./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH --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 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:40,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:40,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:40,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:40,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:40,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:40,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:40,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:40,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:40,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:40,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:40,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:40,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:40,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:40,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:40,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:40,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:40,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:40,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:40,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:40,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:40,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:40,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:40,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:40,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:40,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:40,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:40,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:40,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:40,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:40,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:40,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:40,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:40,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:40,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:40,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:40,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:40,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:40,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:40,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:40,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:40,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:15:40,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:40,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:40,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:40,180 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:40,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:40,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:40,181 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:15:40,181 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:40,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:40,181 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:15:40,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:15:40,182 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:40,182 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:15:40,182 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:15:40,182 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:15:40,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:15:40,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:15:40,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:40,184 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:15:40,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:15:40,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:15:40,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:15:40,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:40,185 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:15:40,185 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:15:40,186 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:15:40,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:40,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:40,186 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:15:40,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:40,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:40,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:40,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:40,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:40,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:40,188 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:15:40,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:15:40,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:40,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:40,189 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_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f [2021-11-03 04:15:40,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:40,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:40,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:40,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:40,634 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:40,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2021-11-03 04:15:40,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data/6e2c8eb95/7ab2b86f65034d4087fd19157830acfe/FLAG5493ed6a7 [2021-11-03 04:15:41,583 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:41,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2021-11-03 04:15:41,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data/6e2c8eb95/7ab2b86f65034d4087fd19157830acfe/FLAG5493ed6a7 [2021-11-03 04:15:41,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data/6e2c8eb95/7ab2b86f65034d4087fd19157830acfe [2021-11-03 04:15:41,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:41,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:41,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:41,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:41,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:41,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:41" (1/1) ... [2021-11-03 04:15:41,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5290b5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:41, skipping insertion in model container [2021-11-03 04:15:41,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:41" (1/1) ... [2021-11-03 04:15:41,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:41,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:42,460 WARN L228 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_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2021-11-03 04:15:42,725 WARN L228 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_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2021-11-03 04:15:42,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:42,781 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) [2021-11-03 04:15:42,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e1b1c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:42, skipping insertion in model container [2021-11-03 04:15:42,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:42,783 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:15:42,786 INFO L168 Benchmark]: Toolchain (without parser) took 1038.89 ms. Allocated memory is still 104.9 MB. Free memory was 61.9 MB in the beginning and 67.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:15:42,789 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 104.9 MB. Free memory was 80.9 MB in the beginning and 80.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:15:42,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1020.46 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 67.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:15:42,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 104.9 MB. Free memory was 80.9 MB in the beginning and 80.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1020.46 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 67.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH --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 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:45,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:45,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:45,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:45,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:45,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:45,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:45,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:45,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:45,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:45,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:45,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:45,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:45,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:45,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:45,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:45,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:45,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:45,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:45,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:45,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:45,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:45,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:45,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:45,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:45,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:45,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:45,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:45,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:45,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:45,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:45,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:45,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:45,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:45,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:45,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:45,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:45,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:45,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:45,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:45,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:45,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:15:45,771 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:45,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:45,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:45,773 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:45,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:45,774 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:45,774 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:45,775 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:45,775 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:45,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:15:45,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:15:45,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:45,779 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:15:45,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:15:45,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:15:45,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:15:45,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:45,780 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:15:45,781 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:15:45,781 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:15:45,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:45,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:45,782 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:15:45,782 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:15:45,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:15:45,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:45,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:45,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:15:45,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:45,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:45,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:45,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:45,785 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:15:45,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:15:45,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:45,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:45,786 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_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f [2021-11-03 04:15:46,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:46,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:46,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:46,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:46,254 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:46,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2021-11-03 04:15:46,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data/0c3e7c3ff/462b48f7ff5f4b38aff688c447277b4a/FLAGcfd325d67 [2021-11-03 04:15:46,965 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:46,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2021-11-03 04:15:46,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data/0c3e7c3ff/462b48f7ff5f4b38aff688c447277b4a/FLAGcfd325d67 [2021-11-03 04:15:47,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/data/0c3e7c3ff/462b48f7ff5f4b38aff688c447277b4a [2021-11-03 04:15:47,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:47,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:47,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:47,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:47,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:47,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:47" (1/1) ... [2021-11-03 04:15:47,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7273cd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:47, skipping insertion in model container [2021-11-03 04:15:47,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:47" (1/1) ... [2021-11-03 04:15:47,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:47,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:47,820 WARN L228 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_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2021-11-03 04:15:48,029 WARN L228 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_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2021-11-03 04:15:48,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:48,067 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:15:48,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:48,113 WARN L228 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_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2021-11-03 04:15:48,279 WARN L228 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_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2021-11-03 04:15:48,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:48,315 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:15:48,370 WARN L228 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_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2021-11-03 04:15:48,496 WARN L228 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_ea843570-f652-4f74-a302-e91e1892a73e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2021-11-03 04:15:48,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:48,554 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:15:48,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48 WrapperNode [2021-11-03 04:15:48,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:48,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:48,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:15:48,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:15:48,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:48,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:15:48,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:15:48,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:15:48,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:15:48,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:15:48,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:15:48,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:15:48,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:48,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:15:48,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:15:49,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:15:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:15:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:15:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:15:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:15:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:15:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:15:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:15:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:15:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:15:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:15:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:15:49,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:15:58,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:15:58,139 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-11-03 04:15:58,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:15:58 BoogieIcfgContainer [2021-11-03 04:15:58,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:15:58,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:15:58,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:15:58,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:15:58,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:15:47" (1/3) ... [2021-11-03 04:15:58,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e79803f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:15:58, skipping insertion in model container [2021-11-03 04:15:58,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48" (2/3) ... [2021-11-03 04:15:58,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e79803f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:15:58, skipping insertion in model container [2021-11-03 04:15:58,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:15:58" (3/3) ... [2021-11-03 04:15:58,157 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-2.i [2021-11-03 04:15:58,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:15:58,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 838 error locations. [2021-11-03 04:15:58,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:15:58,248 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 [2021-11-03 04:15:58,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 838 error locations. [2021-11-03 04:15:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 1672 states, 833 states have (on average 2.241296518607443) internal successors, (1867), 1671 states have internal predecessors, (1867), 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) [2021-11-03 04:15:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:15:58,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:58,328 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:15:58,329 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:15:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 04:15:58,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:58,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408753291] [2021-11-03 04:15:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:58,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:58,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:58,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:15:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:58,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:15:58,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:15:58,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:15:58,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:58,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408753291] [2021-11-03 04:15:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408753291] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:58,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:58,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:15:58,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013893246] [2021-11-03 04:15:58,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:15:58,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:15:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:15:58,763 INFO L87 Difference]: Start difference. First operand has 1672 states, 833 states have (on average 2.241296518607443) internal successors, (1867), 1671 states have internal predecessors, (1867), 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:58,949 INFO L93 Difference]: Finished difference Result 1654 states and 1744 transitions. [2021-11-03 04:15:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:15:58,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 04:15:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:59,032 INFO L225 Difference]: With dead ends: 1654 [2021-11-03 04:15:59,033 INFO L226 Difference]: Without dead ends: 1652 [2021-11-03 04:15:59,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:15:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-11-03 04:15:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1652. [2021-11-03 04:15:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 824 states have (on average 2.1140776699029127) internal successors, (1742), 1651 states have internal predecessors, (1742), 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) [2021-11-03 04:15:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1742 transitions. [2021-11-03 04:15:59,260 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1742 transitions. Word has length 5 [2021-11-03 04:15:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:59,260 INFO L470 AbstractCegarLoop]: Abstraction has 1652 states and 1742 transitions. [2021-11-03 04:15:59,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1742 transitions. [2021-11-03 04:15:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:15:59,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:59,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:15:59,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:15:59,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:59,477 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:15:59,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 04:15:59,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:59,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51665054] [2021-11-03 04:15:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:59,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:59,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:59,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:59,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:15:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:59,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:15:59,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:59,769 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 [2021-11-03 04:15:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:15:59,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:15:59,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:59,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51665054] [2021-11-03 04:15:59,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51665054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:59,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:59,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:15:59,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401905021] [2021-11-03 04:15:59,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:15:59,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:15:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:15:59,842 INFO L87 Difference]: Start difference. First operand 1652 states and 1742 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:04,062 INFO L93 Difference]: Finished difference Result 1918 states and 2046 transitions. [2021-11-03 04:16:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:04,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 04:16:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:04,085 INFO L225 Difference]: With dead ends: 1918 [2021-11-03 04:16:04,090 INFO L226 Difference]: Without dead ends: 1918 [2021-11-03 04:16:04,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:04,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2021-11-03 04:16:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1637. [2021-11-03 04:16:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 900 states have (on average 1.9844444444444445) internal successors, (1786), 1636 states have internal predecessors, (1786), 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) [2021-11-03 04:16:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 1786 transitions. [2021-11-03 04:16:04,183 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 1786 transitions. Word has length 5 [2021-11-03 04:16:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:04,183 INFO L470 AbstractCegarLoop]: Abstraction has 1637 states and 1786 transitions. [2021-11-03 04:16:04,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 1786 transitions. [2021-11-03 04:16:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:16:04,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:04,186 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:16:04,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:04,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:04,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 04:16:04,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:04,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246949350] [2021-11-03 04:16:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:04,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:04,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:04,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:04,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:16:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:04,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:16:04,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:04,661 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 [2021-11-03 04:16:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:04,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:04,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:04,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246949350] [2021-11-03 04:16:04,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246949350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:04,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:04,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:16:04,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125116708] [2021-11-03 04:16:04,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:04,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:04,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:04,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:04,813 INFO L87 Difference]: Start difference. First operand 1637 states and 1786 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:12,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:12,851 INFO L93 Difference]: Finished difference Result 2221 states and 2416 transitions. [2021-11-03 04:16:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 04:16:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:12,867 INFO L225 Difference]: With dead ends: 2221 [2021-11-03 04:16:12,867 INFO L226 Difference]: Without dead ends: 2221 [2021-11-03 04:16:12,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2021-11-03 04:16:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 1793. [2021-11-03 04:16:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1066 states have (on average 1.9624765478424016) internal successors, (2092), 1792 states have internal predecessors, (2092), 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) [2021-11-03 04:16:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2092 transitions. [2021-11-03 04:16:12,928 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2092 transitions. Word has length 5 [2021-11-03 04:16:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:12,929 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 2092 transitions. [2021-11-03 04:16:12,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2092 transitions. [2021-11-03 04:16:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:16:12,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:12,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:16:12,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:13,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:13,144 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash 891404513, now seen corresponding path program 1 times [2021-11-03 04:16:13,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:13,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916827290] [2021-11-03 04:16:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:13,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:13,150 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:13,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:16:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:13,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:16:13,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:13,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:13,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:13,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916827290] [2021-11-03 04:16:13,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916827290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:13,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:13,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:16:13,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081046731] [2021-11-03 04:16:13,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:13,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:13,412 INFO L87 Difference]: Start difference. First operand 1793 states and 2092 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:13,653 INFO L93 Difference]: Finished difference Result 3383 states and 3969 transitions. [2021-11-03 04:16:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:13,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:16:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:13,676 INFO L225 Difference]: With dead ends: 3383 [2021-11-03 04:16:13,676 INFO L226 Difference]: Without dead ends: 3383 [2021-11-03 04:16:13,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:13,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2021-11-03 04:16:13,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 2756. [2021-11-03 04:16:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2029 states have (on average 1.953178905864958) internal successors, (3963), 2755 states have internal predecessors, (3963), 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) [2021-11-03 04:16:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3963 transitions. [2021-11-03 04:16:13,768 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3963 transitions. Word has length 6 [2021-11-03 04:16:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:13,769 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 3963 transitions. [2021-11-03 04:16:13,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3963 transitions. [2021-11-03 04:16:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:16:13,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:13,771 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:13,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:13,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:13,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 04:16:13,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:13,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968059383] [2021-11-03 04:16:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:13,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:13,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:13,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:14,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:16:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:14,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:16:14,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:14,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:14,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:14,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968059383] [2021-11-03 04:16:14,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968059383] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:14,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:14,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:16:14,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665154254] [2021-11-03 04:16:14,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:14,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:14,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:14,346 INFO L87 Difference]: Start difference. First operand 2756 states and 3963 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) [2021-11-03 04:16:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:14,417 INFO L93 Difference]: Finished difference Result 2696 states and 3877 transitions. [2021-11-03 04:16:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:14,418 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 [2021-11-03 04:16:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:14,438 INFO L225 Difference]: With dead ends: 2696 [2021-11-03 04:16:14,438 INFO L226 Difference]: Without dead ends: 2696 [2021-11-03 04:16:14,439 INFO L786 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 [2021-11-03 04:16:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-11-03 04:16:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2696. [2021-11-03 04:16:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 1993 states have (on average 1.9453085800301053) internal successors, (3877), 2695 states have internal predecessors, (3877), 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) [2021-11-03 04:16:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 3877 transitions. [2021-11-03 04:16:14,527 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 3877 transitions. Word has length 11 [2021-11-03 04:16:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:14,529 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 3877 transitions. [2021-11-03 04:16:14,533 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) [2021-11-03 04:16:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 3877 transitions. [2021-11-03 04:16:14,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:16:14,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:14,534 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:14,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:14,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:14,750 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 04:16:14,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:14,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378880283] [2021-11-03 04:16:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:14,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:14,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:14,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:14,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:16:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:15,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:16:15,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:15,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:15,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:15,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378880283] [2021-11-03 04:16:15,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378880283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:15,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:15,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:16:15,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752635625] [2021-11-03 04:16:15,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:16:15,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:16:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:15,147 INFO L87 Difference]: Start difference. First operand 2696 states and 3877 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) [2021-11-03 04:16:15,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:15,299 INFO L93 Difference]: Finished difference Result 2668 states and 3821 transitions. [2021-11-03 04:16:15,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:15,300 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 [2021-11-03 04:16:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:15,318 INFO L225 Difference]: With dead ends: 2668 [2021-11-03 04:16:15,323 INFO L226 Difference]: Without dead ends: 2668 [2021-11-03 04:16:15,324 INFO L786 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 [2021-11-03 04:16:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-11-03 04:16:15,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2666. [2021-11-03 04:16:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 1977 states have (on average 1.9317147192716237) internal successors, (3819), 2665 states have internal predecessors, (3819), 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) [2021-11-03 04:16:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3819 transitions. [2021-11-03 04:16:15,411 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3819 transitions. Word has length 13 [2021-11-03 04:16:15,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:15,412 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 3819 transitions. [2021-11-03 04:16:15,412 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) [2021-11-03 04:16:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3819 transitions. [2021-11-03 04:16:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:16:15,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:15,415 INFO L513 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] [2021-11-03 04:16:15,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:15,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:15,629 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:15,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 04:16:15,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:15,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801135567] [2021-11-03 04:16:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:15,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:15,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:15,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:15,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:16:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:15,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:16:15,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:15,922 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 [2021-11-03 04:16:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:16,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:16,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:16,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801135567] [2021-11-03 04:16:16,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801135567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:16,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:16,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:16:16,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677329388] [2021-11-03 04:16:16,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:16,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:16,215 INFO L87 Difference]: Start difference. First operand 2666 states and 3819 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) [2021-11-03 04:16:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:22,783 INFO L93 Difference]: Finished difference Result 4193 states and 5802 transitions. [2021-11-03 04:16:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:16:22,784 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 [2021-11-03 04:16:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:22,812 INFO L225 Difference]: With dead ends: 4193 [2021-11-03 04:16:22,812 INFO L226 Difference]: Without dead ends: 4193 [2021-11-03 04:16:22,813 INFO L786 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 [2021-11-03 04:16:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2021-11-03 04:16:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 2662. [2021-11-03 04:16:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 1977 states have (on average 1.9276681841173495) internal successors, (3811), 2661 states have internal predecessors, (3811), 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) [2021-11-03 04:16:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3811 transitions. [2021-11-03 04:16:22,942 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3811 transitions. Word has length 27 [2021-11-03 04:16:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:22,943 INFO L470 AbstractCegarLoop]: Abstraction has 2662 states and 3811 transitions. [2021-11-03 04:16:22,943 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) [2021-11-03 04:16:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3811 transitions. [2021-11-03 04:16:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:16:22,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:22,944 INFO L513 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] [2021-11-03 04:16:22,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:23,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:23,145 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:23,146 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 04:16:23,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:23,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624498098] [2021-11-03 04:16:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:23,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:23,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:23,148 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:23,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:16:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:23,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:23,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:23,401 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 [2021-11-03 04:16:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:23,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:24,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:24,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624498098] [2021-11-03 04:16:24,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624498098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:24,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:24,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:16:24,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138580115] [2021-11-03 04:16:24,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:16:24,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:16:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:16:24,232 INFO L87 Difference]: Start difference. First operand 2662 states and 3811 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:36,170 INFO L93 Difference]: Finished difference Result 3464 states and 4659 transitions. [2021-11-03 04:16:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:16:36,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 04:16:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:36,188 INFO L225 Difference]: With dead ends: 3464 [2021-11-03 04:16:36,188 INFO L226 Difference]: Without dead ends: 3464 [2021-11-03 04:16:36,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:16:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2021-11-03 04:16:36,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2658. [2021-11-03 04:16:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 1977 states have (on average 1.9236216489630753) internal successors, (3803), 2657 states have internal predecessors, (3803), 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) [2021-11-03 04:16:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3803 transitions. [2021-11-03 04:16:36,263 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3803 transitions. Word has length 27 [2021-11-03 04:16:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:36,263 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 3803 transitions. [2021-11-03 04:16:36,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:36,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3803 transitions. [2021-11-03 04:16:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:16:36,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:36,266 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:36,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 04:16:36,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:36,482 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:36,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 04:16:36,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:36,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416624552] [2021-11-03 04:16:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:36,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:36,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:36,484 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:36,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:16:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:36,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:16:36,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:37,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:37,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:37,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416624552] [2021-11-03 04:16:37,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416624552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:37,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:37,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:16:37,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645316761] [2021-11-03 04:16:37,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:37,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:37,214 INFO L87 Difference]: Start difference. First operand 2658 states and 3803 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:37,313 INFO L93 Difference]: Finished difference Result 2646 states and 3783 transitions. [2021-11-03 04:16:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:16:37,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 04:16:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:37,342 INFO L225 Difference]: With dead ends: 2646 [2021-11-03 04:16:37,342 INFO L226 Difference]: Without dead ends: 2646 [2021-11-03 04:16:37,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-11-03 04:16:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2646. [2021-11-03 04:16:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2646 states, 1965 states have (on average 1.9251908396946564) internal successors, (3783), 2645 states have internal predecessors, (3783), 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) [2021-11-03 04:16:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3783 transitions. [2021-11-03 04:16:37,431 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3783 transitions. Word has length 42 [2021-11-03 04:16:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:37,433 INFO L470 AbstractCegarLoop]: Abstraction has 2646 states and 3783 transitions. [2021-11-03 04:16:37,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3783 transitions. [2021-11-03 04:16:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:16:37,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:37,440 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:37,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:37,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:37,656 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 04:16:37,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:37,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220340990] [2021-11-03 04:16:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:37,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:37,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:37,659 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:37,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:16:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:38,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:16:38,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:38,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:39,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:39,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220340990] [2021-11-03 04:16:39,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220340990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:39,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:39,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:16:39,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962951353] [2021-11-03 04:16:39,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:39,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:39,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:39,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:39,162 INFO L87 Difference]: Start difference. First operand 2646 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:39,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:39,425 INFO L93 Difference]: Finished difference Result 2657 states and 3632 transitions. [2021-11-03 04:16:39,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:39,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 04:16:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:39,436 INFO L225 Difference]: With dead ends: 2657 [2021-11-03 04:16:39,436 INFO L226 Difference]: Without dead ends: 2657 [2021-11-03 04:16:39,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2021-11-03 04:16:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2462. [2021-11-03 04:16:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 1781 states have (on average 1.9247613700168444) internal successors, (3428), 2461 states have internal predecessors, (3428), 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) [2021-11-03 04:16:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3428 transitions. [2021-11-03 04:16:39,493 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3428 transitions. Word has length 50 [2021-11-03 04:16:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:39,494 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 3428 transitions. [2021-11-03 04:16:39,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3428 transitions. [2021-11-03 04:16:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:16:39,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:39,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:39,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-03 04:16:39,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:39,711 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:16:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 04:16:39,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:39,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45412018] [2021-11-03 04:16:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:39,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:39,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:39,714 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:39,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:16:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:40,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:16:40,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:40,272 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 [2021-11-03 04:16:40,281 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 [2021-11-03 04:16:41,284 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:16:41,285 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 28 treesize of output 30 [2021-11-03 04:16:41,299 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:16:41,300 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 27 treesize of output 23 [2021-11-03 04:16:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:41,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:48,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:48,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45412018] [2021-11-03 04:16:48,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45412018] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:48,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:48,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:16:48,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221253426] [2021-11-03 04:16:48,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:16:48,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:48,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:16:48,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-03 04:16:48,877 INFO L87 Difference]: Start difference. First operand 2462 states and 3428 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:16,041 INFO L93 Difference]: Finished difference Result 4196 states and 5717 transitions. [2021-11-03 04:17:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:17:16,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 04:17:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:16,054 INFO L225 Difference]: With dead ends: 4196 [2021-11-03 04:17:16,054 INFO L226 Difference]: Without dead ends: 4196 [2021-11-03 04:17:16,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-03 04:17:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2021-11-03 04:17:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 2620. [2021-11-03 04:17:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 1977 states have (on average 1.8786039453717753) internal successors, (3714), 2619 states have internal predecessors, (3714), 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) [2021-11-03 04:17:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3714 transitions. [2021-11-03 04:17:16,130 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3714 transitions. Word has length 53 [2021-11-03 04:17:16,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:16,131 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 3714 transitions. [2021-11-03 04:17:16,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3714 transitions. [2021-11-03 04:17:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:17:16,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:16,133 INFO L513 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] [2021-11-03 04:17:16,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 04:17:16,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:16,354 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:17:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 04:17:16,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:16,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908736964] [2021-11-03 04:17:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:16,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:16,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:16,362 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:16,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:17:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:16,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:17:16,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:17,044 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 [2021-11-03 04:17:17,068 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 21 treesize of output 17 [2021-11-03 04:17:17,125 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 23 treesize of output 11 [2021-11-03 04:17:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:17,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:17,345 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:17,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908736964] [2021-11-03 04:17:17,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908736964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:17,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:17,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:17:17,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108972479] [2021-11-03 04:17:17,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:17:17,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:17:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:17:17,348 INFO L87 Difference]: Start difference. First operand 2620 states and 3714 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 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) [2021-11-03 04:17:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:26,932 INFO L93 Difference]: Finished difference Result 3735 states and 5105 transitions. [2021-11-03 04:17:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:17:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 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 [2021-11-03 04:17:26,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:26,940 INFO L225 Difference]: With dead ends: 3735 [2021-11-03 04:17:26,940 INFO L226 Difference]: Without dead ends: 3735 [2021-11-03 04:17:26,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2021-11-03 04:17:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 2619. [2021-11-03 04:17:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1977 states have (on average 1.877592311583207) internal successors, (3712), 2618 states have internal predecessors, (3712), 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) [2021-11-03 04:17:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3712 transitions. [2021-11-03 04:17:27,003 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3712 transitions. Word has length 59 [2021-11-03 04:17:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:27,004 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3712 transitions. [2021-11-03 04:17:27,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 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) [2021-11-03 04:17:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3712 transitions. [2021-11-03 04:17:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:17:27,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:27,005 INFO L513 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] [2021-11-03 04:17:27,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:27,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:27,222 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:17:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:27,223 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 04:17:27,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:27,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262921767] [2021-11-03 04:17:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:27,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:27,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:27,225 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:27,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:17:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:27,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:17:27,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:27,955 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 [2021-11-03 04:17:27,992 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 [2021-11-03 04:17:28,014 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 19 treesize of output 15 [2021-11-03 04:17:28,088 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 [2021-11-03 04:17:28,092 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 [2021-11-03 04:17:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:28,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:28,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:28,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262921767] [2021-11-03 04:17:28,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262921767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:28,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:28,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:17:28,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860836752] [2021-11-03 04:17:28,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:17:28,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:17:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:17:28,900 INFO L87 Difference]: Start difference. First operand 2619 states and 3712 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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) [2021-11-03 04:18:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:06,332 INFO L93 Difference]: Finished difference Result 3498 states and 4765 transitions. [2021-11-03 04:18:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:18:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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 60 [2021-11-03 04:18:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:06,343 INFO L225 Difference]: With dead ends: 3498 [2021-11-03 04:18:06,343 INFO L226 Difference]: Without dead ends: 3498 [2021-11-03 04:18:06,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:18:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2021-11-03 04:18:06,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2618. [2021-11-03 04:18:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 1977 states have (on average 1.8765806777946383) internal successors, (3710), 2617 states have internal predecessors, (3710), 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) [2021-11-03 04:18:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3710 transitions. [2021-11-03 04:18:06,411 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3710 transitions. Word has length 60 [2021-11-03 04:18:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:06,412 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 3710 transitions. [2021-11-03 04:18:06,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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) [2021-11-03 04:18:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3710 transitions. [2021-11-03 04:18:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:18:06,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:06,417 INFO L513 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] [2021-11-03 04:18:06,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:06,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:06,630 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:18:06,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:06,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 04:18:06,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:06,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101075514] [2021-11-03 04:18:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:06,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:06,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:06,634 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:18:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:07,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:18:07,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:07,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:07,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:07,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101075514] [2021-11-03 04:18:07,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101075514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:07,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:07,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:18:07,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483004456] [2021-11-03 04:18:07,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:18:07,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:18:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:18:07,677 INFO L87 Difference]: Start difference. First operand 2618 states and 3710 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) 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) [2021-11-03 04:18:08,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:08,189 INFO L93 Difference]: Finished difference Result 3752 states and 5115 transitions. [2021-11-03 04:18:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:18:08,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) 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 64 [2021-11-03 04:18:08,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:08,203 INFO L225 Difference]: With dead ends: 3752 [2021-11-03 04:18:08,203 INFO L226 Difference]: Without dead ends: 3752 [2021-11-03 04:18:08,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:18:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-11-03 04:18:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 2636. [2021-11-03 04:18:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 1995 states have (on average 1.868671679197995) internal successors, (3728), 2635 states have internal predecessors, (3728), 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) [2021-11-03 04:18:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3728 transitions. [2021-11-03 04:18:08,275 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3728 transitions. Word has length 64 [2021-11-03 04:18:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:08,277 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3728 transitions. [2021-11-03 04:18:08,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) 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) [2021-11-03 04:18:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3728 transitions. [2021-11-03 04:18:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:18:08,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:08,279 INFO L513 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] [2021-11-03 04:18:08,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:08,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:08,492 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:18:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 04:18:08,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:08,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949033923] [2021-11-03 04:18:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:08,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:08,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:08,495 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:08,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:18:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:09,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:18:09,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:09,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:09,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:09,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949033923] [2021-11-03 04:18:09,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949033923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:18:09,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [497054260] [2021-11-03 04:18:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:09,728 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:18:09,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:18:09,743 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:18:09,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 04:18:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:10,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:18:10,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:10,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:10,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [497054260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:18:10,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232630400] [2021-11-03 04:18:10,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:10,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:18:10,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:18:10,871 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:18:10,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 04:18:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:11,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:18:11,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:11,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:11,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232630400] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:18:11,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:18:11,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 04:18:11,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112550510] [2021-11-03 04:18:11,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:18:11,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:18:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:18:11,976 INFO L87 Difference]: Start difference. First operand 2636 states and 3728 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2021-11-03 04:18:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:12,814 INFO L93 Difference]: Finished difference Result 3788 states and 5151 transitions. [2021-11-03 04:18:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:18:12,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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 66 [2021-11-03 04:18:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:12,825 INFO L225 Difference]: With dead ends: 3788 [2021-11-03 04:18:12,826 INFO L226 Difference]: Without dead ends: 3788 [2021-11-03 04:18:12,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:18:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2021-11-03 04:18:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2672. [2021-11-03 04:18:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2031 states have (on average 1.8532742491383556) internal successors, (3764), 2671 states have internal predecessors, (3764), 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) [2021-11-03 04:18:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3764 transitions. [2021-11-03 04:18:12,899 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3764 transitions. Word has length 66 [2021-11-03 04:18:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:12,899 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 3764 transitions. [2021-11-03 04:18:12,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2021-11-03 04:18:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3764 transitions. [2021-11-03 04:18:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:18:12,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:12,901 INFO L513 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] [2021-11-03 04:18:12,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:13,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-03 04:18:13,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:13,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:18:13,520 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:18:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 04:18:13,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:13,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267015877] [2021-11-03 04:18:13,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:18:13,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:13,524 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:13,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:18:14,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:18:14,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:18:14,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:18:14,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:15,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:15,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:15,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267015877] [2021-11-03 04:18:15,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267015877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:18:15,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1820573082] [2021-11-03 04:18:15,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:18:15,897 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:18:15,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:18:15,902 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:18:15,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 04:18:18,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:18:18,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:18:18,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:18:18,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:18,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:18,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1820573082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:18:18,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944889746] [2021-11-03 04:18:18,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:18:18,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:18:18,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:18:18,663 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:18:18,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 04:18:29,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:18:29,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:18:29,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:18:29,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:29,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:29,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944889746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:18:29,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:18:29,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-03 04:18:29,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286439582] [2021-11-03 04:18:29,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:18:29,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:29,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:18:29,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:18:29,727 INFO L87 Difference]: Start difference. First operand 2672 states and 3764 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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) [2021-11-03 04:18:34,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:34,383 INFO L93 Difference]: Finished difference Result 3860 states and 5223 transitions. [2021-11-03 04:18:34,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 04:18:34,384 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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 70 [2021-11-03 04:18:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:34,393 INFO L225 Difference]: With dead ends: 3860 [2021-11-03 04:18:34,394 INFO L226 Difference]: Without dead ends: 3860 [2021-11-03 04:18:34,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=370, Invalid=622, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:18:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2021-11-03 04:18:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 2744. [2021-11-03 04:18:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2103 states have (on average 1.8240608654303376) internal successors, (3836), 2743 states have internal predecessors, (3836), 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) [2021-11-03 04:18:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 3836 transitions. [2021-11-03 04:18:34,447 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 3836 transitions. Word has length 70 [2021-11-03 04:18:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:34,447 INFO L470 AbstractCegarLoop]: Abstraction has 2744 states and 3836 transitions. [2021-11-03 04:18:34,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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) [2021-11-03 04:18:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 3836 transitions. [2021-11-03 04:18:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 04:18:34,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:34,449 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:34,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:34,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:34,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-03 04:18:35,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:18:35,069 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 834 more)] === [2021-11-03 04:18:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:35,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996130, now seen corresponding path program 3 times [2021-11-03 04:18:35,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:35,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848660804] [2021-11-03 04:18:35,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:18:35,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:35,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:35,071 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:35,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:18:36,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 04:18:36,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:18:36,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:18:36,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:37,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:38,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:38,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848660804] [2021-11-03 04:18:38,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848660804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:18:38,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1244141108] [2021-11-03 04:18:38,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:18:38,918 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:18:38,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:18:38,941 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:18:38,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 04:18:49,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 04:18:49,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:18:49,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:18:49,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:49,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:49,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1244141108] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:18:49,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376267364] [2021-11-03 04:18:49,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:18:49,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:18:49,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:18:49,663 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:18:49,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea843570-f652-4f74-a302-e91e1892a73e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process