./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:16:01,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:16:01,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:16:01,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:16:01,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:16:01,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:16:01,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:16:01,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:16:01,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:16:01,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:16:01,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:16:01,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:16:01,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:16:01,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:16:01,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:16:01,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:16:01,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:16:01,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:16:01,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:16:01,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:16:01,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:16:01,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:16:01,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:16:01,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:16:01,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:16:01,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:16:01,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:16:01,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:16:01,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:16:01,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:16:01,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:16:01,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:16:01,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:16:01,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:16:01,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:16:01,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:16:01,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:16:01,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:16:01,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:16:01,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:16:01,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:16:01,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:16:01,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:16:01,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:16:01,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:16:01,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:16:01,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:16:01,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:16:01,905 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:16:01,906 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:16:01,906 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:16:01,906 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:16:01,908 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:16:01,908 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:16:01,908 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:16:01,909 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:16:01,909 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:16:01,909 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:16:01,909 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:16:01,910 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:16:01,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:16:01,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:16:01,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:16:01,912 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:16:01,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:16:01,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:16:01,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:16:01,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:16:01,915 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:16:01,916 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:16:01,916 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:16:01,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:16:01,917 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:16:01,917 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:16:01,917 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:16:01,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:16:01,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:16:01,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:16:01,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:16:01,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:16:01,919 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:16:01,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:16:01,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:16:01,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:16:01,920 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_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2021-11-23 03:16:02,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:16:02,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:16:02,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:16:02,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:16:02,318 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:16:02,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-23 03:16:02,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data/7f4035076/735f585474b941eb8dcbdd3b72d19f35/FLAG04ceaced7 [2021-11-23 03:16:03,224 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:16:03,227 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-23 03:16:03,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data/7f4035076/735f585474b941eb8dcbdd3b72d19f35/FLAG04ceaced7 [2021-11-23 03:16:03,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data/7f4035076/735f585474b941eb8dcbdd3b72d19f35 [2021-11-23 03:16:03,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:16:03,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:16:03,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:16:03,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:16:03,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:16:03,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:16:03" (1/1) ... [2021-11-23 03:16:03,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3215553a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:03, skipping insertion in model container [2021-11-23 03:16:03,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:16:03" (1/1) ... [2021-11-23 03:16:03,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:16:03,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:16:04,623 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_f1baddc4-4058-460d-bd2c-031179abb464/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-23 03:16:04,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:16:04,974 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 03:16:04,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@17351f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:04, skipping insertion in model container [2021-11-23 03:16:04,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:16:04,976 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 03:16:04,978 INFO L158 Benchmark]: Toolchain (without parser) took 1190.83ms. Allocated memory is still 107.0MB. Free memory was 66.0MB in the beginning and 62.2MB in the end (delta: 3.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:16:04,979 INFO L158 Benchmark]: CDTParser took 0.83ms. Allocated memory is still 107.0MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:16:04,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1187.32ms. Allocated memory is still 107.0MB. Free memory was 65.8MB in the beginning and 62.2MB in the end (delta: 3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:16:04,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83ms. Allocated memory is still 107.0MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1187.32ms. Allocated memory is still 107.0MB. Free memory was 65.8MB in the beginning and 62.2MB in the end (delta: 3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:16:07,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:16:07,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:16:07,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:16:07,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:16:07,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:16:07,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:16:07,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:16:07,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:16:07,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:16:07,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:16:07,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:16:07,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:16:07,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:16:07,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:16:07,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:16:07,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:16:07,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:16:07,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:16:07,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:16:07,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:16:07,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:16:07,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:16:07,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:16:07,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:16:07,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:16:07,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:16:07,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:16:07,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:16:07,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:16:07,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:16:07,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:16:07,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:16:07,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:16:07,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:16:07,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:16:07,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:16:07,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:16:07,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:16:07,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:16:07,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:16:07,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 03:16:08,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:16:08,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:16:08,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:16:08,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:16:08,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:16:08,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:16:08,056 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:16:08,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:16:08,057 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:16:08,057 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:16:08,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:16:08,058 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:16:08,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:16:08,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:16:08,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:16:08,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:16:08,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:16:08,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:16:08,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:16:08,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:16:08,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:16:08,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:16:08,063 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:16:08,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:16:08,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:16:08,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:16:08,064 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:16:08,065 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:16:08,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:16:08,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:16:08,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:16:08,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:16:08,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:16:08,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:16:08,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:16:08,068 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:16:08,068 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:16:08,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:16:08,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:16:08,069 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_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2021-11-23 03:16:08,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:16:08,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:16:08,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:16:08,578 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:16:08,579 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:16:08,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-23 03:16:08,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data/7963b5534/fcc6c0b5c8e24535993286db44cadaaf/FLAG44b85b004 [2021-11-23 03:16:09,502 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:16:09,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-23 03:16:09,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data/7963b5534/fcc6c0b5c8e24535993286db44cadaaf/FLAG44b85b004 [2021-11-23 03:16:09,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/data/7963b5534/fcc6c0b5c8e24535993286db44cadaaf [2021-11-23 03:16:09,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:16:09,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:16:09,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:16:09,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:16:09,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:16:09,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:16:09" (1/1) ... [2021-11-23 03:16:09,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbaa156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:09, skipping insertion in model container [2021-11-23 03:16:09,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:16:09" (1/1) ... [2021-11-23 03:16:09,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:16:09,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:16:10,492 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_f1baddc4-4058-460d-bd2c-031179abb464/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-23 03:16:10,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:16:10,883 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 03:16:10,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:16:10,940 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_f1baddc4-4058-460d-bd2c-031179abb464/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-23 03:16:11,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:16:11,137 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:16:11,168 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_f1baddc4-4058-460d-bd2c-031179abb464/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-23 03:16:11,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:16:11,358 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:16:11,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11 WrapperNode [2021-11-23 03:16:11,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:16:11,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:16:11,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:16:11,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:16:11,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,604 INFO L137 Inliner]: procedures = 180, calls = 623, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2491 [2021-11-23 03:16:11,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:16:11,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:16:11,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:16:11,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:16:11,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:16:11,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:16:11,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:16:11,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:16:11,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (1/1) ... [2021-11-23 03:16:11,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:16:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:16:11,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:16:11,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:16:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 03:16:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-23 03:16:11,976 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-23 03:16:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 03:16:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:16:11,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:16:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:16:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:16:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:16:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:16:12,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:16:12,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:16:12,024 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 03:16:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:16:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:16:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 03:16:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:16:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:16:12,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:16:12,434 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:16:12,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:16:12,453 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:16:25,182 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:16:25,206 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:16:25,206 INFO L301 CfgBuilder]: Removed 168 assume(true) statements. [2021-11-23 03:16:25,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:25 BoogieIcfgContainer [2021-11-23 03:16:25,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:16:25,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:16:25,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:16:25,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:16:25,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:16:09" (1/3) ... [2021-11-23 03:16:25,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55623122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:25, skipping insertion in model container [2021-11-23 03:16:25,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:11" (2/3) ... [2021-11-23 03:16:25,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55623122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:25, skipping insertion in model container [2021-11-23 03:16:25,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:25" (3/3) ... [2021-11-23 03:16:25,224 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-3.i [2021-11-23 03:16:25,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:16:25,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2021-11-23 03:16:25,288 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:16:25,296 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:16:25,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2021-11-23 03:16:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 03:16:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 03:16:25,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:16:25,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 03:16:25,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:16:25,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:16:25,375 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-23 03:16:25,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:16:25,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860971023] [2021-11-23 03:16:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:16:25,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:16:25,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:16:25,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:16:25,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:16:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:16:25,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:16:25,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:16:25,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:16:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:16:25,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:16:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:16:25,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:16:25,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860971023] [2021-11-23 03:16:25,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860971023] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:16:25,869 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:16:25,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:16:25,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065039588] [2021-11-23 03:16:25,873 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:16:25,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:16:25,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:16:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:16:25,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:16:25,969 INFO L87 Difference]: Start difference. First operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:16:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:16:32,231 INFO L93 Difference]: Finished difference Result 3281 states and 3483 transitions. [2021-11-23 03:16:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:16:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 03:16:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:16:32,275 INFO L225 Difference]: With dead ends: 3281 [2021-11-23 03:16:32,275 INFO L226 Difference]: Without dead ends: 3279 [2021-11-23 03:16:32,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:16:32,282 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 2318 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:16:32,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2230 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 03:16:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-11-23 03:16:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2579. [2021-11-23 03:16:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 1398 states have (on average 2.067238912732475) internal successors, (2890), 2563 states have internal predecessors, (2890), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:16:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 2922 transitions. [2021-11-23 03:16:32,509 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 2922 transitions. Word has length 3 [2021-11-23 03:16:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:16:32,510 INFO L470 AbstractCegarLoop]: Abstraction has 2579 states and 2922 transitions. [2021-11-23 03:16:32,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:16:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 2922 transitions. [2021-11-23 03:16:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 03:16:32,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:16:32,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 03:16:32,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:16:32,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:16:32,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:16:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:16:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-23 03:16:32,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:16:32,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685911702] [2021-11-23 03:16:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:16:32,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:16:32,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:16:32,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:16:32,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:16:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:16:33,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:16:33,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:16:33,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:16:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:16:33,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:16:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:16:33,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:16:33,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685911702] [2021-11-23 03:16:33,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685911702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:16:33,158 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:16:33,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 03:16:33,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766822537] [2021-11-23 03:16:33,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:16:33,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:16:33,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:16:33,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:16:33,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:16:33,161 INFO L87 Difference]: Start difference. First operand 2579 states and 2922 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:16:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:16:46,411 INFO L93 Difference]: Finished difference Result 4057 states and 4519 transitions. [2021-11-23 03:16:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:16:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 03:16:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:16:46,440 INFO L225 Difference]: With dead ends: 4057 [2021-11-23 03:16:46,441 INFO L226 Difference]: Without dead ends: 4057 [2021-11-23 03:16:46,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:16:46,444 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 3042 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:16:46,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3050 Valid, 3708 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2021-11-23 03:16:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-11-23 03:16:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 2743. [2021-11-23 03:16:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 1574 states have (on average 2.053367217280813) internal successors, (3232), 2727 states have internal predecessors, (3232), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:16:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3264 transitions. [2021-11-23 03:16:46,560 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3264 transitions. Word has length 3 [2021-11-23 03:16:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:16:46,560 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3264 transitions. [2021-11-23 03:16:46,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:16:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3264 transitions. [2021-11-23 03:16:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:16:46,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:16:46,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:16:46,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:16:46,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:16:46,778 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:16:46,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:16:46,778 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-23 03:16:46,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:16:46,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457500277] [2021-11-23 03:16:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:16:46,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:16:46,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:16:46,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:16:46,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:16:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:16:47,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:16:47,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:16:47,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:16:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:16:47,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:16:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:16:47,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:16:47,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457500277] [2021-11-23 03:16:47,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457500277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:16:47,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:16:47,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:16:47,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384279778] [2021-11-23 03:16:47,176 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:16:47,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:16:47,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:16:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:16:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:16:47,186 INFO L87 Difference]: Start difference. First operand 2743 states and 3264 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-11-23 03:16:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:16:52,261 INFO L93 Difference]: Finished difference Result 3481 states and 4002 transitions. [2021-11-23 03:16:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:16:52,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 03:16:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:16:52,285 INFO L225 Difference]: With dead ends: 3481 [2021-11-23 03:16:52,285 INFO L226 Difference]: Without dead ends: 3481 [2021-11-23 03:16:52,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:16:52,287 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 1987 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:16:52,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 3185 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:16:52,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2021-11-23 03:16:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 2652. [2021-11-23 03:16:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1574 states have (on average 1.9739517153748412) internal successors, (3107), 2636 states have internal predecessors, (3107), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:16:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3139 transitions. [2021-11-23 03:16:52,397 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3139 transitions. Word has length 8 [2021-11-23 03:16:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:16:52,397 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3139 transitions. [2021-11-23 03:16:52,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-11-23 03:16:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3139 transitions. [2021-11-23 03:16:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:16:52,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:16:52,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:16:52,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:16:52,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:16:52,614 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:16:52,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:16:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-23 03:16:52,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:16:52,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898483894] [2021-11-23 03:16:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:16:52,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:16:52,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:16:52,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:16:52,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:16:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:16:52,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:16:52,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:16:52,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:16:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:16:52,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:16:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:16:53,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:16:53,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898483894] [2021-11-23 03:16:53,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898483894] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:16:53,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:16:53,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 03:16:53,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838270649] [2021-11-23 03:16:53,067 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:16:53,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:16:53,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:16:53,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:16:53,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:16:53,069 INFO L87 Difference]: Start difference. First operand 2652 states and 3139 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:05,422 INFO L93 Difference]: Finished difference Result 3607 states and 4030 transitions. [2021-11-23 03:17:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:17:05,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 03:17:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:05,444 INFO L225 Difference]: With dead ends: 3607 [2021-11-23 03:17:05,444 INFO L226 Difference]: Without dead ends: 3607 [2021-11-23 03:17:05,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:17:05,446 INFO L933 BasicCegarLoop]: 2677 mSDtfsCounter, 1441 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 5029 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:05,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 5029 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2021-11-23 03:17:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2021-11-23 03:17:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 2644. [2021-11-23 03:17:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1576 states have (on average 1.958756345177665) internal successors, (3087), 2628 states have internal predecessors, (3087), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3119 transitions. [2021-11-23 03:17:05,522 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3119 transitions. Word has length 8 [2021-11-23 03:17:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:05,523 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3119 transitions. [2021-11-23 03:17:05,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3119 transitions. [2021-11-23 03:17:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:17:05,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:05,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:17:05,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-23 03:17:05,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:05,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-23 03:17:05,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:05,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103008540] [2021-11-23 03:17:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:05,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:05,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:05,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:05,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 03:17:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:05,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:17:05,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:06,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:06,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:06,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103008540] [2021-11-23 03:17:06,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103008540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:06,052 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:06,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:17:06,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133926769] [2021-11-23 03:17:06,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:06,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:17:06,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:06,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:17:06,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:17:06,054 INFO L87 Difference]: Start difference. First operand 2644 states and 3119 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) [2021-11-23 03:17:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:06,125 INFO L93 Difference]: Finished difference Result 2602 states and 3076 transitions. [2021-11-23 03:17:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:17:06,127 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 [2021-11-23 03:17:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:06,141 INFO L225 Difference]: With dead ends: 2602 [2021-11-23 03:17:06,142 INFO L226 Difference]: Without dead ends: 2602 [2021-11-23 03:17:06,142 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 [2021-11-23 03:17:06,143 INFO L933 BasicCegarLoop]: 2396 mSDtfsCounter, 2384 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:06,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 3606 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:17:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-23 03:17:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2602. [2021-11-23 03:17:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1558 states have (on average 1.9537869062901156) internal successors, (3044), 2586 states have internal predecessors, (3044), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3076 transitions. [2021-11-23 03:17:06,206 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3076 transitions. Word has length 11 [2021-11-23 03:17:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:06,207 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3076 transitions. [2021-11-23 03:17:06,207 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) [2021-11-23 03:17:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3076 transitions. [2021-11-23 03:17:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:17:06,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:06,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:17:06,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:06,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:06,421 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-23 03:17:06,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:06,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133340652] [2021-11-23 03:17:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:06,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:06,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:06,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 03:17:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:06,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:17:06,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:06,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:06,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:06,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133340652] [2021-11-23 03:17:06,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133340652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:06,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:06,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 03:17:06,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495036479] [2021-11-23 03:17:06,720 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:06,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:17:06,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:06,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:17:06,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:17:06,721 INFO L87 Difference]: Start difference. First operand 2602 states and 3076 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) [2021-11-23 03:17:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:06,890 INFO L93 Difference]: Finished difference Result 2581 states and 3048 transitions. [2021-11-23 03:17:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:17:06,891 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 [2021-11-23 03:17:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:06,903 INFO L225 Difference]: With dead ends: 2581 [2021-11-23 03:17:06,903 INFO L226 Difference]: Without dead ends: 2581 [2021-11-23 03:17:06,903 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 [2021-11-23 03:17:06,904 INFO L933 BasicCegarLoop]: 2351 mSDtfsCounter, 2316 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:06,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 5905 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:17:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2021-11-23 03:17:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2580. [2021-11-23 03:17:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 1550 states have (on average 1.9451612903225806) internal successors, (3015), 2564 states have internal predecessors, (3015), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3047 transitions. [2021-11-23 03:17:06,960 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3047 transitions. Word has length 13 [2021-11-23 03:17:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:06,960 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3047 transitions. [2021-11-23 03:17:06,960 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) [2021-11-23 03:17:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3047 transitions. [2021-11-23 03:17:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:17:06,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:06,962 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] [2021-11-23 03:17:06,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:07,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:07,182 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:07,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:07,183 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-23 03:17:07,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:07,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193786858] [2021-11-23 03:17:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:07,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:07,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:07,185 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:07,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 03:17:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:07,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:17:07,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:07,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:07,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:07,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193786858] [2021-11-23 03:17:07,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193786858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:07,489 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:07,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:17:07,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015814817] [2021-11-23 03:17:07,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:07,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:17:07,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:17:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:17:07,491 INFO L87 Difference]: Start difference. First operand 2580 states and 3047 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:07,579 INFO L93 Difference]: Finished difference Result 4234 states and 4857 transitions. [2021-11-23 03:17:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:17:07,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 20 [2021-11-23 03:17:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:07,616 INFO L225 Difference]: With dead ends: 4234 [2021-11-23 03:17:07,617 INFO L226 Difference]: Without dead ends: 4234 [2021-11-23 03:17:07,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:17:07,619 INFO L933 BasicCegarLoop]: 4082 mSDtfsCounter, 2277 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 7690 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:07,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2287 Valid, 7690 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:17:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2021-11-23 03:17:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2538. [2021-11-23 03:17:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 1532 states have (on average 1.9399477806788512) internal successors, (2972), 2522 states have internal predecessors, (2972), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3004 transitions. [2021-11-23 03:17:07,700 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3004 transitions. Word has length 20 [2021-11-23 03:17:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:07,701 INFO L470 AbstractCegarLoop]: Abstraction has 2538 states and 3004 transitions. [2021-11-23 03:17:07,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3004 transitions. [2021-11-23 03:17:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:17:07,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:07,703 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] [2021-11-23 03:17:07,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:07,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:07,917 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-23 03:17:07,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:07,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607020343] [2021-11-23 03:17:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:07,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:07,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:07,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:07,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 03:17:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:08,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:17:08,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:08,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:08,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:08,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607020343] [2021-11-23 03:17:08,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607020343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:08,204 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:08,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:17:08,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687698252] [2021-11-23 03:17:08,205 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:08,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:17:08,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:17:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:17:08,206 INFO L87 Difference]: Start difference. First operand 2538 states and 3004 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:08,311 INFO L93 Difference]: Finished difference Result 4107 states and 4676 transitions. [2021-11-23 03:17:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:17:08,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 20 [2021-11-23 03:17:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:08,324 INFO L225 Difference]: With dead ends: 4107 [2021-11-23 03:17:08,324 INFO L226 Difference]: Without dead ends: 4107 [2021-11-23 03:17:08,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:17:08,325 INFO L933 BasicCegarLoop]: 3767 mSDtfsCounter, 4468 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:08,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 5521 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:17:08,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-11-23 03:17:08,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2460. [2021-11-23 03:17:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 1478 states have (on average 1.9235453315290933) internal successors, (2843), 2444 states have internal predecessors, (2843), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 2875 transitions. [2021-11-23 03:17:08,389 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 2875 transitions. Word has length 20 [2021-11-23 03:17:08,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:08,389 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 2875 transitions. [2021-11-23 03:17:08,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:08,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 2875 transitions. [2021-11-23 03:17:08,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:17:08,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:08,391 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] [2021-11-23 03:17:08,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:08,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:08,605 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:08,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-23 03:17:08,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:08,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477317824] [2021-11-23 03:17:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:08,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:08,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:08,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:08,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 03:17:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:08,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:17:08,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:08,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:08,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477317824] [2021-11-23 03:17:08,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477317824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:08,993 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:08,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 03:17:08,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687879423] [2021-11-23 03:17:08,993 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:08,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:17:08,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:17:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:17:08,995 INFO L87 Difference]: Start difference. First operand 2460 states and 2875 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:09,151 INFO L93 Difference]: Finished difference Result 4093 states and 4657 transitions. [2021-11-23 03:17:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:17:09,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22 [2021-11-23 03:17:09,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:09,178 INFO L225 Difference]: With dead ends: 4093 [2021-11-23 03:17:09,178 INFO L226 Difference]: Without dead ends: 4093 [2021-11-23 03:17:09,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:17:09,179 INFO L933 BasicCegarLoop]: 3728 mSDtfsCounter, 4400 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 9210 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:09,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4410 Valid, 9210 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:17:09,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-11-23 03:17:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2438. [2021-11-23 03:17:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 1470 states have (on average 1.9142857142857144) internal successors, (2814), 2422 states have internal predecessors, (2814), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 2846 transitions. [2021-11-23 03:17:09,248 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 2846 transitions. Word has length 22 [2021-11-23 03:17:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:09,249 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 2846 transitions. [2021-11-23 03:17:09,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 2846 transitions. [2021-11-23 03:17:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:17:09,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:09,255 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] [2021-11-23 03:17:09,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:09,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:09,470 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-23 03:17:09,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:09,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621764036] [2021-11-23 03:17:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:09,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:09,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:09,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:09,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 03:17:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:09,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:17:09,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:09,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:09,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621764036] [2021-11-23 03:17:09,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621764036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:09,864 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:09,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 03:17:09,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21463909] [2021-11-23 03:17:09,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:09,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:17:09,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:09,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:17:09,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:17:09,867 INFO L87 Difference]: Start difference. First operand 2438 states and 2846 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:10,024 INFO L93 Difference]: Finished difference Result 4028 states and 4534 transitions. [2021-11-23 03:17:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:17:10,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22 [2021-11-23 03:17:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:10,043 INFO L225 Difference]: With dead ends: 4028 [2021-11-23 03:17:10,043 INFO L226 Difference]: Without dead ends: 4028 [2021-11-23 03:17:10,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:17:10,045 INFO L933 BasicCegarLoop]: 3874 mSDtfsCounter, 2170 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 11179 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:10,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 11179 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:17:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-11-23 03:17:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2400. [2021-11-23 03:17:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1446 states have (on average 1.8858921161825726) internal successors, (2727), 2384 states have internal predecessors, (2727), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2759 transitions. [2021-11-23 03:17:10,140 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2759 transitions. Word has length 22 [2021-11-23 03:17:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:10,140 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 2759 transitions. [2021-11-23 03:17:10,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2759 transitions. [2021-11-23 03:17:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:17:10,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:10,142 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] [2021-11-23 03:17:10,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:10,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:10,358 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:10,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-23 03:17:10,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:10,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807132591] [2021-11-23 03:17:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:10,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:10,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:10,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:10,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 03:17:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:10,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:17:10,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:10,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:17:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:10,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:10,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:10,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807132591] [2021-11-23 03:17:10,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807132591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:10,775 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:10,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:17:10,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168204929] [2021-11-23 03:17:10,776 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:10,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:17:10,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:17:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:17:10,777 INFO L87 Difference]: Start difference. First operand 2400 states and 2759 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) [2021-11-23 03:17:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:15,891 INFO L93 Difference]: Finished difference Result 3021 states and 3299 transitions. [2021-11-23 03:17:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:17:15,892 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 [2021-11-23 03:17:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:15,900 INFO L225 Difference]: With dead ends: 3021 [2021-11-23 03:17:15,900 INFO L226 Difference]: Without dead ends: 3021 [2021-11-23 03:17:15,901 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 [2021-11-23 03:17:15,902 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 3081 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:15,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 2791 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:17:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-11-23 03:17:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2396. [2021-11-23 03:17:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1446 states have (on average 1.8831258644536653) internal successors, (2723), 2380 states have internal predecessors, (2723), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 2755 transitions. [2021-11-23 03:17:15,953 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 2755 transitions. Word has length 27 [2021-11-23 03:17:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:15,953 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 2755 transitions. [2021-11-23 03:17:15,953 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) [2021-11-23 03:17:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 2755 transitions. [2021-11-23 03:17:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:17:15,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:15,955 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] [2021-11-23 03:17:15,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:16,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:16,169 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-23 03:17:16,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:16,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434125639] [2021-11-23 03:17:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:16,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:16,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:16,172 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:16,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 03:17:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:16,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:17:16,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:16,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:17:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:16,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:17,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434125639] [2021-11-23 03:17:17,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434125639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:17,174 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:17,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:17:17,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675842709] [2021-11-23 03:17:17,175 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:17,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:17:17,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:17:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:17:17,177 INFO L87 Difference]: Start difference. First operand 2396 states and 2755 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:32,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:32,500 INFO L93 Difference]: Finished difference Result 3571 states and 3924 transitions. [2021-11-23 03:17:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:17:32,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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 [2021-11-23 03:17:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:32,514 INFO L225 Difference]: With dead ends: 3571 [2021-11-23 03:17:32,514 INFO L226 Difference]: Without dead ends: 3571 [2021-11-23 03:17:32,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:17:32,516 INFO L933 BasicCegarLoop]: 1575 mSDtfsCounter, 6054 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6054 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:32,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6054 Valid, 4341 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2021-11-23 03:17:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-11-23 03:17:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2429. [2021-11-23 03:17:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 1480 states have (on average 1.864864864864865) internal successors, (2760), 2413 states have internal predecessors, (2760), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 2792 transitions. [2021-11-23 03:17:32,576 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 2792 transitions. Word has length 27 [2021-11-23 03:17:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:32,577 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 2792 transitions. [2021-11-23 03:17:32,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 2792 transitions. [2021-11-23 03:17:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:17:32,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:32,579 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] [2021-11-23 03:17:32,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-23 03:17:32,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:32,793 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-23 03:17:32,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:32,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926953960] [2021-11-23 03:17:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:32,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:32,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:32,797 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:32,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 03:17:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:33,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:17:33,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:33,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:17:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:33,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:33,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:33,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926953960] [2021-11-23 03:17:33,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926953960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:33,316 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:33,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:17:33,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200240651] [2021-11-23 03:17:33,317 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:33,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:17:33,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:17:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:17:33,318 INFO L87 Difference]: Start difference. First operand 2429 states and 2792 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:17:40,628 INFO L93 Difference]: Finished difference Result 4682 states and 5248 transitions. [2021-11-23 03:17:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:17:40,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-11-23 03:17:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:17:40,641 INFO L225 Difference]: With dead ends: 4682 [2021-11-23 03:17:40,642 INFO L226 Difference]: Without dead ends: 4682 [2021-11-23 03:17:40,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:17:40,643 INFO L933 BasicCegarLoop]: 2684 mSDtfsCounter, 4263 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:17:40,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4270 Valid, 5056 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 03:17:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-11-23 03:17:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 2425. [2021-11-23 03:17:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1480 states have (on average 1.8621621621621622) internal successors, (2756), 2409 states have internal predecessors, (2756), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:17:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2788 transitions. [2021-11-23 03:17:40,735 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2788 transitions. Word has length 36 [2021-11-23 03:17:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:17:40,735 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 2788 transitions. [2021-11-23 03:17:40,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:17:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2788 transitions. [2021-11-23 03:17:40,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:17:40,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:17:40,738 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] [2021-11-23 03:17:40,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 03:17:40,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:17:40,957 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:17:40,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:17:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-23 03:17:40,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:17:40,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305023290] [2021-11-23 03:17:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:17:40,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:17:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:17:40,963 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:17:40,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 03:17:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:17:41,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:17:41,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:17:41,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:17:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:41,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:17:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:17:42,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:17:42,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305023290] [2021-11-23 03:17:42,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305023290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:17:42,076 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:17:42,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:17:42,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047190206] [2021-11-23 03:17:42,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:17:42,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:17:42,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:17:42,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:17:42,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:17:42,078 INFO L87 Difference]: Start difference. First operand 2425 states and 2788 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:02,278 INFO L93 Difference]: Finished difference Result 4594 states and 5036 transitions. [2021-11-23 03:18:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:18:02,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 36 [2021-11-23 03:18:02,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:02,287 INFO L225 Difference]: With dead ends: 4594 [2021-11-23 03:18:02,287 INFO L226 Difference]: Without dead ends: 4594 [2021-11-23 03:18:02,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:18:02,289 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 4252 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 4879 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:02,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4257 Valid, 7476 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4879 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2021-11-23 03:18:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-11-23 03:18:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 2421. [2021-11-23 03:18:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1480 states have (on average 1.8594594594594596) internal successors, (2752), 2405 states have internal predecessors, (2752), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:18:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 2784 transitions. [2021-11-23 03:18:02,339 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 2784 transitions. Word has length 36 [2021-11-23 03:18:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:02,340 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 2784 transitions. [2021-11-23 03:18:02,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 2784 transitions. [2021-11-23 03:18:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:18:02,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:02,341 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] [2021-11-23 03:18:02,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:02,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:02,561 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:02,562 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-23 03:18:02,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:02,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573066831] [2021-11-23 03:18:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:02,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:02,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:02,564 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:02,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 03:18:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:02,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:18:02,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:02,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:18:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:02,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:03,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:03,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573066831] [2021-11-23 03:18:03,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573066831] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:03,099 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:03,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:18:03,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392600074] [2021-11-23 03:18:03,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:03,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:18:03,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:18:03,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:18:03,101 INFO L87 Difference]: Start difference. First operand 2421 states and 2784 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:11,076 INFO L93 Difference]: Finished difference Result 5038 states and 5620 transitions. [2021-11-23 03:18:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:18:11,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-11-23 03:18:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:11,084 INFO L225 Difference]: With dead ends: 5038 [2021-11-23 03:18:11,085 INFO L226 Difference]: Without dead ends: 5038 [2021-11-23 03:18:11,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:18:11,086 INFO L933 BasicCegarLoop]: 2521 mSDtfsCounter, 4829 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:11,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4839 Valid, 5082 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 03:18:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2021-11-23 03:18:11,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 2418. [2021-11-23 03:18:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.852027027027027) internal successors, (2741), 2402 states have internal predecessors, (2741), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:18:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2773 transitions. [2021-11-23 03:18:11,139 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2773 transitions. Word has length 36 [2021-11-23 03:18:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:11,140 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2773 transitions. [2021-11-23 03:18:11,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2773 transitions. [2021-11-23 03:18:11,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:18:11,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:11,142 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] [2021-11-23 03:18:11,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:11,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:11,355 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:11,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:11,356 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-23 03:18:11,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:11,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262359944] [2021-11-23 03:18:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:11,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:11,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:11,358 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:11,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 03:18:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:11,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:18:11,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:11,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:18:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:11,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:12,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:12,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262359944] [2021-11-23 03:18:12,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262359944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:12,457 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:12,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:18:12,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166099586] [2021-11-23 03:18:12,457 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:12,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:18:12,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:18:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:18:12,459 INFO L87 Difference]: Start difference. First operand 2418 states and 2773 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:38,747 INFO L93 Difference]: Finished difference Result 5170 states and 5700 transitions. [2021-11-23 03:18:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:18:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 36 [2021-11-23 03:18:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:38,753 INFO L225 Difference]: With dead ends: 5170 [2021-11-23 03:18:38,753 INFO L226 Difference]: Without dead ends: 5170 [2021-11-23 03:18:38,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:18:38,754 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 5159 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 7751 SdHoareTripleChecker+Invalid, 5169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:38,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 7751 Invalid, 5169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2021-11-23 03:18:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2021-11-23 03:18:38,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 2418. [2021-11-23 03:18:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.8493243243243243) internal successors, (2737), 2402 states have internal predecessors, (2737), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:18:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2769 transitions. [2021-11-23 03:18:38,803 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2769 transitions. Word has length 36 [2021-11-23 03:18:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:38,803 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2769 transitions. [2021-11-23 03:18:38,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2769 transitions. [2021-11-23 03:18:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:18:38,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:38,805 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] [2021-11-23 03:18:38,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:39,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:39,019 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:39,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-23 03:18:39,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:39,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585603227] [2021-11-23 03:18:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:39,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:39,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:39,022 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:39,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 03:18:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:39,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:18:39,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:39,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:39,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:39,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585603227] [2021-11-23 03:18:39,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585603227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:39,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:39,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:18:39,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013399566] [2021-11-23 03:18:39,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:39,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:18:39,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:39,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:18:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:18:39,436 INFO L87 Difference]: Start difference. First operand 2418 states and 2769 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:39,525 INFO L93 Difference]: Finished difference Result 2412 states and 2755 transitions. [2021-11-23 03:18:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:18:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2021-11-23 03:18:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:39,529 INFO L225 Difference]: With dead ends: 2412 [2021-11-23 03:18:39,530 INFO L226 Difference]: Without dead ends: 2412 [2021-11-23 03:18:39,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:18:39,531 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 1145 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:39,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 5385 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:18:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-23 03:18:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-23 03:18:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1474 states have (on average 1.8473541383989145) internal successors, (2723), 2396 states have internal predecessors, (2723), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:18:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 2755 transitions. [2021-11-23 03:18:39,570 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 2755 transitions. Word has length 40 [2021-11-23 03:18:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:39,571 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 2755 transitions. [2021-11-23 03:18:39,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 2755 transitions. [2021-11-23 03:18:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 03:18:39,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:39,572 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] [2021-11-23 03:18:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:39,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:39,787 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-23 03:18:39,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:39,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400250562] [2021-11-23 03:18:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:39,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:39,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:39,790 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:39,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 03:18:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:40,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:18:40,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:40,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:40,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:40,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400250562] [2021-11-23 03:18:40,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400250562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:40,772 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:40,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:18:40,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910380857] [2021-11-23 03:18:40,773 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:40,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:18:40,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:18:40,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:18:40,774 INFO L87 Difference]: Start difference. First operand 2412 states and 2755 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:41,172 INFO L93 Difference]: Finished difference Result 3930 states and 4407 transitions. [2021-11-23 03:18:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:18:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-23 03:18:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:41,176 INFO L225 Difference]: With dead ends: 3930 [2021-11-23 03:18:41,176 INFO L226 Difference]: Without dead ends: 3930 [2021-11-23 03:18:41,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:18:41,177 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1564 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:41,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 4296 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:18:41,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-11-23 03:18:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3131. [2021-11-23 03:18:41,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2189 states have (on average 1.814070351758794) internal successors, (3971), 3108 states have internal predecessors, (3971), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 03:18:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4017 transitions. [2021-11-23 03:18:41,231 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4017 transitions. Word has length 48 [2021-11-23 03:18:41,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:41,231 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 4017 transitions. [2021-11-23 03:18:41,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4017 transitions. [2021-11-23 03:18:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 03:18:41,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:41,233 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] [2021-11-23 03:18:41,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:41,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:41,454 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-23 03:18:41,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:41,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704910148] [2021-11-23 03:18:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:41,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:41,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:41,460 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:41,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 03:18:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:41,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:18:41,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:41,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:41,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704910148] [2021-11-23 03:18:41,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704910148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:41,935 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:41,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:18:41,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233817079] [2021-11-23 03:18:41,936 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:41,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:18:41,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:41,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:18:41,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:18:41,937 INFO L87 Difference]: Start difference. First operand 3131 states and 4017 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:42,054 INFO L93 Difference]: Finished difference Result 4459 states and 5419 transitions. [2021-11-23 03:18:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:18:42,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-11-23 03:18:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:42,062 INFO L225 Difference]: With dead ends: 4459 [2021-11-23 03:18:42,062 INFO L226 Difference]: Without dead ends: 4459 [2021-11-23 03:18:42,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:18:42,063 INFO L933 BasicCegarLoop]: 3642 mSDtfsCounter, 2139 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 8767 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:42,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 8767 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:18:42,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2021-11-23 03:18:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 3107. [2021-11-23 03:18:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 2165 states have (on average 1.8157043879907622) internal successors, (3931), 3084 states have internal predecessors, (3931), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 03:18:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 3977 transitions. [2021-11-23 03:18:42,135 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 3977 transitions. Word has length 51 [2021-11-23 03:18:42,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:42,136 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 3977 transitions. [2021-11-23 03:18:42,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 3977 transitions. [2021-11-23 03:18:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:18:42,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:42,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:18:42,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:42,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:42,353 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-23 03:18:42,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:42,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203391820] [2021-11-23 03:18:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:42,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:42,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:42,355 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:42,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 03:18:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:42,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:18:42,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:42,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:42,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:42,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203391820] [2021-11-23 03:18:42,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203391820] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:42,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:42,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:18:42,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058422057] [2021-11-23 03:18:42,877 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:42,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:18:42,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:18:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:18:42,878 INFO L87 Difference]: Start difference. First operand 3107 states and 3977 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:42,997 INFO L93 Difference]: Finished difference Result 4204 states and 4917 transitions. [2021-11-23 03:18:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:18:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2021-11-23 03:18:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:43,004 INFO L225 Difference]: With dead ends: 4204 [2021-11-23 03:18:43,005 INFO L226 Difference]: Without dead ends: 4204 [2021-11-23 03:18:43,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:18:43,006 INFO L933 BasicCegarLoop]: 3683 mSDtfsCounter, 2130 mSDsluCounter, 5216 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 8899 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:43,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 8899 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:18:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-11-23 03:18:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3095. [2021-11-23 03:18:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2153 states have (on average 1.8165350673478866) internal successors, (3911), 3072 states have internal predecessors, (3911), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 03:18:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3957 transitions. [2021-11-23 03:18:43,084 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3957 transitions. Word has length 54 [2021-11-23 03:18:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:43,085 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3957 transitions. [2021-11-23 03:18:43,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3957 transitions. [2021-11-23 03:18:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 03:18:43,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:43,086 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] [2021-11-23 03:18:43,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:43,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:43,303 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash -345082942, now seen corresponding path program 1 times [2021-11-23 03:18:43,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:43,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024938776] [2021-11-23 03:18:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:43,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:43,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:43,305 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:43,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 03:18:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:43,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:18:43,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:43,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:18:43,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:18:43,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:18:43,613 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 03:18:43,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-23 03:18:43,669 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 03:18:43,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-23 03:18:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:43,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:43,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:43,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024938776] [2021-11-23 03:18:43,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024938776] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:43,927 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:43,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:18:43,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911656369] [2021-11-23 03:18:43,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:43,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:18:43,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:18:43,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:18:43,929 INFO L87 Difference]: Start difference. First operand 3095 states and 3957 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:47,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:47,512 INFO L93 Difference]: Finished difference Result 3323 states and 4196 transitions. [2021-11-23 03:18:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:18:47,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 03:18:47,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:47,517 INFO L225 Difference]: With dead ends: 3323 [2021-11-23 03:18:47,517 INFO L226 Difference]: Without dead ends: 3323 [2021-11-23 03:18:47,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:18:47,519 INFO L933 BasicCegarLoop]: 2062 mSDtfsCounter, 1027 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 7241 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:47,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 7241 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 03:18:47,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-11-23 03:18:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3061. [2021-11-23 03:18:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 2119 states have (on average 1.8291647003303444) internal successors, (3876), 3038 states have internal predecessors, (3876), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 03:18:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3922 transitions. [2021-11-23 03:18:47,569 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3922 transitions. Word has length 57 [2021-11-23 03:18:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:47,570 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 3922 transitions. [2021-11-23 03:18:47,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3922 transitions. [2021-11-23 03:18:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 03:18:47,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:47,571 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] [2021-11-23 03:18:47,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:47,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:47,786 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-23 03:18:47,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:47,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238914786] [2021-11-23 03:18:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:47,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:47,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:47,791 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:47,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 03:18:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:48,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:18:48,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:48,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:48,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:48,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238914786] [2021-11-23 03:18:48,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238914786] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:48,953 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:48,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:18:48,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589133618] [2021-11-23 03:18:48,954 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:48,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:18:48,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:18:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:18:48,955 INFO L87 Difference]: Start difference. First operand 3061 states and 3922 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:49,140 INFO L93 Difference]: Finished difference Result 4503 states and 5557 transitions. [2021-11-23 03:18:49,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:18:49,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-23 03:18:49,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:49,150 INFO L225 Difference]: With dead ends: 4503 [2021-11-23 03:18:49,150 INFO L226 Difference]: Without dead ends: 4503 [2021-11-23 03:18:49,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:18:49,151 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 1262 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:49,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 4860 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:18:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2021-11-23 03:18:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 3784. [2021-11-23 03:18:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2838 states have (on average 1.7924594785059902) internal successors, (5087), 3754 states have internal predecessors, (5087), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:18:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5147 transitions. [2021-11-23 03:18:49,216 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5147 transitions. Word has length 59 [2021-11-23 03:18:49,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:49,217 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5147 transitions. [2021-11-23 03:18:49,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5147 transitions. [2021-11-23 03:18:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:18:49,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:49,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:18:49,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:49,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:18:49,434 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:18:49,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-23 03:18:49,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:18:49,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352560058] [2021-11-23 03:18:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:49,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:18:49,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:18:49,437 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:18:49,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 03:18:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:49,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:18:49,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:49,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:18:49,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:18:50,597 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:18:50,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-23 03:18:50,603 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:18:50,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-23 03:18:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:50,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:55,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:18:55,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352560058] [2021-11-23 03:18:55,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352560058] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:55,839 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:55,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:18:55,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139761861] [2021-11-23 03:18:55,840 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:55,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:18:55,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:18:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:18:55,842 INFO L87 Difference]: Start difference. First operand 3784 states and 5147 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:19:06,504 INFO L93 Difference]: Finished difference Result 5542 states and 7453 transitions. [2021-11-23 03:19:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:19:06,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-23 03:19:06,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:19:06,515 INFO L225 Difference]: With dead ends: 5542 [2021-11-23 03:19:06,515 INFO L226 Difference]: Without dead ends: 5542 [2021-11-23 03:19:06,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:19:06,517 INFO L933 BasicCegarLoop]: 2391 mSDtfsCounter, 2433 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2792 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:19:06,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 5116 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1638 Invalid, 0 Unknown, 2792 Unchecked, 10.5s Time] [2021-11-23 03:19:06,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-11-23 03:19:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 3754. [2021-11-23 03:19:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 2840 states have (on average 1.7693661971830985) internal successors, (5025), 3724 states have internal predecessors, (5025), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:19:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5085 transitions. [2021-11-23 03:19:06,587 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5085 transitions. Word has length 62 [2021-11-23 03:19:06,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:19:06,587 INFO L470 AbstractCegarLoop]: Abstraction has 3754 states and 5085 transitions. [2021-11-23 03:19:06,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5085 transitions. [2021-11-23 03:19:06,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:19:06,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:06,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:19:06,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 03:19:06,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:19:06,796 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:19:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:06,797 INFO L85 PathProgramCache]: Analyzing trace with hash -272070766, now seen corresponding path program 1 times [2021-11-23 03:19:06,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:19:06,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959948424] [2021-11-23 03:19:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:06,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:19:06,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:19:06,799 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:19:06,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 03:19:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:19:07,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:19:07,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:19:07,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:19:07,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:19:08,172 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:19:08,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 03:19:08,180 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:19:08,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 03:19:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:08,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:19:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:13,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:19:13,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959948424] [2021-11-23 03:19:13,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959948424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:19:13,289 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:19:13,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:19:13,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131788995] [2021-11-23 03:19:13,289 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:19:13,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:19:13,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:19:13,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:19:13,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:19:13,290 INFO L87 Difference]: Start difference. First operand 3754 states and 5085 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:19:20,664 INFO L93 Difference]: Finished difference Result 3808 states and 5065 transitions. [2021-11-23 03:19:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:19:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-23 03:19:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:19:20,671 INFO L225 Difference]: With dead ends: 3808 [2021-11-23 03:19:20,671 INFO L226 Difference]: Without dead ends: 3808 [2021-11-23 03:19:20,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:19:20,672 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 1407 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1531 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:19:20,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 3582 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1052 Invalid, 0 Unknown, 1531 Unchecked, 7.3s Time] [2021-11-23 03:19:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2021-11-23 03:19:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3770. [2021-11-23 03:19:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2887 states have (on average 1.7322480083131278) internal successors, (5001), 3740 states have internal predecessors, (5001), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:19:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5061 transitions. [2021-11-23 03:19:20,735 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5061 transitions. Word has length 62 [2021-11-23 03:19:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:19:20,736 INFO L470 AbstractCegarLoop]: Abstraction has 3770 states and 5061 transitions. [2021-11-23 03:19:20,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5061 transitions. [2021-11-23 03:19:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:19:20,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:20,737 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] [2021-11-23 03:19:20,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-23 03:19:20,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:19:20,952 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:19:20,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash -773371597, now seen corresponding path program 1 times [2021-11-23 03:19:20,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:19:20,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544725377] [2021-11-23 03:19:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:20,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:19:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:19:20,958 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:19:20,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-23 03:19:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:19:21,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:19:21,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:19:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:21,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:19:21,613 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 [2021-11-23 03:19:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:21,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:19:21,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544725377] [2021-11-23 03:19:21,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544725377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:19:21,977 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:19:21,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:19:21,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440494076] [2021-11-23 03:19:21,977 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:19:21,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:19:21,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:19:21,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:19:21,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:19:21,979 INFO L87 Difference]: Start difference. First operand 3770 states and 5061 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:19:25,751 INFO L93 Difference]: Finished difference Result 3768 states and 5057 transitions. [2021-11-23 03:19:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:19:25,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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 64 [2021-11-23 03:19:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:19:25,760 INFO L225 Difference]: With dead ends: 3768 [2021-11-23 03:19:25,760 INFO L226 Difference]: Without dead ends: 3768 [2021-11-23 03:19:25,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:19:25,762 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 6498 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6508 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:19:25,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6508 Valid, 1801 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 03:19:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2021-11-23 03:19:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3768. [2021-11-23 03:19:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 2887 states have (on average 1.7308624870107379) internal successors, (4997), 3738 states have internal predecessors, (4997), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:19:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5057 transitions. [2021-11-23 03:19:25,823 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5057 transitions. Word has length 64 [2021-11-23 03:19:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:19:25,823 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 5057 transitions. [2021-11-23 03:19:25,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5057 transitions. [2021-11-23 03:19:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:19:25,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:25,825 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] [2021-11-23 03:19:25,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-23 03:19:26,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:19:26,041 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:19:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 533035699, now seen corresponding path program 1 times [2021-11-23 03:19:26,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:19:26,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119934838] [2021-11-23 03:19:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:26,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:19:26,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:19:26,044 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:19:26,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-23 03:19:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:19:26,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:19:26,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:19:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:26,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:19:26,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-23 03:19:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:26,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:19:26,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119934838] [2021-11-23 03:19:26,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119934838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:19:26,996 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:19:26,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:19:26,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077135311] [2021-11-23 03:19:26,997 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:19:26,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:19:26,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:19:26,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:19:26,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:19:26,998 INFO L87 Difference]: Start difference. First operand 3768 states and 5057 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:19:33,480 INFO L93 Difference]: Finished difference Result 3767 states and 5043 transitions. [2021-11-23 03:19:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:19:33,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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 64 [2021-11-23 03:19:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:19:33,486 INFO L225 Difference]: With dead ends: 3767 [2021-11-23 03:19:33,486 INFO L226 Difference]: Without dead ends: 3767 [2021-11-23 03:19:33,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:19:33,487 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 1673 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:19:33,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 3052 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 03:19:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-23 03:19:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3715. [2021-11-23 03:19:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 2840 states have (on average 1.7376760563380282) internal successors, (4935), 3685 states have internal predecessors, (4935), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:19:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 4995 transitions. [2021-11-23 03:19:33,530 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 4995 transitions. Word has length 64 [2021-11-23 03:19:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:19:33,531 INFO L470 AbstractCegarLoop]: Abstraction has 3715 states and 4995 transitions. [2021-11-23 03:19:33,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 4995 transitions. [2021-11-23 03:19:33,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:19:33,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:33,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:19:33,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-23 03:19:33,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:19:33,732 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:19:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-23 03:19:33,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:19:33,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428825195] [2021-11-23 03:19:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:33,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:19:33,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:19:33,735 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:19:33,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 03:19:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:19:34,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:19:34,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:19:34,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:19:34,109 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 [2021-11-23 03:19:34,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:19:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:34,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:19:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:34,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:19:34,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428825195] [2021-11-23 03:19:34,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428825195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:19:34,271 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:19:34,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:19:34,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343795743] [2021-11-23 03:19:34,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:19:34,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:19:34,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:19:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:19:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:19:34,273 INFO L87 Difference]: Start difference. First operand 3715 states and 4995 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:41,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:19:41,276 INFO L93 Difference]: Finished difference Result 3714 states and 4993 transitions. [2021-11-23 03:19:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:19:41,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-23 03:19:41,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:19:41,282 INFO L225 Difference]: With dead ends: 3714 [2021-11-23 03:19:41,282 INFO L226 Difference]: Without dead ends: 3714 [2021-11-23 03:19:41,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:19:41,283 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 4 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:19:41,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5561 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-23 03:19:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-11-23 03:19:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3714. [2021-11-23 03:19:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3714 states, 2840 states have (on average 1.7369718309859155) internal successors, (4933), 3684 states have internal predecessors, (4933), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:19:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4993 transitions. [2021-11-23 03:19:41,332 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4993 transitions. Word has length 67 [2021-11-23 03:19:41,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:19:41,332 INFO L470 AbstractCegarLoop]: Abstraction has 3714 states and 4993 transitions. [2021-11-23 03:19:41,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:19:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4993 transitions. [2021-11-23 03:19:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:19:41,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:41,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:19:41,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 03:19:41,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:19:41,560 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:19:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-23 03:19:41,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:19:41,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979708167] [2021-11-23 03:19:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:41,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:19:41,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:19:41,564 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:19:41,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-23 03:19:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:19:41,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:19:41,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:19:41,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:19:42,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:19:42,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 03:19:42,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 03:19:42,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-23 03:19:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:42,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:19:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:42,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:19:42,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979708167] [2021-11-23 03:19:42,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979708167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:19:42,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:19:42,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 03:19:42,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40778913] [2021-11-23 03:19:42,464 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:19:42,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:19:42,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:19:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:19:42,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:19:42,465 INFO L87 Difference]: Start difference. First operand 3714 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:20:06,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:06,266 INFO L93 Difference]: Finished difference Result 3713 states and 4991 transitions. [2021-11-23 03:20:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:20:06,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 67 [2021-11-23 03:20:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:06,272 INFO L225 Difference]: With dead ends: 3713 [2021-11-23 03:20:06,272 INFO L226 Difference]: Without dead ends: 3713 [2021-11-23 03:20:06,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:20:06,273 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 3 mSDsluCounter, 5779 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7892 SdHoareTripleChecker+Invalid, 4792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:06,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7892 Invalid, 4792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4791 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2021-11-23 03:20:06,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-11-23 03:20:06,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3713. [2021-11-23 03:20:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 2838 states have (on average 1.7374911909795632) internal successors, (4931), 3683 states have internal predecessors, (4931), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:20:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 4991 transitions. [2021-11-23 03:20:06,319 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 4991 transitions. Word has length 67 [2021-11-23 03:20:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:06,320 INFO L470 AbstractCegarLoop]: Abstraction has 3713 states and 4991 transitions. [2021-11-23 03:20:06,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:20:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 4991 transitions. [2021-11-23 03:20:06,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:20:06,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:06,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:06,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-23 03:20:06,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:20:06,539 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:20:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-23 03:20:06,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:20:06,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387351995] [2021-11-23 03:20:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:06,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:20:06,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:20:06,541 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:20:06,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-23 03:20:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:06,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:20:06,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:06,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:20:06,918 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 [2021-11-23 03:20:06,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:20:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:06,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:07,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:20:07,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387351995] [2021-11-23 03:20:07,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387351995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:07,068 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:07,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:20:07,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256207492] [2021-11-23 03:20:07,068 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:07,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:20:07,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:20:07,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:20:07,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:20:07,070 INFO L87 Difference]: Start difference. First operand 3713 states and 4991 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:20:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:14,050 INFO L93 Difference]: Finished difference Result 3712 states and 4988 transitions. [2021-11-23 03:20:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:20:14,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-23 03:20:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:14,057 INFO L225 Difference]: With dead ends: 3712 [2021-11-23 03:20:14,057 INFO L226 Difference]: Without dead ends: 3712 [2021-11-23 03:20:14,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:20:14,058 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5556 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:14,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5556 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-23 03:20:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2021-11-23 03:20:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3712. [2021-11-23 03:20:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2838 states have (on average 1.7364341085271318) internal successors, (4928), 3682 states have internal predecessors, (4928), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:20:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4988 transitions. [2021-11-23 03:20:14,146 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4988 transitions. Word has length 67 [2021-11-23 03:20:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:14,147 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 4988 transitions. [2021-11-23 03:20:14,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:20:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4988 transitions. [2021-11-23 03:20:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:20:14,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:14,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:14,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:14,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:20:14,358 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:20:14,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:14,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-23 03:20:14,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:20:14,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346196924] [2021-11-23 03:20:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:14,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:20:14,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:20:14,361 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:20:14,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 03:20:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:14,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:20:14,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:14,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:20:14,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:20:14,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 03:20:14,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 03:20:14,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-23 03:20:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:14,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:15,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:20:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346196924] [2021-11-23 03:20:15,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346196924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:15,196 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:15,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 03:20:15,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156175141] [2021-11-23 03:20:15,196 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:15,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:20:15,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:20:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:20:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:20:15,197 INFO L87 Difference]: Start difference. First operand 3712 states and 4988 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:20:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:33,947 INFO L93 Difference]: Finished difference Result 3711 states and 4985 transitions. [2021-11-23 03:20:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:20:33,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 67 [2021-11-23 03:20:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:33,956 INFO L225 Difference]: With dead ends: 3711 [2021-11-23 03:20:33,956 INFO L226 Difference]: Without dead ends: 3711 [2021-11-23 03:20:33,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:20:33,958 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:33,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5567 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2021-11-23 03:20:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2021-11-23 03:20:34,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3711. [2021-11-23 03:20:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 2835 states have (on average 1.7372134038800706) internal successors, (4925), 3681 states have internal predecessors, (4925), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:20:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 4985 transitions. [2021-11-23 03:20:34,012 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 4985 transitions. Word has length 67 [2021-11-23 03:20:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:34,012 INFO L470 AbstractCegarLoop]: Abstraction has 3711 states and 4985 transitions. [2021-11-23 03:20:34,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:20:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 4985 transitions. [2021-11-23 03:20:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 03:20:34,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:34,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:34,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:34,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:20:34,231 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:20:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1243544783, now seen corresponding path program 1 times [2021-11-23 03:20:34,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:20:34,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614038562] [2021-11-23 03:20:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:34,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:20:34,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:20:34,234 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:20:34,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-23 03:20:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:34,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:20:34,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:34,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:34,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:20:34,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614038562] [2021-11-23 03:20:34,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614038562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:34,883 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:34,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:20:34,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344256919] [2021-11-23 03:20:34,884 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:34,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:20:34,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:20:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:20:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:20:34,885 INFO L87 Difference]: Start difference. First operand 3711 states and 4985 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-23 03:20:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:35,040 INFO L93 Difference]: Finished difference Result 3721 states and 5001 transitions. [2021-11-23 03:20:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:20:35,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 75 [2021-11-23 03:20:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:35,052 INFO L225 Difference]: With dead ends: 3721 [2021-11-23 03:20:35,052 INFO L226 Difference]: Without dead ends: 3721 [2021-11-23 03:20:35,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:20:35,053 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 9 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:35,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6320 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:20:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2021-11-23 03:20:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3721. [2021-11-23 03:20:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 2843 states have (on average 1.736545902215969) internal successors, (4937), 3690 states have internal predecessors, (4937), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2021-11-23 03:20:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5001 transitions. [2021-11-23 03:20:35,155 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5001 transitions. Word has length 75 [2021-11-23 03:20:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:35,156 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5001 transitions. [2021-11-23 03:20:35,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-23 03:20:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5001 transitions. [2021-11-23 03:20:35,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 03:20:35,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:35,158 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:35,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:35,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:20:35,373 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:20:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 520759535, now seen corresponding path program 1 times [2021-11-23 03:20:35,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:20:35,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398042073] [2021-11-23 03:20:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:35,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:20:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:20:35,376 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:20:35,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-23 03:20:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:35,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:20:35,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:35,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:36,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:20:36,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398042073] [2021-11-23 03:20:36,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398042073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:20:36,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1333290324] [2021-11-23 03:20:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:36,084 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:20:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:20:36,085 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:20:36,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-23 03:20:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:36,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:20:36,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:36,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:36,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1333290324] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:20:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927004927] [2021-11-23 03:20:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:36,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:20:36,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:36,764 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:20:36,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-23 03:20:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:20:37,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:37,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:37,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927004927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:20:37,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:20:37,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-23 03:20:37,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434502752] [2021-11-23 03:20:37,430 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:20:37,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:20:37,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:20:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:20:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:20:37,432 INFO L87 Difference]: Start difference. First operand 3721 states and 5001 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2021-11-23 03:20:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:38,093 INFO L93 Difference]: Finished difference Result 3735 states and 5021 transitions. [2021-11-23 03:20:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:20:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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 77 [2021-11-23 03:20:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:38,100 INFO L225 Difference]: With dead ends: 3735 [2021-11-23 03:20:38,101 INFO L226 Difference]: Without dead ends: 3729 [2021-11-23 03:20:38,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-23 03:20:38,102 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 56 mSDsluCounter, 6319 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8428 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:38,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 8428 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:20:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-11-23 03:20:38,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3727. [2021-11-23 03:20:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2849 states have (on average 1.7353457353457353) internal successors, (4944), 3696 states have internal predecessors, (4944), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2021-11-23 03:20:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5008 transitions. [2021-11-23 03:20:38,159 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5008 transitions. Word has length 77 [2021-11-23 03:20:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:38,160 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5008 transitions. [2021-11-23 03:20:38,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2021-11-23 03:20:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5008 transitions. [2021-11-23 03:20:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 03:20:38,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:38,161 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:38,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:38,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:38,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:38,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:20:38,769 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:20:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:38,769 INFO L85 PathProgramCache]: Analyzing trace with hash 991095087, now seen corresponding path program 2 times [2021-11-23 03:20:38,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:20:38,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770246398] [2021-11-23 03:20:38,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:20:38,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:20:38,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:20:38,771 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:20:38,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-23 03:20:39,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:20:39,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:20:39,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:20:39,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:39,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:40,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:20:40,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770246398] [2021-11-23 03:20:40,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770246398] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:20:40,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1742277797] [2021-11-23 03:20:40,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:20:40,127 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:20:40,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:20:40,128 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:20:40,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-23 03:20:41,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:20:41,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:20:41,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:20:41,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:41,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:41,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1742277797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:20:41,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887983880] [2021-11-23 03:20:41,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:20:41,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:20:41,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:41,465 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:20:41,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1baddc4-4058-460d-bd2c-031179abb464/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-23 03:20:57,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:20:57,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:20:57,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 03:20:57,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:58,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:20:58,312 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:20:58,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-23 03:20:58,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-23 03:22:47,084 WARN L227 SmtUtils]: Spent 24.59s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:22:47,085 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-23 03:22:47,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 79 [2021-11-23 03:22:47,802 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 03:22:47,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 38 [2021-11-23 03:22:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:22:47,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:22:50,578 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 03:22:50,578 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 63 treesize of output 62 [2021-11-23 03:22:54,008 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (_ bv1 1))))) is different from true [2021-11-23 03:27:27,073 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 03:27:27,074 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 108 treesize of output 107 [2021-11-23 03:27:30,440 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) is different from false [2021-11-23 03:27:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 15 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-23 03:27:55,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887983880] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:27:55,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:27:55,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-23 03:27:55,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107024292] [2021-11-23 03:27:55,764 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:27:55,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-23 03:27:55,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:27:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-23 03:27:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1477, Unknown=171, NotChecked=166, Total=1980 [2021-11-23 03:27:55,767 INFO L87 Difference]: Start difference. First operand 3727 states and 5008 transitions. Second operand has 45 states, 43 states have (on average 5.511627906976744) internal successors, (237), 43 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:28:00,262 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false