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:49,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:14:49,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:14:49,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:14:49,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:49,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862245753] [2021-11-19 14:14:49,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862245753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:49,467 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:49,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:14:49,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278712087] [2021-11-19 14:14:49,467 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:49,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:14:49,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:49,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:14:49,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:49,469 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:14:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:49,485 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-11-19 14:14:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:14:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-11-19 14:14:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:49,487 INFO L225 Difference]: With dead ends: 98 [2021-11-19 14:14:49,487 INFO L226 Difference]: Without dead ends: 96 [2021-11-19 14:14:49,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:49,489 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:49,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-19 14:14:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-11-19 14:14:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 75 states have internal predecessors, (82), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2021-11-19 14:14:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-11-19 14:14:49,503 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 32 [2021-11-19 14:14:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:49,503 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-11-19 14:14:49,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:14:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-11-19 14:14:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 14:14:49,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:49,505 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] [2021-11-19 14:14:49,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:49,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:49,719 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:49,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:49,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1296745082, now seen corresponding path program 1 times [2021-11-19 14:14:49,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:49,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119432723] [2021-11-19 14:14:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:49,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:49,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:49,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:49,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:14:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:49,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-19 14:14:49,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:49,948 INFO L354 Elim1Store]: treesize reduction 43, result has 31.7 percent of original size [2021-11-19 14:14:49,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2021-11-19 14:14:50,387 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:14:50,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2021-11-19 14:14:50,964 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-19 14:14:50,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 50 [2021-11-19 14:14:51,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2021-11-19 14:14:51,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 14:15:23,759 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 115 DAG size of output: 33 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:15:23,760 INFO L354 Elim1Store]: treesize reduction 478, result has 9.3 percent of original size [2021-11-19 14:15:23,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 286 treesize of output 187 [2021-11-19 14:15:25,079 INFO L354 Elim1Store]: treesize reduction 652, result has 7.8 percent of original size [2021-11-19 14:15:25,079 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 399 treesize of output 265 [2021-11-19 14:15:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:15:35,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:20,306 WARN L227 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:16:24,623 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v___ldv_list_add_~prev.offset_37 (_ BitVec 32)) (v___ldv_list_add_~next.offset_43 (_ BitVec 32)) (v___ldv_list_add_~new.offset_43 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (let ((.cse2 (select (select |c_old(#memory_$Pointer$.base)| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (let ((.cse1 (store |c_old(#memory_$Pointer$.base)| .cse2 (store (select |c_old(#memory_$Pointer$.base)| .cse2) (bvadd (_ bv4 32) v___ldv_list_add_~next.offset_43) |c_ldv_list_add_#in~new.base|)))) (store .cse1 |c_ldv_list_add_#in~new.base| (store (store (select .cse1 |c_ldv_list_add_#in~new.base|) v___ldv_list_add_~new.offset_43 .cse2) (bvadd v___ldv_list_add_~new.offset_43 (_ bv4 32)) |c_~#drvlist~0.base|)))))) (store .cse0 |c_~#drvlist~0.base| (store (select .cse0 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_37 |c_ldv_list_add_#in~new.base|))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) |c_~#mutexes~0.base|))) (not (= |c_~#drvlist~0.base| |c_ldv_list_add_#in~head.base|)) (not (= |c_~#drvlist~0.offset| |c_ldv_list_add_#in~head.offset|)) (and (forall ((v___ldv_list_add_~next.offset_46 (_ BitVec 32)) (v___ldv_list_add_~prev.offset_40 (_ BitVec 32)) (v___ldv_list_add_~new.offset_46 (_ BitVec 32))) (= (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ldv_list_add_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ldv_list_add_#t~mem6.base|) (bvadd (_ bv4 32) v___ldv_list_add_~next.offset_46) c_ldv_list_add_~new.base)))) (store .cse4 c_ldv_list_add_~new.base (store (store (select .cse4 c_ldv_list_add_~new.base) v___ldv_list_add_~new.offset_46 |c_ldv_list_add_#t~mem6.base|) (bvadd v___ldv_list_add_~new.offset_46 (_ bv4 32)) c_ldv_list_add_~head.base))))) (store .cse3 c_ldv_list_add_~head.base (store (select .cse3 c_ldv_list_add_~head.base) v___ldv_list_add_~prev.offset_40 c_ldv_list_add_~new.base))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) |c_~#mutexes~0.base|)) (forall ((v___ldv_list_add_~next.offset_46 (_ BitVec 32)) (v___ldv_list_add_~prev.offset_40 (_ BitVec 32)) (v___ldv_list_add_~new.offset_46 (_ BitVec 32))) (= |c_~#mutexes~0.offset| (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ldv_list_add_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ldv_list_add_#t~mem6.base|) (bvadd (_ bv4 32) v___ldv_list_add_~next.offset_46) v___ldv_list_add_~new.offset_46)))) (store .cse6 c_ldv_list_add_~new.base (store (store (select .cse6 c_ldv_list_add_~new.base) v___ldv_list_add_~new.offset_46 v___ldv_list_add_~next.offset_46) (bvadd v___ldv_list_add_~new.offset_46 (_ bv4 32)) v___ldv_list_add_~prev.offset_40))))) (store .cse5 c_ldv_list_add_~head.base (store (select .cse5 c_ldv_list_add_~head.base) v___ldv_list_add_~prev.offset_40 v___ldv_list_add_~new.offset_46))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|)))) (exists ((v___ldv_list_add_~prev.offset_37 (_ BitVec 32)) (v___ldv_list_add_~next.offset_43 (_ BitVec 32)) (v___ldv_list_add_~new.offset_43 (_ BitVec 32))) (not (= |c_~#mutexes~0.offset| (select (select (let ((.cse7 (let ((.cse8 (let ((.cse9 (select (select |c_old(#memory_$Pointer$.base)| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (store |c_old(#memory_$Pointer$.offset)| .cse9 (store (select |c_old(#memory_$Pointer$.offset)| .cse9) (bvadd (_ bv4 32) v___ldv_list_add_~next.offset_43) v___ldv_list_add_~new.offset_43))))) (store .cse8 |c_ldv_list_add_#in~new.base| (store (store (select .cse8 |c_ldv_list_add_#in~new.base|) v___ldv_list_add_~new.offset_43 v___ldv_list_add_~next.offset_43) (bvadd v___ldv_list_add_~new.offset_43 (_ bv4 32)) v___ldv_list_add_~prev.offset_37))))) (store .cse7 |c_~#drvlist~0.base| (store (select .cse7 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_37 v___ldv_list_add_~new.offset_43))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|))))) is different from true [2021-11-19 14:16:24,814 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:16:24,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3053 treesize of output 2928 [2021-11-19 14:16:24,980 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 9020 treesize of output 8956 [2021-11-19 14:26:53,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:53,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119432723] [2021-11-19 14:26:53,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 14:26:53,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [225386488] [2021-11-19 14:26:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:53,006 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:26:53,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:26:53,008 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:26:53,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46e6a99-c7a1-4cb5-860c-5f4afdaeb2b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 14:26:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:53,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-19 14:26:53,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:53,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-19 14:26:55,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:55,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-11-19 14:26:55,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:55,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-11-19 14:27:34,664 INFO L354 Elim1Store]: treesize reduction 435, result has 9.2 percent of original size [2021-11-19 14:27:34,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 281 treesize of output 173 [2021-11-19 14:27:34,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:27:36,999 INFO L354 Elim1Store]: treesize reduction 671, result has 19.5 percent of original size [2021-11-19 14:27:36,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 360 treesize of output 314