./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/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_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:50:29,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:50:29,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:50:29,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:50:29,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:50:29,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:50:29,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:50:29,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:50:29,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:50:29,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:50:29,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:50:29,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:50:29,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:50:29,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:50:29,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:50:29,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:50:29,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:50:29,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:50:29,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:50:29,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:50:29,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:50:30,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:50:30,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:50:30,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:50:30,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:50:30,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:50:30,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:50:30,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:50:30,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:50:30,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:50:30,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:50:30,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:50:30,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:50:30,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:50:30,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:50:30,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:50:30,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:50:30,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:50:30,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:50:30,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:50:30,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:50:30,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 14:50:30,070 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:50:30,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:50:30,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:50:30,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:50:30,072 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:50:30,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:50:30,072 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:50:30,072 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:50:30,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:50:30,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:50:30,073 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:50:30,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:50:30,073 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:50:30,073 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:50:30,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:50:30,074 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:50:30,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:50:30,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:50:30,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:50:30,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:50:30,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:50:30,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:50:30,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:50:30,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:50:30,076 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:50:30,076 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:50:30,076 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:50:30,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:50:30,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:50:30,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:50:30,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:50:30,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:50:30,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:50:30,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:50:30,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:50:30,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:50:30,078 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:50:30,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:50:30,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:50:30,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:50:30,079 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_aa25e7a0-529b-477a-923e-dd385282189a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2021-11-19 14:50:30,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:50:30,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:50:30,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:50:30,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:50:30,381 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:50:30,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-19 14:50:30,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data/670d6904c/54acf217c4e941028e74fb39df90878c/FLAG9e2e7c0b5 [2021-11-19 14:50:31,038 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:50:31,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-19 14:50:31,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data/670d6904c/54acf217c4e941028e74fb39df90878c/FLAG9e2e7c0b5 [2021-11-19 14:50:31,276 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data/670d6904c/54acf217c4e941028e74fb39df90878c [2021-11-19 14:50:31,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:50:31,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:50:31,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:50:31,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:50:31,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:50:31,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:50:31" (1/1) ... [2021-11-19 14:50:31,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d0116d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:31, skipping insertion in model container [2021-11-19 14:50:31,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:50:31" (1/1) ... [2021-11-19 14:50:31,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:50:31,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:50:31,870 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_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-19 14:50:32,083 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_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-19 14:50:32,118 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:50:32,133 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 14:50:32,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f5013ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:32, skipping insertion in model container [2021-11-19 14:50:32,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:50:32,134 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:50:32,136 INFO L158 Benchmark]: Toolchain (without parser) took 854.34ms. Allocated memory is still 111.1MB. Free memory was 71.9MB in the beginning and 72.3MB in the end (delta: -387.7kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:50:32,136 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:50:32,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 849.08ms. Allocated memory is still 111.1MB. Free memory was 71.6MB in the beginning and 72.3MB in the end (delta: -610.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:50:32,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 849.08ms. Allocated memory is still 111.1MB. Free memory was 71.6MB in the beginning and 72.3MB in the end (delta: -610.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/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_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:50:34,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:50:34,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:50:34,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:50:34,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:50:34,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:50:34,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:50:34,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:50:34,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:50:34,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:50:34,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:50:34,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:50:34,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:50:34,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:50:34,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:50:34,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:50:34,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:50:34,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:50:34,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:50:34,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:50:34,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:50:34,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:50:34,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:50:34,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:50:34,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:50:34,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:50:34,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:50:34,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:50:34,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:50:34,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:50:34,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:50:34,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:50:34,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:50:34,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:50:34,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:50:34,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:50:34,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:50:34,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:50:34,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:50:34,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:50:34,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:50:34,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 14:50:34,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:50:34,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:50:34,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:50:34,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:50:34,621 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:50:34,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:50:34,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:50:34,622 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:50:34,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:50:34,622 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:50:34,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:50:34,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:50:34,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:50:34,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:50:34,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:50:34,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:50:34,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:50:34,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:50:34,626 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:50:34,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:50:34,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:50:34,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:50:34,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:50:34,627 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:50:34,628 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:50:34,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:50:34,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:50:34,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:50:34,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:50:34,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:50:34,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:50:34,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:50:34,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:50:34,630 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:50:34,631 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:50:34,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:50:34,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:50:34,632 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_aa25e7a0-529b-477a-923e-dd385282189a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2021-11-19 14:50:35,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:50:35,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:50:35,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:50:35,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:50:35,074 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:50:35,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-19 14:50:35,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data/52c3c7612/51b5161f2e21476ab13ba3dd0c88e03c/FLAGe49397ff8 [2021-11-19 14:50:35,880 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:50:35,881 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-19 14:50:35,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data/52c3c7612/51b5161f2e21476ab13ba3dd0c88e03c/FLAGe49397ff8 [2021-11-19 14:50:35,990 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/data/52c3c7612/51b5161f2e21476ab13ba3dd0c88e03c [2021-11-19 14:50:35,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:50:35,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:50:35,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:50:35,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:50:36,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:50:36,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:50:35" (1/1) ... [2021-11-19 14:50:36,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a677e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:36, skipping insertion in model container [2021-11-19 14:50:36,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:50:35" (1/1) ... [2021-11-19 14:50:36,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:50:36,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:50:36,659 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_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-19 14:50:36,886 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_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-19 14:50:36,920 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:50:36,954 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:50:36,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:50:37,001 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_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-19 14:50:37,128 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_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-19 14:50:37,160 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:50:37,166 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:50:37,210 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_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-19 14:50:37,320 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_aa25e7a0-529b-477a-923e-dd385282189a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-19 14:50:37,340 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:50:37,384 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:50:37,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37 WrapperNode [2021-11-19 14:50:37,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:50:37,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:50:37,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:50:37,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:50:37,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,573 INFO L137 Inliner]: procedures = 180, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1721 [2021-11-19 14:50:37,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:50:37,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:50:37,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:50:37,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:50:37,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:50:37,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:50:37,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:50:37,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:50:37,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (1/1) ... [2021-11-19 14:50:37,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:50:37,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:50:37,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:50:37,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:50:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:50:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:50:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:50:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:50:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:50:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:50:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:50:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:50:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:50:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:50:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:50:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:50:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:50:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:50:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:50:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:50:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:50:38,199 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:50:38,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:50:38,205 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 14:50:46,097 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:50:46,121 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:50:46,122 INFO L301 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-19 14:50:46,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:50:46 BoogieIcfgContainer [2021-11-19 14:50:46,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:50:46,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:50:46,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:50:46,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:50:46,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:50:35" (1/3) ... [2021-11-19 14:50:46,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c044c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:50:46, skipping insertion in model container [2021-11-19 14:50:46,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:50:37" (2/3) ... [2021-11-19 14:50:46,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c044c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:50:46, skipping insertion in model container [2021-11-19 14:50:46,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:50:46" (3/3) ... [2021-11-19 14:50:46,136 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-3.i [2021-11-19 14:50:46,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:50:46,142 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-11-19 14:50:46,194 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:50:46,204 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:50:46,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-11-19 14:50:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 14:50:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:50:46,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:46,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:50:46,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:50:46,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-19 14:50:46,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:46,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047323418] [2021-11-19 14:50:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:46,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:46,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:46,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:46,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:50:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:46,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:50:46,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:46,546 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 14:50:46,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:46,557 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 14:50:46,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:46,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047323418] [2021-11-19 14:50:46,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047323418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:46,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:46,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:50:46,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292801415] [2021-11-19 14:50:46,561 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:46,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:50:46,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:46,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:50:46,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:50:46,596 INFO L87 Difference]: Start difference. First operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:50:46,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:46,737 INFO L93 Difference]: Finished difference Result 1815 states and 1917 transitions. [2021-11-19 14:50:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:50:46,740 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 14:50:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:46,792 INFO L225 Difference]: With dead ends: 1815 [2021-11-19 14:50:46,793 INFO L226 Difference]: Without dead ends: 1813 [2021-11-19 14:50:46,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 14:50:46,798 INFO L933 BasicCegarLoop]: 1917 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, 1917 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 14:50:46,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:50:46,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2021-11-19 14:50:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1813. [2021-11-19 14:50:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 884 states have (on average 2.1414027149321266) internal successors, (1893), 1804 states have internal predecessors, (1893), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 14:50:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 1915 transitions. [2021-11-19 14:50:46,970 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 1915 transitions. Word has length 5 [2021-11-19 14:50:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:46,970 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 1915 transitions. [2021-11-19 14:50:46,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:50:46,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 1915 transitions. [2021-11-19 14:50:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:50:46,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:46,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:50:46,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:47,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:47,183 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:50:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-19 14:50:47,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:47,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211755429] [2021-11-19 14:50:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:47,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:47,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:47,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:47,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:50:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:47,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:50:47,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:47,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:50:47,424 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 14:50:47,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:47,442 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 14:50:47,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:47,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211755429] [2021-11-19 14:50:47,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211755429] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:47,443 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:47,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:50:47,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839505909] [2021-11-19 14:50:47,444 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:47,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:47,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:47,446 INFO L87 Difference]: Start difference. First operand 1813 states and 1915 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:50:51,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:51,124 INFO L93 Difference]: Finished difference Result 2069 states and 2214 transitions. [2021-11-19 14:50:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:51,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 14:50:51,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:51,143 INFO L225 Difference]: With dead ends: 2069 [2021-11-19 14:50:51,144 INFO L226 Difference]: Without dead ends: 2069 [2021-11-19 14:50:51,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:51,146 INFO L933 BasicCegarLoop]: 1354 mSDtfsCounter, 1369 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:51,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1809 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 14:50:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-11-19 14:50:51,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1798. [2021-11-19 14:50:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 960 states have (on average 2.017708333333333) internal successors, (1937), 1789 states have internal predecessors, (1937), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 14:50:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 1959 transitions. [2021-11-19 14:50:51,216 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 1959 transitions. Word has length 5 [2021-11-19 14:50:51,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:51,217 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 1959 transitions. [2021-11-19 14:50:51,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:50:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 1959 transitions. [2021-11-19 14:50:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:50:51,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:51,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:50:51,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:51,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:51,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:50:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-19 14:50:51,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:51,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433273785] [2021-11-19 14:50:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:51,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:51,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:51,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:51,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:50:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:51,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:50:51,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:51,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:50:51,655 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 14:50:51,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:51,738 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 14:50:51,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:51,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433273785] [2021-11-19 14:50:51,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433273785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:51,739 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:51,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:50:51,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806019111] [2021-11-19 14:50:51,740 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:51,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:50:51,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:51,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:50:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:50:51,742 INFO L87 Difference]: Start difference. First operand 1798 states and 1959 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:00,849 INFO L93 Difference]: Finished difference Result 2369 states and 2581 transitions. [2021-11-19 14:51:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 14:51:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:00,862 INFO L225 Difference]: With dead ends: 2369 [2021-11-19 14:51:00,863 INFO L226 Difference]: Without dead ends: 2369 [2021-11-19 14:51:00,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:00,864 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 825 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:00,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 3271 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-11-19 14:51:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2021-11-19 14:51:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1954. [2021-11-19 14:51:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1126 states have (on average 1.992007104795737) internal successors, (2243), 1945 states have internal predecessors, (2243), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 14:51:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2265 transitions. [2021-11-19 14:51:00,919 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2265 transitions. Word has length 5 [2021-11-19 14:51:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:00,919 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 2265 transitions. [2021-11-19 14:51:00,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2265 transitions. [2021-11-19 14:51:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:51:00,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:00,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:51:00,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:01,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:01,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-19 14:51:01,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:01,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766332876] [2021-11-19 14:51:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:01,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:01,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:01,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:01,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:51:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:01,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:51:01,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:01,325 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 14:51:01,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:01,345 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 14:51:01,345 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:01,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766332876] [2021-11-19 14:51:01,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766332876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:01,346 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:01,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:51:01,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466981976] [2021-11-19 14:51:01,347 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:01,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:01,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:01,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:01,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:01,348 INFO L87 Difference]: Start difference. First operand 1954 states and 2265 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:01,525 INFO L93 Difference]: Finished difference Result 3516 states and 4119 transitions. [2021-11-19 14:51:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:01,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 14:51:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:01,568 INFO L225 Difference]: With dead ends: 3516 [2021-11-19 14:51:01,568 INFO L226 Difference]: Without dead ends: 3516 [2021-11-19 14:51:01,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:01,572 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 2754 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:01,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2776 Valid, 4306 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:51:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2021-11-19 14:51:01,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 2899. [2021-11-19 14:51:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2066 states have (on average 1.9719264278799613) internal successors, (4074), 2884 states have internal predecessors, (4074), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4118 transitions. [2021-11-19 14:51:01,669 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4118 transitions. Word has length 6 [2021-11-19 14:51:01,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:01,669 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 4118 transitions. [2021-11-19 14:51:01,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:01,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4118 transitions. [2021-11-19 14:51:01,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:51:01,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:01,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:01,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:01,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:01,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-19 14:51:01,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:01,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304779388] [2021-11-19 14:51:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:01,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:01,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:01,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:01,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:51:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:02,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:51:02,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:02,098 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 14:51:02,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:02,129 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 14:51:02,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:02,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304779388] [2021-11-19 14:51:02,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304779388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:02,130 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:02,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:51:02,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770915355] [2021-11-19 14:51:02,131 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:02,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:02,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:02,132 INFO L87 Difference]: Start difference. First operand 2899 states and 4118 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 14:51:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:02,220 INFO L93 Difference]: Finished difference Result 2839 states and 4032 transitions. [2021-11-19 14:51:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:51:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 11 [2021-11-19 14:51:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:02,239 INFO L225 Difference]: With dead ends: 2839 [2021-11-19 14:51:02,239 INFO L226 Difference]: Without dead ends: 2839 [2021-11-19 14:51:02,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:02,241 INFO L933 BasicCegarLoop]: 1766 mSDtfsCounter, 3472 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:02,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3483 Valid, 1794 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:51:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2021-11-19 14:51:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2839. [2021-11-19 14:51:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2030 states have (on average 1.9645320197044336) internal successors, (3988), 2824 states have internal predecessors, (3988), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 4032 transitions. [2021-11-19 14:51:02,345 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 4032 transitions. Word has length 11 [2021-11-19 14:51:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:02,346 INFO L470 AbstractCegarLoop]: Abstraction has 2839 states and 4032 transitions. [2021-11-19 14:51:02,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 14:51:02,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 4032 transitions. [2021-11-19 14:51:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:51:02,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:02,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:02,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:02,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:02,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:02,562 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-19 14:51:02,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:02,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262115209] [2021-11-19 14:51:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:02,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:02,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:02,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:02,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:51:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:51:02,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:02,797 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 14:51:02,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:02,834 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 14:51:02,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:02,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262115209] [2021-11-19 14:51:02,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262115209] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:02,835 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:02,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:51:02,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145991366] [2021-11-19 14:51:02,836 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:02,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:51:02,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:51:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:51:02,837 INFO L87 Difference]: Start difference. First operand 2839 states and 4032 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 14:51:02,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:02,945 INFO L93 Difference]: Finished difference Result 2811 states and 3976 transitions. [2021-11-19 14:51:02,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:02,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 14:51:02,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:02,963 INFO L225 Difference]: With dead ends: 2811 [2021-11-19 14:51:02,963 INFO L226 Difference]: Without dead ends: 2811 [2021-11-19 14:51:02,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:51:02,965 INFO L933 BasicCegarLoop]: 1721 mSDtfsCounter, 1707 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:02,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 3491 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:51:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-11-19 14:51:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2809. [2021-11-19 14:51:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2014 states have (on average 1.951340615690169) internal successors, (3930), 2794 states have internal predecessors, (3930), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3974 transitions. [2021-11-19 14:51:03,054 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3974 transitions. Word has length 13 [2021-11-19 14:51:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:03,054 INFO L470 AbstractCegarLoop]: Abstraction has 2809 states and 3974 transitions. [2021-11-19 14:51:03,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 14:51:03,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3974 transitions. [2021-11-19 14:51:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:51:03,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:03,056 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] [2021-11-19 14:51:03,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:03,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:03,267 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:03,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-19 14:51:03,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:03,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531948117] [2021-11-19 14:51:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:03,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:03,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:03,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:03,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:51:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:03,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:51:03,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:03,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:51:03,566 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 14:51:03,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:03,665 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 14:51:03,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:03,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531948117] [2021-11-19 14:51:03,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531948117] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:03,666 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:03,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:51:03,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195128618] [2021-11-19 14:51:03,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:03,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:03,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:03,668 INFO L87 Difference]: Start difference. First operand 2809 states and 3974 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 14:51:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:08,164 INFO L93 Difference]: Finished difference Result 4467 states and 6106 transitions. [2021-11-19 14:51:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:51:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-19 14:51:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:08,184 INFO L225 Difference]: With dead ends: 4467 [2021-11-19 14:51:08,184 INFO L226 Difference]: Without dead ends: 4467 [2021-11-19 14:51:08,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:51:08,185 INFO L933 BasicCegarLoop]: 1071 mSDtfsCounter, 3382 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:08,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3390 Valid, 2422 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-19 14:51:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2021-11-19 14:51:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 2805. [2021-11-19 14:51:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2014 states have (on average 1.9473684210526316) internal successors, (3922), 2790 states have internal predecessors, (3922), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3966 transitions. [2021-11-19 14:51:08,261 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3966 transitions. Word has length 27 [2021-11-19 14:51:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:08,261 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3966 transitions. [2021-11-19 14:51:08,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 14:51:08,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3966 transitions. [2021-11-19 14:51:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:51:08,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:08,263 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] [2021-11-19 14:51:08,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:08,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:08,475 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-19 14:51:08,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:08,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033194164] [2021-11-19 14:51:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:08,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:08,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:08,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:08,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:51:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:08,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:51:08,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:08,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:51:08,919 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 14:51:08,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:09,330 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 14:51:09,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:09,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033194164] [2021-11-19 14:51:09,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033194164] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:09,331 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:09,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:51:09,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664212157] [2021-11-19 14:51:09,331 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:09,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:51:09,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:51:09,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:51:09,332 INFO L87 Difference]: Start difference. First operand 2805 states and 3966 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 14:51:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:22,994 INFO L93 Difference]: Finished difference Result 3769 states and 4989 transitions. [2021-11-19 14:51:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:51:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 27 [2021-11-19 14:51:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:23,012 INFO L225 Difference]: With dead ends: 3769 [2021-11-19 14:51:23,012 INFO L226 Difference]: Without dead ends: 3769 [2021-11-19 14:51:23,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:51:23,013 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 2891 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:23,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2891 Valid, 3614 Invalid, 3086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3054 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2021-11-19 14:51:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2021-11-19 14:51:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 2801. [2021-11-19 14:51:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2014 states have (on average 1.9433962264150944) internal successors, (3914), 2786 states have internal predecessors, (3914), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3958 transitions. [2021-11-19 14:51:23,092 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3958 transitions. Word has length 27 [2021-11-19 14:51:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:23,093 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3958 transitions. [2021-11-19 14:51:23,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 14:51:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3958 transitions. [2021-11-19 14:51:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-19 14:51:23,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:23,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:23,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:23,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:23,307 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:23,308 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-19 14:51:23,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:23,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579326302] [2021-11-19 14:51:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:23,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:23,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:23,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:23,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:51:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:23,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:51:23,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:23,611 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 14:51:23,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:23,718 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 14:51:23,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:23,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579326302] [2021-11-19 14:51:23,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579326302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:23,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:23,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:51:23,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247995964] [2021-11-19 14:51:23,720 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:23,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:23,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:23,721 INFO L87 Difference]: Start difference. First operand 2801 states and 3958 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 14:51:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:23,795 INFO L93 Difference]: Finished difference Result 2789 states and 3938 transitions. [2021-11-19 14:51:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:23,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-19 14:51:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:23,806 INFO L225 Difference]: With dead ends: 2789 [2021-11-19 14:51:23,806 INFO L226 Difference]: Without dead ends: 2789 [2021-11-19 14:51:23,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:51:23,808 INFO L933 BasicCegarLoop]: 1715 mSDtfsCounter, 1683 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:23,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 3441 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:51:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-11-19 14:51:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2021-11-19 14:51:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2002 states have (on average 1.945054945054945) internal successors, (3894), 2774 states have internal predecessors, (3894), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3938 transitions. [2021-11-19 14:51:23,863 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3938 transitions. Word has length 42 [2021-11-19 14:51:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:23,863 INFO L470 AbstractCegarLoop]: Abstraction has 2789 states and 3938 transitions. [2021-11-19 14:51:23,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 14:51:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3938 transitions. [2021-11-19 14:51:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 14:51:23,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:23,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:23,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:24,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:24,079 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:24,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-19 14:51:24,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:24,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168412627] [2021-11-19 14:51:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:24,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:24,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:24,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:24,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:51:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:24,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:51:24,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:24,697 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 14:51:24,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:25,075 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 14:51:25,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:25,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168412627] [2021-11-19 14:51:25,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168412627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:25,076 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:25,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:51:25,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333620584] [2021-11-19 14:51:25,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:25,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:51:25,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:51:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:25,078 INFO L87 Difference]: Start difference. First operand 2789 states and 3938 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 14:51:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:25,354 INFO L93 Difference]: Finished difference Result 2978 states and 3973 transitions. [2021-11-19 14:51:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:51:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-19 14:51:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:25,364 INFO L225 Difference]: With dead ends: 2978 [2021-11-19 14:51:25,364 INFO L226 Difference]: Without dead ends: 2978 [2021-11-19 14:51:25,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:25,365 INFO L933 BasicCegarLoop]: 1793 mSDtfsCounter, 455 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:25,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 3382 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:51:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2021-11-19 14:51:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2605. [2021-11-19 14:51:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 1818 states have (on average 1.9466446644664466) internal successors, (3539), 2590 states have internal predecessors, (3539), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3583 transitions. [2021-11-19 14:51:25,445 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3583 transitions. Word has length 50 [2021-11-19 14:51:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:25,446 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 3583 transitions. [2021-11-19 14:51:25,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 14:51:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3583 transitions. [2021-11-19 14:51:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 14:51:25,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:25,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:25,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:25,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:25,653 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-19 14:51:25,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:25,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669897227] [2021-11-19 14:51:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:25,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:25,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:25,656 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:25,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:51:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:26,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:51:26,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:26,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:51:26,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:51:26,671 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:51:26,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-19 14:51:26,679 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:51:26,679 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 23 treesize of output 19 [2021-11-19 14:51:26,720 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 14:51:26,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:31,732 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 14:51:31,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:31,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669897227] [2021-11-19 14:51:31,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669897227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:31,733 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:31,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:51:31,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270279943] [2021-11-19 14:51:31,734 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:31,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:51:31,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:51:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:51:31,735 INFO L87 Difference]: Start difference. First operand 2605 states and 3583 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 14:51:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:43,367 INFO L93 Difference]: Finished difference Result 4003 states and 5207 transitions. [2021-11-19 14:51:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:51:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 53 [2021-11-19 14:51:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:43,383 INFO L225 Difference]: With dead ends: 4003 [2021-11-19 14:51:43,383 INFO L226 Difference]: Without dead ends: 4003 [2021-11-19 14:51:43,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 14:51:43,384 INFO L933 BasicCegarLoop]: 1235 mSDtfsCounter, 1925 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 5514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2690 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:43,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1942 Valid, 3673 Invalid, 5514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2749 Invalid, 0 Unknown, 2690 Unchecked, 11.5s Time] [2021-11-19 14:51:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2021-11-19 14:51:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 2700. [2021-11-19 14:51:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 1945 states have (on average 1.906426735218509) internal successors, (3708), 2682 states have internal predecessors, (3708), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 17 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:51:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3758 transitions. [2021-11-19 14:51:43,438 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3758 transitions. Word has length 53 [2021-11-19 14:51:43,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:43,439 INFO L470 AbstractCegarLoop]: Abstraction has 2700 states and 3758 transitions. [2021-11-19 14:51:43,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 14:51:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3758 transitions. [2021-11-19 14:51:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:51:43,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:43,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:43,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:43,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:43,654 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:43,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:43,654 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-19 14:51:43,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:43,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749013816] [2021-11-19 14:51:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:43,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:43,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:43,656 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:43,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:51:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:43,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:51:43,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:44,157 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 14:51:44,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:44,234 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 8 treesize of output 6 [2021-11-19 14:51:44,590 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 14:51:44,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:44,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749013816] [2021-11-19 14:51:44,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749013816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:44,591 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:44,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:51:44,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874437500] [2021-11-19 14:51:44,591 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:44,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:51:44,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:51:44,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:51:44,592 INFO L87 Difference]: Start difference. First operand 2700 states and 3758 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 14:51:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:48,851 INFO L93 Difference]: Finished difference Result 2698 states and 3754 transitions. [2021-11-19 14:51:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:48,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 55 [2021-11-19 14:51:48,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:48,858 INFO L225 Difference]: With dead ends: 2698 [2021-11-19 14:51:48,858 INFO L226 Difference]: Without dead ends: 2698 [2021-11-19 14:51:48,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:51:48,859 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 2424 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:48,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2435 Valid, 2112 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-19 14:51:48,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-19 14:51:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2021-11-19 14:51:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 1945 states have (on average 1.9043701799485862) internal successors, (3704), 2680 states have internal predecessors, (3704), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 17 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:51:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 3754 transitions. [2021-11-19 14:51:48,899 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 3754 transitions. Word has length 55 [2021-11-19 14:51:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:48,900 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 3754 transitions. [2021-11-19 14:51:48,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 14:51:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 3754 transitions. [2021-11-19 14:51:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 14:51:48,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:48,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:48,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:49,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:49,118 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-19 14:51:49,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:49,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506999109] [2021-11-19 14:51:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:49,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:49,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:49,120 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:49,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:51:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:49,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:51:49,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:49,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:51:49,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 14:51:49,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 14:51:49,523 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 14:51:49,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:49,634 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 14:51:49,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:49,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506999109] [2021-11-19 14:51:49,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506999109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:49,634 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:49,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:51:49,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023152827] [2021-11-19 14:51:49,635 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:49,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:51:49,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:51:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:51:49,636 INFO L87 Difference]: Start difference. First operand 2698 states and 3754 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 14:51:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:54,311 INFO L93 Difference]: Finished difference Result 2697 states and 3752 transitions. [2021-11-19 14:51:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:51:54,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2021-11-19 14:51:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:54,317 INFO L225 Difference]: With dead ends: 2697 [2021-11-19 14:51:54,317 INFO L226 Difference]: Without dead ends: 2697 [2021-11-19 14:51:54,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:51:54,318 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 4 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:54,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4310 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-19 14:51:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2021-11-19 14:51:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2697. [2021-11-19 14:51:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 1945 states have (on average 1.9033419023136247) internal successors, (3702), 2679 states have internal predecessors, (3702), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 17 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:51:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 3752 transitions. [2021-11-19 14:51:54,364 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 3752 transitions. Word has length 58 [2021-11-19 14:51:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:54,364 INFO L470 AbstractCegarLoop]: Abstraction has 2697 states and 3752 transitions. [2021-11-19 14:51:54,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 14:51:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 3752 transitions. [2021-11-19 14:51:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 14:51:54,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:54,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:54,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:54,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:54,579 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:51:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-19 14:51:54,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:54,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842469834] [2021-11-19 14:51:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:54,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:54,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:54,582 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:54,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:51:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:54,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:51:54,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:54,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:51:54,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 14:51:55,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:51:55,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 14:51:55,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 14:51:55,097 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 14:51:55,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:55,383 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 14:51:55,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:55,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842469834] [2021-11-19 14:51:55,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842469834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:55,384 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:55,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:51:55,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604178053] [2021-11-19 14:51:55,385 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:55,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:51:55,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:55,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:51:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:51:55,386 INFO L87 Difference]: Start difference. First operand 2697 states and 3752 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 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 14:52:09,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:09,595 INFO L93 Difference]: Finished difference Result 2696 states and 3750 transitions. [2021-11-19 14:52:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:52:09,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 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 58 [2021-11-19 14:52:09,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:09,601 INFO L225 Difference]: With dead ends: 2696 [2021-11-19 14:52:09,601 INFO L226 Difference]: Without dead ends: 2696 [2021-11-19 14:52:09,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:52:09,603 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 3 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:09,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5115 Invalid, 3313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2021-11-19 14:52:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-11-19 14:52:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2696. [2021-11-19 14:52:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 1943 states have (on average 1.9042717447246527) internal successors, (3700), 2678 states have internal predecessors, (3700), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 17 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:52:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 3750 transitions. [2021-11-19 14:52:09,639 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 3750 transitions. Word has length 58 [2021-11-19 14:52:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:09,639 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 3750 transitions. [2021-11-19 14:52:09,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 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 14:52:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 3750 transitions. [2021-11-19 14:52:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 14:52:09,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:09,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:09,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:09,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:09,854 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:52:09,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:09,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601854, now seen corresponding path program 1 times [2021-11-19 14:52:09,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:09,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166621203] [2021-11-19 14:52:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:09,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:09,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:09,859 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:09,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:52:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:10,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:52:10,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:10,283 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 14:52:10,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:10,448 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 14:52:10,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:10,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166621203] [2021-11-19 14:52:10,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166621203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:52:10,448 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:52:10,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:52:10,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990208290] [2021-11-19 14:52:10,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:52:10,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:52:10,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:52:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:52:10,450 INFO L87 Difference]: Start difference. First operand 2696 states and 3750 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:52:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:10,590 INFO L93 Difference]: Finished difference Result 2706 states and 3767 transitions. [2021-11-19 14:52:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:52:10,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2021-11-19 14:52:10,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:10,597 INFO L225 Difference]: With dead ends: 2706 [2021-11-19 14:52:10,597 INFO L226 Difference]: Without dead ends: 2706 [2021-11-19 14:52:10,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:52:10,598 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 9 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:10,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 5039 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:52:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-11-19 14:52:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2706. [2021-11-19 14:52:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 1951 states have (on average 1.902614044079959) internal successors, (3712), 2687 states have internal predecessors, (3712), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 17 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-19 14:52:10,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3767 transitions. [2021-11-19 14:52:10,646 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3767 transitions. Word has length 66 [2021-11-19 14:52:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:10,647 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 3767 transitions. [2021-11-19 14:52:10,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:52:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3767 transitions. [2021-11-19 14:52:10,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 14:52:10,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:10,648 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:10,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:10,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:10,861 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:52:10,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash 67067806, now seen corresponding path program 1 times [2021-11-19 14:52:10,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:10,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772798306] [2021-11-19 14:52:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:10,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:10,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:10,863 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:10,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:52:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:11,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:52:11,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:11,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:11,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:11,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772798306] [2021-11-19 14:52:11,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772798306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:11,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1021287319] [2021-11-19 14:52:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:11,448 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:52:11,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:52:11,449 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:52:11,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 14:52:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:11,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:52:11,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:11,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:12,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1021287319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:12,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623562546] [2021-11-19 14:52:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:12,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:52:12,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:52:12,048 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:52:12,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 14:52:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:12,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:52:12,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:12,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:12,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623562546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:12,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:52:12,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 14:52:12,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087149528] [2021-11-19 14:52:12,677 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:52:12,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:52:12,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:52:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:52:12,679 INFO L87 Difference]: Start difference. First operand 2706 states and 3767 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 14:52:13,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:13,230 INFO L93 Difference]: Finished difference Result 2720 states and 3788 transitions. [2021-11-19 14:52:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:52:13,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2021-11-19 14:52:13,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:13,238 INFO L225 Difference]: With dead ends: 2720 [2021-11-19 14:52:13,238 INFO L226 Difference]: Without dead ends: 2714 [2021-11-19 14:52:13,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:52:13,239 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 33 mSDsluCounter, 6718 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8401 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:13,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8401 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:52:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-11-19 14:52:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2712. [2021-11-19 14:52:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 1957 states have (on average 1.9003576903423607) internal successors, (3719), 2693 states have internal predecessors, (3719), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 17 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-19 14:52:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 3774 transitions. [2021-11-19 14:52:13,281 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 3774 transitions. Word has length 68 [2021-11-19 14:52:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:13,281 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 3774 transitions. [2021-11-19 14:52:13,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 14:52:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 3774 transitions. [2021-11-19 14:52:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 14:52:13,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:13,283 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:13,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-19 14:52:13,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:13,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-19 14:52:13,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:52:13,908 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:52:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:13,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1089755102, now seen corresponding path program 2 times [2021-11-19 14:52:13,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:13,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781432488] [2021-11-19 14:52:13,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:52:13,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:13,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:13,910 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:13,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:52:14,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:52:14,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:14,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:52:14,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:14,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:15,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:15,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781432488] [2021-11-19 14:52:15,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781432488] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:15,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [673167962] [2021-11-19 14:52:15,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:52:15,204 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:52:15,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:52:15,208 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:52:15,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 14:52:16,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:52:16,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:16,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:52:16,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:16,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:16,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [673167962] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:16,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980644762] [2021-11-19 14:52:16,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:52:16,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:52:16,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:52:16,676 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:52:16,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-19 14:52:23,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:52:23,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:23,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:52:23,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:23,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:24,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980644762] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:24,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:52:24,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 19 [2021-11-19 14:52:24,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766364975] [2021-11-19 14:52:24,112 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:52:24,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:52:24,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:52:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:52:24,114 INFO L87 Difference]: Start difference. First operand 2712 states and 3774 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:52:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:25,826 INFO L93 Difference]: Finished difference Result 2738 states and 3840 transitions. [2021-11-19 14:52:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 14:52:25,826 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2021-11-19 14:52:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:25,834 INFO L225 Difference]: With dead ends: 2738 [2021-11-19 14:52:25,834 INFO L226 Difference]: Without dead ends: 2732 [2021-11-19 14:52:25,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=387, Invalid=735, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:52:25,836 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 89 mSDsluCounter, 13440 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 15126 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:25,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 15126 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:52:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-19 14:52:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2724. [2021-11-19 14:52:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 1969 states have (on average 1.8963941086846114) internal successors, (3734), 2705 states have internal predecessors, (3734), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 17 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-19 14:52:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3789 transitions. [2021-11-19 14:52:25,881 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3789 transitions. Word has length 72 [2021-11-19 14:52:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:25,882 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3789 transitions. [2021-11-19 14:52:25,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:52:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3789 transitions. [2021-11-19 14:52:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:52:25,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:25,883 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:25,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:26,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:26,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-19 14:52:26,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:26,489 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-19 14:52:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:26,489 INFO L85 PathProgramCache]: Analyzing trace with hash -204740514, now seen corresponding path program 3 times [2021-11-19 14:52:26,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:26,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064595743] [2021-11-19 14:52:26,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:52:26,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:26,491 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:26,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:52:27,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 14:52:27,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:52:27,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:27,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:28,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:28,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064595743] [2021-11-19 14:52:28,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064595743] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:28,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1225163129] [2021-11-19 14:52:28,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:52:28,896 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:52:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:52:28,897 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:52:28,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-19 14:52:34,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 14:52:34,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:34,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:52:34,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:34,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:35,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1225163129] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:35,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697112988] [2021-11-19 14:52:35,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:52:35,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:52:35,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:52:35,480 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:52:35,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa25e7a0-529b-477a-923e-dd385282189a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process