./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/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 bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:38:23,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:38:23,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:38:23,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:38:23,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:38:23,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:38:23,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:38:23,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:38:23,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:38:23,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:38:23,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:38:23,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:38:23,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:38:23,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:38:23,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:38:23,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:38:23,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:38:23,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:38:23,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:38:23,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:38:23,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:38:23,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:38:23,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:38:23,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:38:23,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:38:23,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:38:23,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:38:23,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:38:23,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:38:23,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:38:23,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:38:23,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:38:23,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:38:23,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:38:23,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:38:23,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:38:23,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:38:23,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:38:23,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:38:23,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:38:23,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:38:23,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 05:38:23,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:38:23,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:38:23,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:38:23,221 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:38:23,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:38:23,221 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:38:23,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:38:23,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:38:23,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:38:23,222 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:38:23,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:38:23,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:38:23,224 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:38:23,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:38:23,224 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:38:23,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:38:23,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:38:23,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:38:23,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:38:23,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:38:23,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:38:23,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:38:23,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:38:23,227 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:38:23,227 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:38:23,227 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:38:23,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:38:23,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:38:23,229 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:38:23,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:38:23,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:38:23,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:38:23,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:38:23,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:38:23,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:38:23,231 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:38:23,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:38:23,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:38:23,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:38:23,232 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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2021-11-03 05:38:23,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:38:23,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:38:23,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:38:23,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:38:23,499 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:38:23,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2021-11-03 05:38:23,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data/14400b196/4f21c70959d24839ab15b8d19236156f/FLAGdc64966b6 [2021-11-03 05:38:24,153 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:38:24,153 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2021-11-03 05:38:24,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data/14400b196/4f21c70959d24839ab15b8d19236156f/FLAGdc64966b6 [2021-11-03 05:38:24,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data/14400b196/4f21c70959d24839ab15b8d19236156f [2021-11-03 05:38:24,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:38:24,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:38:24,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:38:24,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:38:24,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:38:24,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:38:24" (1/1) ... [2021-11-03 05:38:24,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f18eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:24, skipping insertion in model container [2021-11-03 05:38:24,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:38:24" (1/1) ... [2021-11-03 05:38:24,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:38:24,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:38:24,882 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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2021-11-03 05:38:25,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:38:25,095 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 05:38:25,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@793aa6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:25, skipping insertion in model container [2021-11-03 05:38:25,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:38:25,099 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:38:25,101 INFO L168 Benchmark]: Toolchain (without parser) took 699.82 ms. Allocated memory is still 121.6 MB. Free memory was 84.1 MB in the beginning and 85.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:25,103 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 121.6 MB. Free memory was 95.3 MB in the beginning and 95.3 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:38:25,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.44 ms. Allocated memory is still 121.6 MB. Free memory was 83.8 MB in the beginning and 85.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:25,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 121.6 MB. Free memory was 95.3 MB in the beginning and 95.3 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 696.44 ms. Allocated memory is still 121.6 MB. Free memory was 83.8 MB in the beginning and 85.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/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 bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:38:27,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:38:27,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:38:27,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:38:27,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:38:27,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:38:27,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:38:27,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:38:27,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:38:27,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:38:27,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:38:27,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:38:27,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:38:27,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:38:27,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:38:27,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:38:27,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:38:27,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:38:27,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:38:27,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:38:27,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:38:27,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:38:27,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:38:27,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:38:27,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:38:27,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:38:27,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:38:27,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:38:27,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:38:27,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:38:27,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:38:27,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:38:27,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:38:27,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:38:27,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:38:27,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:38:27,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:38:27,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:38:27,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:38:27,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:38:27,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:38:27,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 05:38:27,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:38:27,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:38:27,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:38:27,404 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:38:27,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:38:27,404 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:38:27,404 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:38:27,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:38:27,405 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:38:27,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:38:27,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:38:27,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:38:27,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:38:27,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:38:27,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:38:27,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:38:27,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:38:27,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:38:27,408 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:38:27,408 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:38:27,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:38:27,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:38:27,408 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:38:27,409 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:38:27,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:38:27,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:38:27,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:38:27,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:38:27,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:38:27,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:38:27,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:38:27,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:38:27,411 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:38:27,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:38:27,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:38:27,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:38:27,412 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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2021-11-03 05:38:27,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:38:27,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:38:27,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:38:27,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:38:27,840 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:38:27,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2021-11-03 05:38:27,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data/8149a96e4/04a109eb9d0744cc9c5ecdd05469f0de/FLAGd73594301 [2021-11-03 05:38:28,492 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:38:28,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2021-11-03 05:38:28,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data/8149a96e4/04a109eb9d0744cc9c5ecdd05469f0de/FLAGd73594301 [2021-11-03 05:38:28,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/data/8149a96e4/04a109eb9d0744cc9c5ecdd05469f0de [2021-11-03 05:38:28,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:38:28,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:38:28,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:38:28,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:38:28,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:38:28,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:38:28" (1/1) ... [2021-11-03 05:38:28,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ebce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:28, skipping insertion in model container [2021-11-03 05:38:28,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:38:28" (1/1) ... [2021-11-03 05:38:28,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:38:28,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:38:29,280 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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2021-11-03 05:38:29,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:38:29,516 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:38:29,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:38:29,590 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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2021-11-03 05:38:29,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:38:29,711 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:38:29,747 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_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2021-11-03 05:38:29,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:38:29,903 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:38:29,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29 WrapperNode [2021-11-03 05:38:29,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:38:29,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:38:29,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:38:29,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:38:29,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:29,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:38:30,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:38:30,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:38:30,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:38:30,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:38:30,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:38:30,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:38:30,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:38:30,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:30,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:38:30,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:38:30,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:38:30,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:38:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:38:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:38:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:38:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:38:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:38:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:38:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:38:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:38:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:38:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:38:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:38:36,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:38:36,661 INFO L299 CfgBuilder]: Removed 115 assume(true) statements. [2021-11-03 05:38:36,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:38:36 BoogieIcfgContainer [2021-11-03 05:38:36,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:38:36,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:38:36,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:38:36,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:38:36,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:38:28" (1/3) ... [2021-11-03 05:38:36,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f10ca46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:38:36, skipping insertion in model container [2021-11-03 05:38:36,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29" (2/3) ... [2021-11-03 05:38:36,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f10ca46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:38:36, skipping insertion in model container [2021-11-03 05:38:36,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:38:36" (3/3) ... [2021-11-03 05:38:36,680 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-3.i [2021-11-03 05:38:36,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:38:36,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 860 error locations. [2021-11-03 05:38:36,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:38:36,744 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 05:38:36,745 INFO L340 AbstractCegarLoop]: Starting to check reachability of 860 error locations. [2021-11-03 05:38:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 1678 states, 817 states have (on average 2.2717258261933906) internal successors, (1856), 1677 states have internal predecessors, (1856), 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 05:38:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:38:36,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:36,818 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:38:36,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:38:36,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 05:38:36,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:36,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030321574] [2021-11-03 05:38:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:36,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:36,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:36,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:36,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:38:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:37,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:38:37,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:37,145 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 05:38:37,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:38:37,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:37,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030321574] [2021-11-03 05:38:37,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030321574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:37,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:37,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:38:37,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089449963] [2021-11-03 05:38:37,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:38:37,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:38:37,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:38:37,194 INFO L87 Difference]: Start difference. First operand has 1678 states, 817 states have (on average 2.2717258261933906) internal successors, (1856), 1677 states have internal predecessors, (1856), 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 05:38:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:37,277 INFO L93 Difference]: Finished difference Result 1660 states and 1744 transitions. [2021-11-03 05:38:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:38:37,282 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 05:38:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:37,312 INFO L225 Difference]: With dead ends: 1660 [2021-11-03 05:38:37,313 INFO L226 Difference]: Without dead ends: 1658 [2021-11-03 05:38:37,314 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 05:38:37,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2021-11-03 05:38:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1658. [2021-11-03 05:38:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 808 states have (on average 2.155940594059406) internal successors, (1742), 1657 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 05:38:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 1742 transitions. [2021-11-03 05:38:37,422 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 1742 transitions. Word has length 5 [2021-11-03 05:38:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:37,422 INFO L470 AbstractCegarLoop]: Abstraction has 1658 states and 1742 transitions. [2021-11-03 05:38:37,423 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 05:38:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 1742 transitions. [2021-11-03 05:38:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:38:37,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:37,423 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:38:37,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:38:37,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:37,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:38:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 05:38:37,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:37,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310819595] [2021-11-03 05:38:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:37,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:37,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:37,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:37,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:38:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:37,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:38:37,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:37,874 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 05:38:37,890 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 05:38:37,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:37,913 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 05:38:37,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:37,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310819595] [2021-11-03 05:38:37,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310819595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:37,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:37,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:38:37,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410719288] [2021-11-03 05:38:37,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:38:37,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:38:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:38:37,920 INFO L87 Difference]: Start difference. First operand 1658 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 05:38:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:40,676 INFO L93 Difference]: Finished difference Result 1695 states and 1792 transitions. [2021-11-03 05:38:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:38:40,678 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 05:38:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:40,686 INFO L225 Difference]: With dead ends: 1695 [2021-11-03 05:38:40,686 INFO L226 Difference]: Without dead ends: 1695 [2021-11-03 05:38:40,687 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 05:38:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-03 05:38:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1641. [2021-11-03 05:38:40,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 884 states have (on average 2.018099547511312) internal successors, (1784), 1640 states have internal predecessors, (1784), 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 05:38:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1784 transitions. [2021-11-03 05:38:40,737 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1784 transitions. Word has length 5 [2021-11-03 05:38:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:40,737 INFO L470 AbstractCegarLoop]: Abstraction has 1641 states and 1784 transitions. [2021-11-03 05:38:40,737 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 05:38:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1784 transitions. [2021-11-03 05:38:40,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:38:40,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:40,738 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:38:40,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:40,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:40,955 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:38:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 05:38:40,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:40,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110521945] [2021-11-03 05:38:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:40,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:40,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:40,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:40,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:38:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:41,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:38:41,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:41,170 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 05:38:41,193 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 05:38:41,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:41,258 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 05:38:41,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:41,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110521945] [2021-11-03 05:38:41,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110521945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:41,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:41,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 05:38:41,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221532943] [2021-11-03 05:38:41,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:38:41,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:38:41,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:38:41,260 INFO L87 Difference]: Start difference. First operand 1641 states and 1784 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 05:38:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:48,401 INFO L93 Difference]: Finished difference Result 1998 states and 2162 transitions. [2021-11-03 05:38:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:38:48,403 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 05:38:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:48,413 INFO L225 Difference]: With dead ends: 1998 [2021-11-03 05:38:48,413 INFO L226 Difference]: Without dead ends: 1998 [2021-11-03 05:38:48,413 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 05:38:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-11-03 05:38:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1797. [2021-11-03 05:38:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1050 states have (on average 1.9904761904761905) internal successors, (2090), 1796 states have internal predecessors, (2090), 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 05:38:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2090 transitions. [2021-11-03 05:38:48,453 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2090 transitions. Word has length 5 [2021-11-03 05:38:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:48,453 INFO L470 AbstractCegarLoop]: Abstraction has 1797 states and 2090 transitions. [2021-11-03 05:38:48,453 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 05:38:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2090 transitions. [2021-11-03 05:38:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:38:48,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:48,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:38:48,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 05:38:48,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:48,687 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:38:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash 891404513, now seen corresponding path program 1 times [2021-11-03 05:38:48,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:48,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40165489] [2021-11-03 05:38:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:48,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:48,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:48,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:48,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:38:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:48,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:38:48,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:48,907 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 05:38:48,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:38:48,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:48,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40165489] [2021-11-03 05:38:48,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40165489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:48,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:48,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:38:48,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963025149] [2021-11-03 05:38:48,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:38:48,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:38:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:38:48,943 INFO L87 Difference]: Start difference. First operand 1797 states and 2090 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 05:38:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:49,047 INFO L93 Difference]: Finished difference Result 3160 states and 3716 transitions. [2021-11-03 05:38:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:38:49,048 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 05:38:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:49,063 INFO L225 Difference]: With dead ends: 3160 [2021-11-03 05:38:49,063 INFO L226 Difference]: Without dead ends: 3160 [2021-11-03 05:38:49,063 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 05:38:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2021-11-03 05:38:49,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 2631. [2021-11-03 05:38:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 1884 states have (on average 1.9723991507430998) internal successors, (3716), 2630 states have internal predecessors, (3716), 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 05:38:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3716 transitions. [2021-11-03 05:38:49,127 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3716 transitions. Word has length 6 [2021-11-03 05:38:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:49,128 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 3716 transitions. [2021-11-03 05:38:49,128 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 05:38:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3716 transitions. [2021-11-03 05:38:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:38:49,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:49,129 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:49,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:49,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:49,340 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:38:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 05:38:49,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:49,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915064846] [2021-11-03 05:38:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:49,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:49,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:49,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:49,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:38:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:49,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:38:49,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:49,564 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 05:38:49,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:49,600 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 05:38:49,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:49,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915064846] [2021-11-03 05:38:49,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915064846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:49,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:49,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:38:49,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530238754] [2021-11-03 05:38:49,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:38:49,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:38:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:38:49,613 INFO L87 Difference]: Start difference. First operand 2631 states and 3716 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 05:38:49,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:49,652 INFO L93 Difference]: Finished difference Result 2571 states and 3630 transitions. [2021-11-03 05:38:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:38:49,653 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 05:38:49,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:49,666 INFO L225 Difference]: With dead ends: 2571 [2021-11-03 05:38:49,666 INFO L226 Difference]: Without dead ends: 2571 [2021-11-03 05:38:49,666 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 05:38:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-11-03 05:38:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2571. [2021-11-03 05:38:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 1848 states have (on average 1.9642857142857142) internal successors, (3630), 2570 states have internal predecessors, (3630), 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 05:38:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3630 transitions. [2021-11-03 05:38:49,718 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3630 transitions. Word has length 11 [2021-11-03 05:38:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:49,719 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 3630 transitions. [2021-11-03 05:38:49,719 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 05:38:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3630 transitions. [2021-11-03 05:38:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:38:49,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:49,720 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:49,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:49,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:49,934 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:38:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 05:38:49,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:49,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672856919] [2021-11-03 05:38:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:49,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:49,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:49,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:49,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:38:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:50,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:38:50,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:50,190 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 05:38:50,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:50,225 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 05:38:50,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:50,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672856919] [2021-11-03 05:38:50,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672856919] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:50,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:50,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:38:50,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375671599] [2021-11-03 05:38:50,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:38:50,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:38:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:38:50,228 INFO L87 Difference]: Start difference. First operand 2571 states and 3630 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 05:38:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:50,315 INFO L93 Difference]: Finished difference Result 2543 states and 3574 transitions. [2021-11-03 05:38:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:38:50,316 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 05:38:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:50,328 INFO L225 Difference]: With dead ends: 2543 [2021-11-03 05:38:50,329 INFO L226 Difference]: Without dead ends: 2543 [2021-11-03 05:38:50,329 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 05:38:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2021-11-03 05:38:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2541. [2021-11-03 05:38:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 1832 states have (on average 1.9497816593886463) internal successors, (3572), 2540 states have internal predecessors, (3572), 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 05:38:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3572 transitions. [2021-11-03 05:38:50,377 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3572 transitions. Word has length 13 [2021-11-03 05:38:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:50,378 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3572 transitions. [2021-11-03 05:38:50,378 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 05:38:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3572 transitions. [2021-11-03 05:38:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:38:50,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:50,379 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 05:38:50,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:50,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:50,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:38:50,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 05:38:50,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:50,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537982676] [2021-11-03 05:38:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:50,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:50,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:50,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:50,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:38:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:50,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:38:50,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:50,801 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 05:38:50,915 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 05:38:50,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:38:51,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:51,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537982676] [2021-11-03 05:38:51,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537982676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:51,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:51,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:38:51,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099005106] [2021-11-03 05:38:51,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:38:51,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:38:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:38:51,010 INFO L87 Difference]: Start difference. First operand 2541 states and 3572 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 05:38:54,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:54,593 INFO L93 Difference]: Finished difference Result 3580 states and 4803 transitions. [2021-11-03 05:38:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:38:54,594 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 05:38:54,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:54,634 INFO L225 Difference]: With dead ends: 3580 [2021-11-03 05:38:54,635 INFO L226 Difference]: Without dead ends: 3580 [2021-11-03 05:38:54,635 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 05:38:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2021-11-03 05:38:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 2537. [2021-11-03 05:38:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 1832 states have (on average 1.945414847161572) internal successors, (3564), 2536 states have internal predecessors, (3564), 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 05:38:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3564 transitions. [2021-11-03 05:38:54,694 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3564 transitions. Word has length 27 [2021-11-03 05:38:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:54,695 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3564 transitions. [2021-11-03 05:38:54,695 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 05:38:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3564 transitions. [2021-11-03 05:38:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:38:54,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:54,698 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 05:38:54,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:54,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:54,911 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:38:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 05:38:54,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:54,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810768298] [2021-11-03 05:38:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:54,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:54,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:54,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:54,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:38:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:55,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:38:55,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:55,143 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 05:38:55,380 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 05:38:55,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:38:55,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:55,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810768298] [2021-11-03 05:38:55,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810768298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:55,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:55,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:38:55,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744591722] [2021-11-03 05:38:55,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:38:55,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:38:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:38:55,781 INFO L87 Difference]: Start difference. First operand 2537 states and 3564 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 05:39:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:39:05,219 INFO L93 Difference]: Finished difference Result 3214 states and 4165 transitions. [2021-11-03 05:39:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:39:05,220 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 05:39:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:39:05,231 INFO L225 Difference]: With dead ends: 3214 [2021-11-03 05:39:05,231 INFO L226 Difference]: Without dead ends: 3214 [2021-11-03 05:39:05,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:39:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2021-11-03 05:39:05,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 2533. [2021-11-03 05:39:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1832 states have (on average 1.9410480349344978) internal successors, (3556), 2532 states have internal predecessors, (3556), 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 05:39:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3556 transitions. [2021-11-03 05:39:05,278 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3556 transitions. Word has length 27 [2021-11-03 05:39:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:39:05,278 INFO L470 AbstractCegarLoop]: Abstraction has 2533 states and 3556 transitions. [2021-11-03 05:39:05,281 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 05:39:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3556 transitions. [2021-11-03 05:39:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:39:05,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:39:05,282 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 05:39:05,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:39:05,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:39:05,497 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:39:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:39:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 05:39:05,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:39:05,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620741986] [2021-11-03 05:39:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:39:05,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:39:05,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:39:05,504 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:39:05,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:39:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:39:05,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:39:05,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:39:05,899 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 05:39:05,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:39:06,012 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 05:39:06,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:39:06,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620741986] [2021-11-03 05:39:06,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620741986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:39:06,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:39:06,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:39:06,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174073518] [2021-11-03 05:39:06,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:39:06,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:39:06,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:39:06,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:39:06,014 INFO L87 Difference]: Start difference. First operand 2533 states and 3556 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 05:39:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:39:06,072 INFO L93 Difference]: Finished difference Result 2521 states and 3536 transitions. [2021-11-03 05:39:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:39:06,072 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 05:39:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:39:06,083 INFO L225 Difference]: With dead ends: 2521 [2021-11-03 05:39:06,083 INFO L226 Difference]: Without dead ends: 2521 [2021-11-03 05:39:06,083 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 05:39:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-11-03 05:39:06,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2521. [2021-11-03 05:39:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 1820 states have (on average 1.9428571428571428) internal successors, (3536), 2520 states have internal predecessors, (3536), 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 05:39:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3536 transitions. [2021-11-03 05:39:06,120 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3536 transitions. Word has length 42 [2021-11-03 05:39:06,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:39:06,120 INFO L470 AbstractCegarLoop]: Abstraction has 2521 states and 3536 transitions. [2021-11-03 05:39:06,120 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 05:39:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3536 transitions. [2021-11-03 05:39:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:39:06,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:39:06,122 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 05:39:06,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:39:06,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:39:06,335 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:39:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:39:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 05:39:06,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:39:06,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559213556] [2021-11-03 05:39:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:39:06,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:39:06,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:39:06,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:39:06,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:39:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:39:06,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:39:06,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:39:07,009 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 05:39:07,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:39:07,360 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 05:39:07,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:39:07,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559213556] [2021-11-03 05:39:07,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559213556] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:39:07,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:39:07,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:39:07,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42724432] [2021-11-03 05:39:07,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:39:07,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:39:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:39:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:39:07,362 INFO L87 Difference]: Start difference. First operand 2521 states and 3536 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 05:39:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:39:07,605 INFO L93 Difference]: Finished difference Result 2710 states and 3571 transitions. [2021-11-03 05:39:07,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:39:07,606 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 05:39:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:39:07,622 INFO L225 Difference]: With dead ends: 2710 [2021-11-03 05:39:07,628 INFO L226 Difference]: Without dead ends: 2710 [2021-11-03 05:39:07,628 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 05:39:07,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-11-03 05:39:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2337. [2021-11-03 05:39:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 1636 states have (on average 1.9443765281173595) internal successors, (3181), 2336 states have internal predecessors, (3181), 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 05:39:07,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3181 transitions. [2021-11-03 05:39:07,671 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3181 transitions. Word has length 50 [2021-11-03 05:39:07,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:39:07,672 INFO L470 AbstractCegarLoop]: Abstraction has 2337 states and 3181 transitions. [2021-11-03 05:39:07,672 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 05:39:07,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3181 transitions. [2021-11-03 05:39:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 05:39:07,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:39:07,679 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 05:39:07,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:39:07,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:39:07,892 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:39:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:39:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 05:39:07,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:39:07,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053269697] [2021-11-03 05:39:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:39:07,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:39:07,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:39:07,902 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:39:07,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:39:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:39:08,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:39:08,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:39:08,401 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 05:39:08,409 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 05:39:09,053 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 05:39:09,054 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 05:39:09,060 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:39:09,060 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 05:39:09,088 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 05:39:09,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:39:13,818 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 05:39:13,818 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:39:13,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053269697] [2021-11-03 05:39:13,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053269697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:39:13,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:39:13,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:39:13,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019486280] [2021-11-03 05:39:13,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:39:13,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:39:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:39:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 05:39:13,821 INFO L87 Difference]: Start difference. First operand 2337 states and 3181 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 05:39:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:39:32,674 INFO L93 Difference]: Finished difference Result 3003 states and 3979 transitions. [2021-11-03 05:39:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:39:32,675 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 05:39:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:39:32,684 INFO L225 Difference]: With dead ends: 3003 [2021-11-03 05:39:32,685 INFO L226 Difference]: Without dead ends: 3003 [2021-11-03 05:39:32,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 05:39:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2021-11-03 05:39:32,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 2495. [2021-11-03 05:39:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 1832 states have (on average 1.892467248908297) internal successors, (3467), 2494 states have internal predecessors, (3467), 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 05:39:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 3467 transitions. [2021-11-03 05:39:32,759 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 3467 transitions. Word has length 53 [2021-11-03 05:39:32,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:39:32,759 INFO L470 AbstractCegarLoop]: Abstraction has 2495 states and 3467 transitions. [2021-11-03 05:39:32,760 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 05:39:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 3467 transitions. [2021-11-03 05:39:32,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:39:32,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:39:32,761 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 05:39:32,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:39:32,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:39:32,982 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:39:32,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:39:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 05:39:32,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:39:32,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970696676] [2021-11-03 05:39:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:39:32,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:39:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:39:32,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:39:32,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:39:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:39:33,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:39:33,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:39:33,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:39:33,525 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 05:39:33,556 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 05:39:33,582 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 05:39:33,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:39:33,722 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 05:39:33,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:39:33,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970696676] [2021-11-03 05:39:33,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970696676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:39:33,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:39:33,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:39:33,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810657552] [2021-11-03 05:39:33,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:39:33,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:39:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:39:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:39:33,725 INFO L87 Difference]: Start difference. First operand 2495 states and 3467 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 05:39:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:39:40,905 INFO L93 Difference]: Finished difference Result 3478 states and 4603 transitions. [2021-11-03 05:39:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:39:40,906 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 05:39:40,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:39:40,912 INFO L225 Difference]: With dead ends: 3478 [2021-11-03 05:39:40,912 INFO L226 Difference]: Without dead ends: 3478 [2021-11-03 05:39:40,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:39:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-11-03 05:39:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2494. [2021-11-03 05:39:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 1832 states have (on average 1.8913755458515285) internal successors, (3465), 2493 states have internal predecessors, (3465), 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 05:39:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3465 transitions. [2021-11-03 05:39:40,975 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3465 transitions. Word has length 59 [2021-11-03 05:39:40,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:39:40,976 INFO L470 AbstractCegarLoop]: Abstraction has 2494 states and 3465 transitions. [2021-11-03 05:39:40,976 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 05:39:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3465 transitions. [2021-11-03 05:39:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 05:39:40,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:39:40,977 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 05:39:40,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:39:41,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:39:41,185 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:39:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:39:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 05:39:41,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:39:41,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432803508] [2021-11-03 05:39:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:39:41,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:39:41,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:39:41,187 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:39:41,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:39:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:39:41,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:39:41,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:39:41,702 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 05:39:41,732 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 05:39:41,741 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 05:39:41,805 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 05:39:41,809 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 05:39:41,869 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 05:39:41,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:39:42,310 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 05:39:42,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:39:42,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432803508] [2021-11-03 05:39:42,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432803508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:39:42,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:39:42,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 05:39:42,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638378827] [2021-11-03 05:39:42,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:39:42,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:39:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:39:42,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:39:42,312 INFO L87 Difference]: Start difference. First operand 2494 states and 3465 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 05:40:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:07,688 INFO L93 Difference]: Finished difference Result 3248 states and 4271 transitions. [2021-11-03 05:40:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:40:07,689 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 05:40:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:07,694 INFO L225 Difference]: With dead ends: 3248 [2021-11-03 05:40:07,694 INFO L226 Difference]: Without dead ends: 3248 [2021-11-03 05:40:07,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:40:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-11-03 05:40:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2493. [2021-11-03 05:40:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 1832 states have (on average 1.89028384279476) internal successors, (3463), 2492 states have internal predecessors, (3463), 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 05:40:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3463 transitions. [2021-11-03 05:40:07,724 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3463 transitions. Word has length 60 [2021-11-03 05:40:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:07,725 INFO L470 AbstractCegarLoop]: Abstraction has 2493 states and 3463 transitions. [2021-11-03 05:40:07,725 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 05:40:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3463 transitions. [2021-11-03 05:40:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:40:07,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:07,726 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 05:40:07,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 05:40:07,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:40:07,940 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:40:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 05:40:07,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:40:07,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88258092] [2021-11-03 05:40:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:07,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:40:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:40:07,943 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:40:07,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:40:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:08,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:40:08,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:08,587 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 05:40:08,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:08,723 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 05:40:08,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:40:08,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88258092] [2021-11-03 05:40:08,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88258092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:40:08,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:40:08,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:40:08,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782567381] [2021-11-03 05:40:08,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:40:08,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:40:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:40:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:40:08,725 INFO L87 Difference]: Start difference. First operand 2493 states and 3463 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 05:40:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:09,013 INFO L93 Difference]: Finished difference Result 3502 states and 4621 transitions. [2021-11-03 05:40:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:40:09,014 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 05:40:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:09,021 INFO L225 Difference]: With dead ends: 3502 [2021-11-03 05:40:09,023 INFO L226 Difference]: Without dead ends: 3502 [2021-11-03 05:40:09,024 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 05:40:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2021-11-03 05:40:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 2511. [2021-11-03 05:40:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 1850 states have (on average 1.8816216216216217) internal successors, (3481), 2510 states have internal predecessors, (3481), 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 05:40:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3481 transitions. [2021-11-03 05:40:09,060 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3481 transitions. Word has length 64 [2021-11-03 05:40:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:09,061 INFO L470 AbstractCegarLoop]: Abstraction has 2511 states and 3481 transitions. [2021-11-03 05:40:09,061 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 05:40:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3481 transitions. [2021-11-03 05:40:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 05:40:09,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:09,062 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 05:40:09,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:40:09,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:40:09,282 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:40:09,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 05:40:09,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:40:09,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259246606] [2021-11-03 05:40:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:09,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:40:09,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:40:09,288 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:40:09,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:40:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:09,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:40:09,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:10,016 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 05:40:10,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:10,222 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 05:40:10,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:40:10,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259246606] [2021-11-03 05:40:10,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259246606] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:40:10,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1619305030] [2021-11-03 05:40:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:10,223 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:40:10,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:40:10,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:40:10,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:40:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:10,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:40:10,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:11,108 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 05:40:11,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:11,238 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 05:40:11,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1619305030] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:40:11,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599542927] [2021-11-03 05:40:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:11,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:40:11,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:40:11,246 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:40:11,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 05:40:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:11,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:40:11,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:11,977 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 05:40:11,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:12,103 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 05:40:12,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599542927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:40:12,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:40:12,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 05:40:12,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639237211] [2021-11-03 05:40:12,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:40:12,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:40:12,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:40:12,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:40:12,106 INFO L87 Difference]: Start difference. First operand 2511 states and 3481 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 05:40:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:12,680 INFO L93 Difference]: Finished difference Result 3538 states and 4657 transitions. [2021-11-03 05:40:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:40:12,680 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 05:40:12,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:12,690 INFO L225 Difference]: With dead ends: 3538 [2021-11-03 05:40:12,690 INFO L226 Difference]: Without dead ends: 3538 [2021-11-03 05:40:12,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:40:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-11-03 05:40:12,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2547. [2021-11-03 05:40:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 1886 states have (on average 1.8647932131495228) internal successors, (3517), 2546 states have internal predecessors, (3517), 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 05:40:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3517 transitions. [2021-11-03 05:40:12,730 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3517 transitions. Word has length 66 [2021-11-03 05:40:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:12,731 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 3517 transitions. [2021-11-03 05:40:12,731 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 05:40:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3517 transitions. [2021-11-03 05:40:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 05:40:12,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:12,732 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 05:40:12,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:40:12,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:40:13,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:40:13,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:40:13,339 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:40:13,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 05:40:13,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:40:13,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456299997] [2021-11-03 05:40:13,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:40:13,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:40:13,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:40:13,346 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:40:13,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 05:40:14,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:40:14,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:40:14,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:40:14,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:14,392 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 05:40:14,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:14,877 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 05:40:14,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:40:14,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456299997] [2021-11-03 05:40:14,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456299997] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:40:14,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1842765646] [2021-11-03 05:40:14,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:40:14,877 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:40:14,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:40:14,883 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:40:14,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 05:40:16,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:40:16,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:40:16,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:40:16,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:16,484 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 05:40:16,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:16,634 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 05:40:16,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1842765646] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:40:16,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156514547] [2021-11-03 05:40:16,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:40:16,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:40:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:40:16,636 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:40:16,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 05:40:29,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:40:29,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:40:30,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:40:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:30,194 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 05:40:30,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:30,328 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 05:40:30,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156514547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:40:30,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:40:30,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-03 05:40:30,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419228807] [2021-11-03 05:40:30,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:40:30,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:40:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:40:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:40:30,331 INFO L87 Difference]: Start difference. First operand 2547 states and 3517 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 05:40:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:40:33,473 INFO L93 Difference]: Finished difference Result 3610 states and 4729 transitions. [2021-11-03 05:40:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 05:40:33,474 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 05:40:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:40:33,480 INFO L225 Difference]: With dead ends: 3610 [2021-11-03 05:40:33,480 INFO L226 Difference]: Without dead ends: 3610 [2021-11-03 05:40:33,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=370, Invalid=622, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:40:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2021-11-03 05:40:33,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 2619. [2021-11-03 05:40:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1958 states have (on average 1.8329928498467825) internal successors, (3589), 2618 states have internal predecessors, (3589), 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 05:40:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3589 transitions. [2021-11-03 05:40:33,520 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3589 transitions. Word has length 70 [2021-11-03 05:40:33,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:40:33,520 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3589 transitions. [2021-11-03 05:40:33,520 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 05:40:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3589 transitions. [2021-11-03 05:40:33,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 05:40:33,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:40:33,522 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 05:40:33,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:40:33,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:40:33,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-03 05:40:34,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:40:34,147 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 856 more)] === [2021-11-03 05:40:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:40:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996130, now seen corresponding path program 3 times [2021-11-03 05:40:34,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:40:34,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276875062] [2021-11-03 05:40:34,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:40:34,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:40:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:40:34,158 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:40:34,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 05:40:35,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 05:40:35,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:40:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:40:35,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:35,826 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 05:40:35,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:37,050 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 05:40:37,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:40:37,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276875062] [2021-11-03 05:40:37,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276875062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:40:37,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1291165045] [2021-11-03 05:40:37,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:40:37,051 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:40:37,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:40:37,052 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:40:37,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 05:40:42,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 05:40:42,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:40:42,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:40:42,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:43,144 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 05:40:43,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:40:43,309 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 05:40:43,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1291165045] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:40:43,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417325023] [2021-11-03 05:40:43,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:40:43,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:40:43,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:40:43,310 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:40:43,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd408ce-aa67-4fc3-b22b-72e1b5d39101/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process