./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P --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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:54:52,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:54:52,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:54:52,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:54:52,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:54:52,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:54:52,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:54:52,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:54:52,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:54:52,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:54:52,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:54:52,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:54:52,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:54:52,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:54:52,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:54:52,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:54:52,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:54:52,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:54:52,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:54:52,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:54:52,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:54:52,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:54:52,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:54:52,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:54:53,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:54:53,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:54:53,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:54:53,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:54:53,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:54:53,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:54:53,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:54:53,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:54:53,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:54:53,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:54:53,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:54:53,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:54:53,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:54:53,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:54:53,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:54:53,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:54:53,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:54:53,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:54:53,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:54:53,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:54:53,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:54:53,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:54:53,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:54:53,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:54:53,067 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:54:53,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:54:53,067 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:54:53,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:54:53,068 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:54:53,069 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:54:53,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:54:53,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:54:53,070 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:54:53,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:54:53,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:54:53,071 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:54:53,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:54:53,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:54:53,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:54:53,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:54:53,073 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:54:53,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:54:53,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:54:53,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:54:53,075 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:54:53,075 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:54:53,076 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:54:53,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:54:53,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:54:53,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:54:53,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:54:53,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:54:53,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:54:53,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:54:53,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:54:53,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:54:53,079 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:54:53,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:54:53,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:54:53,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:54:53,080 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2021-11-21 01:54:53,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:54:53,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:54:53,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:54:53,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:54:53,387 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:54:53,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-21 01:54:53,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data/252f036cf/602d80a9453045f9a6767f5bfdcc55af/FLAGc9ca7448a [2021-11-21 01:54:54,132 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:54:54,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-21 01:54:54,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data/252f036cf/602d80a9453045f9a6767f5bfdcc55af/FLAGc9ca7448a [2021-11-21 01:54:54,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data/252f036cf/602d80a9453045f9a6767f5bfdcc55af [2021-11-21 01:54:54,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:54:54,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:54:54,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:54:54,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:54:54,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:54:54,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:54" (1/1) ... [2021-11-21 01:54:54,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83def25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:54, skipping insertion in model container [2021-11-21 01:54:54,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:54" (1/1) ... [2021-11-21 01:54:54,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:54:54,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:54:54,961 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-21 01:54:55,122 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-21 01:54:55,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:54:55,166 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) [2021-11-21 01:54:55,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e62353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:55, skipping insertion in model container [2021-11-21 01:54:55,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:54:55,167 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:54:55,169 INFO L158 Benchmark]: Toolchain (without parser) took 847.92ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 60.2MB in the end (delta: 1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:54:55,170 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory was 51.7MB in the beginning and 51.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:54:55,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 843.56ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 60.2MB in the end (delta: 1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:54:55,174 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 98.6MB. Free memory was 51.7MB in the beginning and 51.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 843.56ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 60.2MB in the end (delta: 1.6MB). Peak memory consumption was 10.5MB. 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P --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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:54:57,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:54:57,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:54:57,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:54:57,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:54:57,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:54:57,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:54:57,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:54:57,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:54:57,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:54:57,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:54:57,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:54:57,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:54:57,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:54:57,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:54:57,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:54:57,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:54:57,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:54:57,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:54:57,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:54:57,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:54:57,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:54:57,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:54:57,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:54:57,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:54:57,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:54:57,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:54:57,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:54:57,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:54:57,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:54:57,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:54:57,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:54:57,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:54:57,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:54:57,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:54:57,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:54:57,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:54:57,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:54:57,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:54:57,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:54:57,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:54:57,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:54:57,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:54:57,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:54:57,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:54:57,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:54:57,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:54:57,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:54:57,525 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:54:57,526 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:54:57,526 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:54:57,526 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:54:57,527 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:54:57,527 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:54:57,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:54:57,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:54:57,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:54:57,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:54:57,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:54:57,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:54:57,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:54:57,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:54:57,530 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:54:57,530 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:54:57,530 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:54:57,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:54:57,531 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:54:57,531 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:54:57,531 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:54:57,531 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:54:57,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:54:57,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:54:57,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:54:57,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:54:57,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:54:57,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:54:57,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:54:57,533 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:54:57,534 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:54:57,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:54:57,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:54:57,534 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2021-11-21 01:54:57,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:54:57,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:54:57,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:54:57,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:54:57,975 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:54:57,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-21 01:54:58,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data/bd25745c1/40e0c8e7375244c3a128435ad0854084/FLAG062181bfc [2021-11-21 01:54:58,691 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:54:58,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-21 01:54:58,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data/bd25745c1/40e0c8e7375244c3a128435ad0854084/FLAG062181bfc [2021-11-21 01:54:58,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/data/bd25745c1/40e0c8e7375244c3a128435ad0854084 [2021-11-21 01:54:58,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:54:58,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:54:58,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:54:58,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:54:58,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:54:58,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45402845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58, skipping insertion in model container [2021-11-21 01:54:58,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:54:58,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:54:59,436 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-21 01:54:59,642 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-21 01:54:59,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:54:59,666 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:54:59,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:54:59,708 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-21 01:54:59,847 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-21 01:54:59,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:54:59,858 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:54:59,907 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-21 01:55:00,045 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_ce1e8d51-09d8-48fb-be8a-db19339d2f12/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-21 01:55:00,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:55:00,113 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:55:00,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00 WrapperNode [2021-11-21 01:55:00,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:55:00,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:55:00,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:55:00,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:55:00,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,244 INFO L137 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1414 [2021-11-21 01:55:00,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:55:00,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:55:00,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:55:00,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:55:00,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:55:00,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:55:00,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:55:00,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:55:00,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (1/1) ... [2021-11-21 01:55:00,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:55:00,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:55:00,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:55:00,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:55:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 01:55:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:55:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:55:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:55:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:55:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:55:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:55:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:55:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:55:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:55:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:55:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:55:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:55:00,785 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:55:00,786 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:55:00,796 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:55:07,205 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:55:07,242 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:55:07,242 INFO L301 CfgBuilder]: Removed 83 assume(true) statements. [2021-11-21 01:55:07,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:07 BoogieIcfgContainer [2021-11-21 01:55:07,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:55:07,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:55:07,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:55:07,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:55:07,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:54:58" (1/3) ... [2021-11-21 01:55:07,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6097c0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:07, skipping insertion in model container [2021-11-21 01:55:07,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:00" (2/3) ... [2021-11-21 01:55:07,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6097c0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:07, skipping insertion in model container [2021-11-21 01:55:07,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:07" (3/3) ... [2021-11-21 01:55:07,255 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2021-11-21 01:55:07,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:55:07,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 729 error locations. [2021-11-21 01:55:07,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:55:07,310 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 [2021-11-21 01:55:07,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 729 error locations. [2021-11-21 01:55:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 1456 states, 719 states have (on average 2.2378303198887344) internal successors, (1609), 1447 states have internal predecessors, (1609), 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) [2021-11-21 01:55:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:55:07,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:07,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:55:07,384 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:07,391 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-21 01:55:07,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:07,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34143152] [2021-11-21 01:55:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:07,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:07,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:07,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:07,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:55:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:07,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:55:07,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:07,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:07,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:07,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34143152] [2021-11-21 01:55:07,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34143152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:07,639 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:07,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:55:07,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803832887] [2021-11-21 01:55:07,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:07,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:55:07,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:55:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:55:07,689 INFO L87 Difference]: Start difference. First operand has 1456 states, 719 states have (on average 2.2378303198887344) internal successors, (1609), 1447 states have internal predecessors, (1609), 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) [2021-11-21 01:55:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:07,785 INFO L93 Difference]: Finished difference Result 1438 states and 1521 transitions. [2021-11-21 01:55:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:55:07,787 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 [2021-11-21 01:55:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:07,818 INFO L225 Difference]: With dead ends: 1438 [2021-11-21 01:55:07,818 INFO L226 Difference]: Without dead ends: 1436 [2021-11-21 01:55:07,820 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 [2021-11-21 01:55:07,823 INFO L933 BasicCegarLoop]: 1521 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, 1521 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 [2021-11-21 01:55:07,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:55:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-11-21 01:55:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2021-11-21 01:55:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 710 states have (on average 2.108450704225352) internal successors, (1497), 1427 states have internal predecessors, (1497), 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) [2021-11-21 01:55:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1519 transitions. [2021-11-21 01:55:07,956 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1519 transitions. Word has length 5 [2021-11-21 01:55:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:07,957 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 1519 transitions. [2021-11-21 01:55:07,957 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) [2021-11-21 01:55:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1519 transitions. [2021-11-21 01:55:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:55:07,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:07,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:55:07,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:55:08,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:08,173 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-21 01:55:08,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:08,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150816861] [2021-11-21 01:55:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:08,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:08,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:08,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:08,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:55:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:08,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:55:08,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:08,402 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 [2021-11-21 01:55:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:08,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:08,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:08,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150816861] [2021-11-21 01:55:08,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150816861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:08,454 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:08,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:55:08,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32731558] [2021-11-21 01:55:08,456 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:08,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:55:08,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:08,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:55:08,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:55:08,459 INFO L87 Difference]: Start difference. First operand 1436 states and 1519 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) [2021-11-21 01:55:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:11,307 INFO L93 Difference]: Finished difference Result 1692 states and 1818 transitions. [2021-11-21 01:55:11,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:55:11,308 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 [2021-11-21 01:55:11,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:11,320 INFO L225 Difference]: With dead ends: 1692 [2021-11-21 01:55:11,320 INFO L226 Difference]: Without dead ends: 1692 [2021-11-21 01:55:11,320 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 [2021-11-21 01:55:11,322 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 1369 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:11,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1221 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-21 01:55:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-11-21 01:55:11,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1421. [2021-11-21 01:55:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 786 states have (on average 1.960559796437659) internal successors, (1541), 1412 states have internal predecessors, (1541), 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) [2021-11-21 01:55:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1563 transitions. [2021-11-21 01:55:11,381 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1563 transitions. Word has length 5 [2021-11-21 01:55:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:11,382 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 1563 transitions. [2021-11-21 01:55:11,383 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) [2021-11-21 01:55:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1563 transitions. [2021-11-21 01:55:11,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:55:11,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:11,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:55:11,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:11,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:11,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-21 01:55:11,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:11,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113568838] [2021-11-21 01:55:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:11,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:11,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:11,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:11,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:55:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:11,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:55:11,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:11,752 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 [2021-11-21 01:55:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:11,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:11,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:11,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113568838] [2021-11-21 01:55:11,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113568838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:11,847 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:11,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:55:11,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766173984] [2021-11-21 01:55:11,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:11,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:11,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:11,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:11,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:11,849 INFO L87 Difference]: Start difference. First operand 1421 states and 1563 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) [2021-11-21 01:55:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:19,268 INFO L93 Difference]: Finished difference Result 1994 states and 2186 transitions. [2021-11-21 01:55:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:19,269 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 [2021-11-21 01:55:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:19,282 INFO L225 Difference]: With dead ends: 1994 [2021-11-21 01:55:19,282 INFO L226 Difference]: Without dead ends: 1994 [2021-11-21 01:55:19,283 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 [2021-11-21 01:55:19,284 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 827 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:19,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2482 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-21 01:55:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-11-21 01:55:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1577. [2021-11-21 01:55:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 952 states have (on average 1.940126050420168) internal successors, (1847), 1568 states have internal predecessors, (1847), 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) [2021-11-21 01:55:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 1869 transitions. [2021-11-21 01:55:19,333 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 1869 transitions. Word has length 5 [2021-11-21 01:55:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:19,333 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 1869 transitions. [2021-11-21 01:55:19,334 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) [2021-11-21 01:55:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 1869 transitions. [2021-11-21 01:55:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:55:19,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:19,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:55:19,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:19,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:19,551 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-21 01:55:19,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:19,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622804931] [2021-11-21 01:55:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:19,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:19,554 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:19,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:55:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:19,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:55:19,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:19,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:19,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:19,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622804931] [2021-11-21 01:55:19,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622804931] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:19,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:19,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:55:19,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147326675] [2021-11-21 01:55:19,720 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:19,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:19,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:19,721 INFO L87 Difference]: Start difference. First operand 1577 states and 1869 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) [2021-11-21 01:55:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:19,906 INFO L93 Difference]: Finished difference Result 3139 states and 3723 transitions. [2021-11-21 01:55:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:19,907 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 [2021-11-21 01:55:19,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:19,925 INFO L225 Difference]: With dead ends: 3139 [2021-11-21 01:55:19,925 INFO L226 Difference]: Without dead ends: 3139 [2021-11-21 01:55:19,925 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 [2021-11-21 01:55:19,927 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 2754 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 3121 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 [2021-11-21 01:55:19,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2776 Valid, 3121 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:55:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2021-11-21 01:55:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2522. [2021-11-21 01:55:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 1892 states have (on average 1.9439746300211416) internal successors, (3678), 2507 states have internal predecessors, (3678), 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) [2021-11-21 01:55:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 3722 transitions. [2021-11-21 01:55:20,014 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 3722 transitions. Word has length 6 [2021-11-21 01:55:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:20,015 INFO L470 AbstractCegarLoop]: Abstraction has 2522 states and 3722 transitions. [2021-11-21 01:55:20,015 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) [2021-11-21 01:55:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 3722 transitions. [2021-11-21 01:55:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:55:20,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:20,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:55:20,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:20,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:20,228 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:20,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:20,229 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-21 01:55:20,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:20,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811858854] [2021-11-21 01:55:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:20,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:20,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:20,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:20,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:55:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:20,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:55:20,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:20,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:20,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:20,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811858854] [2021-11-21 01:55:20,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811858854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:20,448 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:20,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:55:20,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991217297] [2021-11-21 01:55:20,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:20,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:20,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:20,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:20,450 INFO L87 Difference]: Start difference. First operand 2522 states and 3722 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) [2021-11-21 01:55:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:20,498 INFO L93 Difference]: Finished difference Result 2462 states and 3636 transitions. [2021-11-21 01:55:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:55:20,499 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 [2021-11-21 01:55:20,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:20,516 INFO L225 Difference]: With dead ends: 2462 [2021-11-21 01:55:20,517 INFO L226 Difference]: Without dead ends: 2462 [2021-11-21 01:55:20,517 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 [2021-11-21 01:55:20,518 INFO L933 BasicCegarLoop]: 1370 mSDtfsCounter, 1340 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:20,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 1426 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:55:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-11-21 01:55:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2462. [2021-11-21 01:55:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 1856 states have (on average 1.9353448275862069) internal successors, (3592), 2447 states have internal predecessors, (3592), 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) [2021-11-21 01:55:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3636 transitions. [2021-11-21 01:55:20,594 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3636 transitions. Word has length 11 [2021-11-21 01:55:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:20,595 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 3636 transitions. [2021-11-21 01:55:20,595 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) [2021-11-21 01:55:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3636 transitions. [2021-11-21 01:55:20,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:55:20,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:20,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:55:20,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:20,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:20,812 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-21 01:55:20,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:20,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518535121] [2021-11-21 01:55:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:20,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:20,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:20,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:20,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:55:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:21,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:55:21,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:21,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:21,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:21,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518535121] [2021-11-21 01:55:21,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518535121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:21,083 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:21,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 01:55:21,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315789245] [2021-11-21 01:55:21,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:21,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:55:21,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:55:21,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:55:21,085 INFO L87 Difference]: Start difference. First operand 2462 states and 3636 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) [2021-11-21 01:55:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:21,221 INFO L93 Difference]: Finished difference Result 2434 states and 3580 transitions. [2021-11-21 01:55:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:21,221 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 [2021-11-21 01:55:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:21,235 INFO L225 Difference]: With dead ends: 2434 [2021-11-21 01:55:21,235 INFO L226 Difference]: Without dead ends: 2434 [2021-11-21 01:55:21,235 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 [2021-11-21 01:55:21,236 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 2612 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:21,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2623 Valid, 2671 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:55:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-11-21 01:55:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2432. [2021-11-21 01:55:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 1840 states have (on average 1.9206521739130435) internal successors, (3534), 2417 states have internal predecessors, (3534), 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) [2021-11-21 01:55:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3578 transitions. [2021-11-21 01:55:21,297 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3578 transitions. Word has length 13 [2021-11-21 01:55:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:21,298 INFO L470 AbstractCegarLoop]: Abstraction has 2432 states and 3578 transitions. [2021-11-21 01:55:21,298 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) [2021-11-21 01:55:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3578 transitions. [2021-11-21 01:55:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:55:21,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:21,299 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] [2021-11-21 01:55:21,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:21,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:21,511 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:21,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:21,512 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-21 01:55:21,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:21,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942367842] [2021-11-21 01:55:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:21,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:21,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:21,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:21,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:55:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:21,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:55:21,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:21,672 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 [2021-11-21 01:55:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:21,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:21,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:21,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942367842] [2021-11-21 01:55:21,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942367842] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:21,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:21,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:55:21,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020114627] [2021-11-21 01:55:21,882 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:21,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:21,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:21,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:21,884 INFO L87 Difference]: Start difference. First operand 2432 states and 3578 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) [2021-11-21 01:55:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:25,339 INFO L93 Difference]: Finished difference Result 3738 states and 5340 transitions. [2021-11-21 01:55:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:25,339 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 [2021-11-21 01:55:25,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:25,358 INFO L225 Difference]: With dead ends: 3738 [2021-11-21 01:55:25,358 INFO L226 Difference]: Without dead ends: 3738 [2021-11-21 01:55:25,358 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 [2021-11-21 01:55:25,359 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 3015 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3023 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:25,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3023 Valid, 1552 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-21 01:55:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2021-11-21 01:55:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2428. [2021-11-21 01:55:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1840 states have (on average 1.916304347826087) internal successors, (3526), 2413 states have internal predecessors, (3526), 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) [2021-11-21 01:55:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3570 transitions. [2021-11-21 01:55:25,457 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3570 transitions. Word has length 27 [2021-11-21 01:55:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:25,457 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 3570 transitions. [2021-11-21 01:55:25,458 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) [2021-11-21 01:55:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3570 transitions. [2021-11-21 01:55:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:55:25,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:25,459 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] [2021-11-21 01:55:25,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:25,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:25,670 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:25,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-21 01:55:25,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:25,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167243879] [2021-11-21 01:55:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:25,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:25,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:25,673 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:25,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:55:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:25,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:55:25,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:25,823 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 [2021-11-21 01:55:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:26,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:26,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:26,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167243879] [2021-11-21 01:55:26,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167243879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:26,445 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:26,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:55:26,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291296009] [2021-11-21 01:55:26,445 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:26,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:55:26,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:55:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:55:26,447 INFO L87 Difference]: Start difference. First operand 2428 states and 3570 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) [2021-11-21 01:55:36,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:36,294 INFO L93 Difference]: Finished difference Result 3015 states and 4197 transitions. [2021-11-21 01:55:36,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:55:36,295 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 [2021-11-21 01:55:36,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:36,306 INFO L225 Difference]: With dead ends: 3015 [2021-11-21 01:55:36,306 INFO L226 Difference]: Without dead ends: 3015 [2021-11-21 01:55:36,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:55:36,307 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 2101 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:36,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2101 Valid, 2804 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-21 01:55:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2021-11-21 01:55:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2424. [2021-11-21 01:55:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1840 states have (on average 1.9119565217391303) internal successors, (3518), 2409 states have internal predecessors, (3518), 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) [2021-11-21 01:55:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3562 transitions. [2021-11-21 01:55:36,359 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3562 transitions. Word has length 27 [2021-11-21 01:55:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:36,360 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 3562 transitions. [2021-11-21 01:55:36,360 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) [2021-11-21 01:55:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3562 transitions. [2021-11-21 01:55:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-21 01:55:36,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:36,362 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] [2021-11-21 01:55:36,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:36,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:36,573 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:36,574 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-21 01:55:36,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:36,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80171194] [2021-11-21 01:55:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:36,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:36,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:36,575 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:36,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:55:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:36,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:55:36,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:36,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:36,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80171194] [2021-11-21 01:55:36,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80171194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:36,953 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:36,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:55:36,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439980872] [2021-11-21 01:55:36,954 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:36,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:36,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:36,955 INFO L87 Difference]: Start difference. First operand 2424 states and 3562 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) [2021-11-21 01:55:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:37,020 INFO L93 Difference]: Finished difference Result 2412 states and 3542 transitions. [2021-11-21 01:55:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:37,020 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 [2021-11-21 01:55:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:37,033 INFO L225 Difference]: With dead ends: 2412 [2021-11-21 01:55:37,033 INFO L226 Difference]: Without dead ends: 2412 [2021-11-21 01:55:37,033 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 [2021-11-21 01:55:37,034 INFO L933 BasicCegarLoop]: 1319 mSDtfsCounter, 1287 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 2649 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 [2021-11-21 01:55:37,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 2649 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:55:37,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-21 01:55:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-21 01:55:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1828 states have (on average 1.9135667396061269) internal successors, (3498), 2397 states have internal predecessors, (3498), 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) [2021-11-21 01:55:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3542 transitions. [2021-11-21 01:55:37,082 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3542 transitions. Word has length 42 [2021-11-21 01:55:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:37,083 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3542 transitions. [2021-11-21 01:55:37,083 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) [2021-11-21 01:55:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3542 transitions. [2021-11-21 01:55:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-21 01:55:37,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:37,085 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] [2021-11-21 01:55:37,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:37,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:37,297 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:37,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-21 01:55:37,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:37,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417319322] [2021-11-21 01:55:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:37,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:37,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:37,300 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:37,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:55:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:37,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:55:37,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:37,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:38,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:38,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417319322] [2021-11-21 01:55:38,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417319322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:38,219 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:38,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:55:38,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537852073] [2021-11-21 01:55:38,219 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:38,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:55:38,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:55:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:55:38,220 INFO L87 Difference]: Start difference. First operand 2412 states and 3542 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) [2021-11-21 01:55:38,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:38,305 INFO L93 Difference]: Finished difference Result 2228 states and 3187 transitions. [2021-11-21 01:55:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:55:38,306 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 [2021-11-21 01:55:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:38,318 INFO L225 Difference]: With dead ends: 2228 [2021-11-21 01:55:38,318 INFO L226 Difference]: Without dead ends: 2228 [2021-11-21 01:55:38,319 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 [2021-11-21 01:55:38,319 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 67 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:38,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2559 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:55:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-21 01:55:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2021-11-21 01:55:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1644 states have (on average 1.911800486618005) internal successors, (3143), 2213 states have internal predecessors, (3143), 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) [2021-11-21 01:55:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3187 transitions. [2021-11-21 01:55:38,360 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3187 transitions. Word has length 50 [2021-11-21 01:55:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:38,361 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3187 transitions. [2021-11-21 01:55:38,361 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) [2021-11-21 01:55:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3187 transitions. [2021-11-21 01:55:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-21 01:55:38,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:38,363 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] [2021-11-21 01:55:38,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:38,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:38,576 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:38,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-21 01:55:38,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:38,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234375218] [2021-11-21 01:55:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:38,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:38,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:38,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:38,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:55:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:38,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:55:38,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:38,938 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 [2021-11-21 01:55:38,946 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 [2021-11-21 01:55:39,563 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:55:39,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:55:39,574 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:55:39,575 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 25 treesize of output 21 [2021-11-21 01:55:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:39,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:44,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:44,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234375218] [2021-11-21 01:55:44,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234375218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:44,299 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:44,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:55:44,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184887006] [2021-11-21 01:55:44,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:44,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:55:44,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:55:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 01:55:44,300 INFO L87 Difference]: Start difference. First operand 2228 states and 3187 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) [2021-11-21 01:55:44,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:44,443 INFO L93 Difference]: Finished difference Result 2227 states and 3185 transitions. [2021-11-21 01:55:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:55:44,444 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 [2021-11-21 01:55:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:44,453 INFO L225 Difference]: With dead ends: 2227 [2021-11-21 01:55:44,453 INFO L226 Difference]: Without dead ends: 2227 [2021-11-21 01:55:44,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 01:55:44,454 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 41 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 917 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:44,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2092 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 917 Unchecked, 0.1s Time] [2021-11-21 01:55:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-11-21 01:55:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-11-21 01:55:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1644 states have (on average 1.9105839416058394) internal successors, (3141), 2212 states have internal predecessors, (3141), 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) [2021-11-21 01:55:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3185 transitions. [2021-11-21 01:55:44,498 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3185 transitions. Word has length 53 [2021-11-21 01:55:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:44,498 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3185 transitions. [2021-11-21 01:55:44,499 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) [2021-11-21 01:55:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3185 transitions. [2021-11-21 01:55:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 01:55:44,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:44,500 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] [2021-11-21 01:55:44,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:44,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:44,715 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:44,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:44,715 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-21 01:55:44,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:44,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956799290] [2021-11-21 01:55:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:44,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:44,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:44,717 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:44,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:55:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:44,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:55:44,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:45,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:45,225 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 [2021-11-21 01:55:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:45,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:45,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956799290] [2021-11-21 01:55:45,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956799290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:45,527 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:45,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:55:45,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53653105] [2021-11-21 01:55:45,527 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:45,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:55:45,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:45,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:55:45,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:55:45,528 INFO L87 Difference]: Start difference. First operand 2227 states and 3185 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) [2021-11-21 01:55:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:48,258 INFO L93 Difference]: Finished difference Result 2194 states and 3119 transitions. [2021-11-21 01:55:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:48,259 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 [2021-11-21 01:55:48,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:48,265 INFO L225 Difference]: With dead ends: 2194 [2021-11-21 01:55:48,266 INFO L226 Difference]: Without dead ends: 2194 [2021-11-21 01:55:48,266 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 [2021-11-21 01:55:48,267 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 2422 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:48,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2433 Valid, 736 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 01:55:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2021-11-21 01:55:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2194. [2021-11-21 01:55:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 1644 states have (on average 1.8704379562043796) internal successors, (3075), 2179 states have internal predecessors, (3075), 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) [2021-11-21 01:55:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3119 transitions. [2021-11-21 01:55:48,308 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3119 transitions. Word has length 55 [2021-11-21 01:55:48,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:48,309 INFO L470 AbstractCegarLoop]: Abstraction has 2194 states and 3119 transitions. [2021-11-21 01:55:48,309 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) [2021-11-21 01:55:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3119 transitions. [2021-11-21 01:55:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-21 01:55:48,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:48,310 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] [2021-11-21 01:55:48,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:48,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:48,523 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:48,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-21 01:55:48,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:48,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037638734] [2021-11-21 01:55:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:48,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:48,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:48,526 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:48,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:55:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:48,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:55:48,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:48,865 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 [2021-11-21 01:55:48,890 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 [2021-11-21 01:55:48,923 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 [2021-11-21 01:55:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:48,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:49,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037638734] [2021-11-21 01:55:49,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037638734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:49,057 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:49,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:55:49,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351968581] [2021-11-21 01:55:49,057 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:49,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:55:49,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:49,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:55:49,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:55:49,058 INFO L87 Difference]: Start difference. First operand 2194 states and 3119 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) [2021-11-21 01:55:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:52,929 INFO L93 Difference]: Finished difference Result 2193 states and 3117 transitions. [2021-11-21 01:55:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:55:52,929 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 [2021-11-21 01:55:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:52,934 INFO L225 Difference]: With dead ends: 2193 [2021-11-21 01:55:52,935 INFO L226 Difference]: Without dead ends: 2193 [2021-11-21 01:55:52,935 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 [2021-11-21 01:55:52,936 INFO L933 BasicCegarLoop]: 1289 mSDtfsCounter, 4 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:52,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3329 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:55:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-11-21 01:55:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2021-11-21 01:55:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1644 states have (on average 1.869221411192214) internal successors, (3073), 2178 states have internal predecessors, (3073), 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) [2021-11-21 01:55:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3117 transitions. [2021-11-21 01:55:52,993 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3117 transitions. Word has length 58 [2021-11-21 01:55:52,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:52,993 INFO L470 AbstractCegarLoop]: Abstraction has 2193 states and 3117 transitions. [2021-11-21 01:55:52,994 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) [2021-11-21 01:55:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3117 transitions. [2021-11-21 01:55:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-21 01:55:52,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:52,996 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] [2021-11-21 01:55:53,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:53,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:55:53,210 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:55:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-21 01:55:53,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:55:53,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776025000] [2021-11-21 01:55:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:53,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:55:53,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:55:53,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:55:53,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:55:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:53,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:55:53,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:53,511 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 [2021-11-21 01:55:53,551 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 [2021-11-21 01:55:53,562 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 [2021-11-21 01:55:53,633 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 [2021-11-21 01:55:53,637 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 [2021-11-21 01:55:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:53,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:54,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:55:54,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776025000] [2021-11-21 01:55:54,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776025000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:54,007 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:54,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:55:54,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397442338] [2021-11-21 01:55:54,007 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:54,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:55:54,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:55:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:55:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:55:54,008 INFO L87 Difference]: Start difference. First operand 2193 states and 3117 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) [2021-11-21 01:56:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:05,860 INFO L93 Difference]: Finished difference Result 2192 states and 3115 transitions. [2021-11-21 01:56:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:56:05,861 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 [2021-11-21 01:56:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:05,865 INFO L225 Difference]: With dead ends: 2192 [2021-11-21 01:56:05,865 INFO L226 Difference]: Without dead ends: 2192 [2021-11-21 01:56:05,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:56:05,866 INFO L933 BasicCegarLoop]: 1289 mSDtfsCounter, 3 mSDsluCounter, 3290 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4579 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:05,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4579 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2021-11-21 01:56:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-11-21 01:56:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2192. [2021-11-21 01:56:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 1642 states have (on average 1.8702801461632157) internal successors, (3071), 2177 states have internal predecessors, (3071), 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) [2021-11-21 01:56:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 3115 transitions. [2021-11-21 01:56:05,899 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 3115 transitions. Word has length 58 [2021-11-21 01:56:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:05,899 INFO L470 AbstractCegarLoop]: Abstraction has 2192 states and 3115 transitions. [2021-11-21 01:56:05,900 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) [2021-11-21 01:56:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 3115 transitions. [2021-11-21 01:56:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 01:56:05,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:05,901 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:56:05,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-21 01:56:06,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:56:06,120 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:56:06,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1665547938, now seen corresponding path program 1 times [2021-11-21 01:56:06,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:56:06,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166973491] [2021-11-21 01:56:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:06,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:56:06,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:56:06,123 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:56:06,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 01:56:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:06,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:56:06,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:06,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:06,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:56:06,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166973491] [2021-11-21 01:56:06,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166973491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:06,661 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:06,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:56:06,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551023209] [2021-11-21 01:56:06,661 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:06,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:56:06,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:56:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:56:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:56:06,663 INFO L87 Difference]: Start difference. First operand 2192 states and 3115 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) [2021-11-21 01:56:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:06,802 INFO L93 Difference]: Finished difference Result 2202 states and 3131 transitions. [2021-11-21 01:56:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:56:06,802 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 [2021-11-21 01:56:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:06,809 INFO L225 Difference]: With dead ends: 2202 [2021-11-21 01:56:06,809 INFO L226 Difference]: Without dead ends: 2202 [2021-11-21 01:56:06,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:56:06,810 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 9 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5129 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:06,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 5129 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:56:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2021-11-21 01:56:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2202. [2021-11-21 01:56:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1650 states have (on average 1.8684848484848484) internal successors, (3083), 2186 states have internal predecessors, (3083), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-21 01:56:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 3131 transitions. [2021-11-21 01:56:06,860 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 3131 transitions. Word has length 66 [2021-11-21 01:56:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:06,861 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 3131 transitions. [2021-11-21 01:56:06,861 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) [2021-11-21 01:56:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 3131 transitions. [2021-11-21 01:56:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 01:56:06,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:06,862 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] [2021-11-21 01:56:06,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:56:07,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:56:07,081 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:56:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -564345282, now seen corresponding path program 1 times [2021-11-21 01:56:07,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:56:07,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045074141] [2021-11-21 01:56:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:07,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:56:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:56:07,083 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:56:07,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 01:56:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:07,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:56:07,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:07,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:07,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:56:07,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045074141] [2021-11-21 01:56:07,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045074141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:56:07,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1028146230] [2021-11-21 01:56:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:07,715 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:56:07,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:56:07,717 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:56:07,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-21 01:56:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:07,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:56:07,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:08,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:08,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1028146230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:56:08,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109490987] [2021-11-21 01:56:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:08,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:56:08,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:56:08,215 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:56:08,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-21 01:56:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:08,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:56:08,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:08,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:08,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109490987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:56:08,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:56:08,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-21 01:56:08,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431422416] [2021-11-21 01:56:08,799 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:56:08,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:56:08,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:56:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:56:08,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:56:08,801 INFO L87 Difference]: Start difference. First operand 2202 states and 3131 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) [2021-11-21 01:56:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:09,348 INFO L93 Difference]: Finished difference Result 2216 states and 3151 transitions. [2021-11-21 01:56:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:56:09,349 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 [2021-11-21 01:56:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:09,353 INFO L225 Difference]: With dead ends: 2216 [2021-11-21 01:56:09,354 INFO L226 Difference]: Without dead ends: 2210 [2021-11-21 01:56:09,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:56:09,355 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 36 mSDsluCounter, 7680 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 8967 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:09,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 8967 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:56:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2021-11-21 01:56:09,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 2208. [2021-11-21 01:56:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1656 states have (on average 1.8659420289855073) internal successors, (3090), 2192 states have internal predecessors, (3090), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-21 01:56:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3138 transitions. [2021-11-21 01:56:09,393 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3138 transitions. Word has length 68 [2021-11-21 01:56:09,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:09,394 INFO L470 AbstractCegarLoop]: Abstraction has 2208 states and 3138 transitions. [2021-11-21 01:56:09,394 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) [2021-11-21 01:56:09,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3138 transitions. [2021-11-21 01:56:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-21 01:56:09,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:09,395 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] [2021-11-21 01:56:09,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-21 01:56:09,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-21 01:56:09,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-21 01:56:10,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:56:10,009 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:56:10,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:10,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1076340734, now seen corresponding path program 2 times [2021-11-21 01:56:10,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:56:10,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996374589] [2021-11-21 01:56:10,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:56:10,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:56:10,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:56:10,011 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:56:10,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-21 01:56:10,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:56:10,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:56:10,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:56:10,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:10,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:11,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:56:11,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996374589] [2021-11-21 01:56:11,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996374589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:56:11,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1971990079] [2021-11-21 01:56:11,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:56:11,424 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:56:11,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:56:11,424 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:56:11,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-21 01:56:12,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:56:12,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:56:12,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:56:12,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:12,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:12,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1971990079] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:56:12,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390704373] [2021-11-21 01:56:12,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:56:12,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:56:12,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:56:12,811 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:56:12,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-21 01:56:19,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:56:19,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:56:19,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:56:19,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:20,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:20,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390704373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:56:20,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:56:20,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 19 [2021-11-21 01:56:20,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850106641] [2021-11-21 01:56:20,437 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:56:20,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:56:20,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:56:20,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:56:20,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:56:20,439 INFO L87 Difference]: Start difference. First operand 2208 states and 3138 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) [2021-11-21 01:56:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:22,329 INFO L93 Difference]: Finished difference Result 2234 states and 3197 transitions. [2021-11-21 01:56:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 01:56:22,329 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 [2021-11-21 01:56:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:22,334 INFO L225 Difference]: With dead ends: 2234 [2021-11-21 01:56:22,334 INFO L226 Difference]: Without dead ends: 2228 [2021-11-21 01:56:22,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=387, Invalid=735, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:56:22,335 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 85 mSDsluCounter, 8999 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 10289 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:22,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 10289 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:56:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-21 01:56:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2220. [2021-11-21 01:56:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1668 states have (on average 1.8615107913669064) internal successors, (3105), 2204 states have internal predecessors, (3105), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-21 01:56:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3153 transitions. [2021-11-21 01:56:22,373 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3153 transitions. Word has length 72 [2021-11-21 01:56:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:22,373 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 3153 transitions. [2021-11-21 01:56:22,374 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) [2021-11-21 01:56:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3153 transitions. [2021-11-21 01:56:22,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 01:56:22,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:22,375 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] [2021-11-21 01:56:22,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-21 01:56:22,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:56:22,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-21 01:56:23,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:56:23,001 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:56:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1792592766, now seen corresponding path program 3 times [2021-11-21 01:56:23,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:56:23,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308654363] [2021-11-21 01:56:23,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:56:23,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:56:23,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:56:23,003 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:56:23,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-21 01:56:23,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 01:56:23,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:56:23,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:56:23,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:24,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:25,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:56:25,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308654363] [2021-11-21 01:56:25,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308654363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:56:25,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1331616869] [2021-11-21 01:56:25,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:56:25,546 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:56:25,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:56:25,547 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:56:25,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-21 01:56:31,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 01:56:31,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:56:31,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:56:31,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:31,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:56:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:31,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1331616869] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:56:31,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205133048] [2021-11-21 01:56:31,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:56:31,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:56:31,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:56:31,957 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:56:31,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1e8d51-09d8-48fb-be8a-db19339d2f12/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process