./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8 --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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:30,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:30,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:30,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:30,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:30,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:30,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:30,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:30,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:30,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:30,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:30,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:30,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:30,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:30,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:30,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:30,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:30,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:30,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:30,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:30,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:30,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:30,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:30,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:30,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:30,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:30,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:30,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:30,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:30,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:30,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:30,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:30,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:30,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:30,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:30,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:30,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:30,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:30,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:30,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:30,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:30,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:23:30,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:30,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:30,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:30,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:30,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:30,241 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:30,241 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:23:30,241 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:30,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:30,242 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:23:30,243 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:23:30,243 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:30,243 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:23:30,244 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:23:30,244 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:23:30,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:23:30,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:23:30,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:30,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:23:30,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:23:30,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:23:30,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:23:30,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:30,247 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:23:30,247 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:23:30,247 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:23:30,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:30,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:30,248 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:23:30,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:30,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:30,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:30,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:30,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:30,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:30,250 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:23:30,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:23:30,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:30,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:30,251 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_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2021-11-07 01:23:30,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:30,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:30,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:30,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:30,583 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:30,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-07 01:23:30,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data/ad2f457a4/ddaa0e1d91964c73890765c877dcc078/FLAGb7e3dca09 [2021-11-07 01:23:31,323 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:31,323 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-07 01:23:31,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data/ad2f457a4/ddaa0e1d91964c73890765c877dcc078/FLAGb7e3dca09 [2021-11-07 01:23:31,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data/ad2f457a4/ddaa0e1d91964c73890765c877dcc078 [2021-11-07 01:23:31,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:31,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:31,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:31,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:31,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:31,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:31" (1/1) ... [2021-11-07 01:23:31,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612d85bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:31, skipping insertion in model container [2021-11-07 01:23:31,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:31" (1/1) ... [2021-11-07 01:23:31,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:31,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:32,137 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-07 01:23:32,251 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-07 01:23:32,254 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-07 01:23:32,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:32,296 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) [2021-11-07 01:23:32,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19fbf312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:32, skipping insertion in model container [2021-11-07 01:23:32,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:32,300 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:23:32,303 INFO L168 Benchmark]: Toolchain (without parser) took 749.66 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 65.3 MB in the beginning and 100.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:32,304 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 102.8 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:23:32,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.07 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 65.3 MB in the beginning and 100.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:32,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 102.8 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 745.07 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 65.3 MB in the beginning and 100.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8 --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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:34,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:34,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:34,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:34,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:34,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:34,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:34,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:34,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:34,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:34,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:34,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:34,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:34,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:34,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:34,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:34,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:34,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:34,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:34,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:34,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:34,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:34,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:34,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:34,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:34,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:34,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:34,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:34,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:34,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:34,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:34,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:34,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:34,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:34,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:34,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:34,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:34,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:34,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:34,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:34,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:34,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:23:34,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:34,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:34,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:34,735 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:34,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:34,735 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:34,735 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:34,736 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:34,736 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:34,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:23:34,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:23:34,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:34,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:23:34,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:23:34,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:23:34,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:23:34,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:34,738 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:23:34,738 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:23:34,738 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:23:34,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:34,739 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:34,739 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:23:34,739 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:23:34,739 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:23:34,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:34,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:34,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:23:34,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:34,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:34,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:34,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:34,743 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:23:34,744 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:34,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:34,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:34,745 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_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2021-11-07 01:23:35,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:35,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:35,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:35,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:35,166 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:35,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-07 01:23:35,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data/6bdf4ebcb/f5127a3d32a34f958c7b24ba6f189c5b/FLAG49652e80b [2021-11-07 01:23:35,937 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:35,937 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-07 01:23:35,953 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data/6bdf4ebcb/f5127a3d32a34f958c7b24ba6f189c5b/FLAG49652e80b [2021-11-07 01:23:36,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/data/6bdf4ebcb/f5127a3d32a34f958c7b24ba6f189c5b [2021-11-07 01:23:36,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:36,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:36,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:36,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:36,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:36,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e00513f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36, skipping insertion in model container [2021-11-07 01:23:36,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:36,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:36,623 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-07 01:23:36,805 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-07 01:23:36,806 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-07 01:23:36,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:36,838 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:23:36,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:36,876 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-07 01:23:37,008 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-07 01:23:37,009 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-07 01:23:37,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:37,029 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:23:37,060 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-07 01:23:37,115 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-07 01:23:37,116 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_36d61865-dd8c-4218-98ae-f5ea23035069/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-07 01:23:37,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:37,185 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:23:37,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37 WrapperNode [2021-11-07 01:23:37,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:37,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:37,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:23:37,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:23:37,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:37,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:23:37,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:23:37,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:23:37,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:23:37,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:23:37,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:23:37,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:23:37,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (1/1) ... [2021-11-07 01:23:37,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:37,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:23:37,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:23:37,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:23:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:23:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:23:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:23:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:23:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:23:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:23:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:23:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:23:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:23:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:23:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:23:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:23:43,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:23:43,647 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-11-07 01:23:43,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:43 BoogieIcfgContainer [2021-11-07 01:23:43,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:23:43,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:23:43,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:23:43,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:23:43,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:23:36" (1/3) ... [2021-11-07 01:23:43,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f827389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:43, skipping insertion in model container [2021-11-07 01:23:43,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:37" (2/3) ... [2021-11-07 01:23:43,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f827389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:43, skipping insertion in model container [2021-11-07 01:23:43,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:43" (3/3) ... [2021-11-07 01:23:43,667 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-2.i [2021-11-07 01:23:43,674 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:23:43,675 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-11-07 01:23:43,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:23:43,740 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 [2021-11-07 01:23:43,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-11-07 01:23:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 1253 states, 617 states have (on average 2.2641815235008105) internal successors, (1397), 1252 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:23:43,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:43,794 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:23:43,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:23:43,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-07 01:23:43,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:43,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976394472] [2021-11-07 01:23:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:43,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:43,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:43,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:43,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:23:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:43,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:43,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:44,115 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 [2021-11-07 01:23:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:44,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:44,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:44,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976394472] [2021-11-07 01:23:44,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976394472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:44,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:44,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:23:44,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912540715] [2021-11-07 01:23:44,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:44,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:44,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:44,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:44,222 INFO L87 Difference]: Start difference. First operand has 1253 states, 617 states have (on average 2.2641815235008105) internal successors, (1397), 1252 states have internal predecessors, (1397), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:46,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:46,965 INFO L93 Difference]: Finished difference Result 1421 states and 1496 transitions. [2021-11-07 01:23:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 01:23:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:46,996 INFO L225 Difference]: With dead ends: 1421 [2021-11-07 01:23:46,996 INFO L226 Difference]: Without dead ends: 1419 [2021-11-07 01:23:46,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-07 01:23:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1234. [2021-11-07 01:23:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 615 states have (on average 2.1154471544715445) internal successors, (1301), 1233 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1301 transitions. [2021-11-07 01:23:47,115 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1301 transitions. Word has length 3 [2021-11-07 01:23:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:47,116 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1301 transitions. [2021-11-07 01:23:47,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1301 transitions. [2021-11-07 01:23:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:23:47,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:47,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:23:47,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:47,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:47,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:23:47,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-07 01:23:47,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:47,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732675988] [2021-11-07 01:23:47,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:47,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:47,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:47,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:47,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:23:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:47,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:47,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:47,526 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 [2021-11-07 01:23:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:47,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:47,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:47,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732675988] [2021-11-07 01:23:47,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732675988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:47,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:47,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:23:47,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390707971] [2021-11-07 01:23:47,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:47,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:47,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:47,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:47,615 INFO L87 Difference]: Start difference. First operand 1234 states and 1301 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:53,818 INFO L93 Difference]: Finished difference Result 1898 states and 2008 transitions. [2021-11-07 01:23:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:53,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 01:23:53,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:53,836 INFO L225 Difference]: With dead ends: 1898 [2021-11-07 01:23:53,836 INFO L226 Difference]: Without dead ends: 1898 [2021-11-07 01:23:53,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-11-07 01:23:53,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1269. [2021-11-07 01:23:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 659 states have (on average 2.094081942336874) internal successors, (1380), 1268 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1380 transitions. [2021-11-07 01:23:53,880 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1380 transitions. Word has length 3 [2021-11-07 01:23:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:53,880 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1380 transitions. [2021-11-07 01:23:53,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1380 transitions. [2021-11-07 01:23:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:23:53,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:53,882 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:53,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:54,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:54,095 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:23:54,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-07 01:23:54,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:54,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187459223] [2021-11-07 01:23:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:54,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:54,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:54,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:54,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:23:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:54,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:54,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:54,231 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 [2021-11-07 01:23:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:54,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:54,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:54,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187459223] [2021-11-07 01:23:54,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187459223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:54,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:54,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:23:54,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787732991] [2021-11-07 01:23:54,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:54,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:54,282 INFO L87 Difference]: Start difference. First operand 1269 states and 1380 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:56,681 INFO L93 Difference]: Finished difference Result 1599 states and 1735 transitions. [2021-11-07 01:23:56,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:56,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:23:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:56,691 INFO L225 Difference]: With dead ends: 1599 [2021-11-07 01:23:56,691 INFO L226 Difference]: Without dead ends: 1599 [2021-11-07 01:23:56,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-11-07 01:23:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1222. [2021-11-07 01:23:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 659 states have (on average 2.0182094081942337) internal successors, (1330), 1221 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1330 transitions. [2021-11-07 01:23:56,726 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1330 transitions. Word has length 8 [2021-11-07 01:23:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:56,727 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1330 transitions. [2021-11-07 01:23:56,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1330 transitions. [2021-11-07 01:23:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:23:56,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:56,729 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:56,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:56,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:56,941 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:23:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-07 01:23:56,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:56,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624224046] [2021-11-07 01:23:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:56,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:56,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:56,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:56,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:23:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:57,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:57,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:57,124 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 [2021-11-07 01:23:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:57,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:57,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:57,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624224046] [2021-11-07 01:23:57,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624224046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:57,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:57,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:23:57,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997881905] [2021-11-07 01:23:57,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:57,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:57,284 INFO L87 Difference]: Start difference. First operand 1222 states and 1330 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:02,539 INFO L93 Difference]: Finished difference Result 1643 states and 1743 transitions. [2021-11-07 01:24:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:24:02,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:24:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:02,550 INFO L225 Difference]: With dead ends: 1643 [2021-11-07 01:24:02,550 INFO L226 Difference]: Without dead ends: 1643 [2021-11-07 01:24:02,551 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-07 01:24:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1212. [2021-11-07 01:24:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 659 states have (on average 1.9984825493171472) internal successors, (1317), 1211 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1317 transitions. [2021-11-07 01:24:02,585 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1317 transitions. Word has length 8 [2021-11-07 01:24:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:02,586 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1317 transitions. [2021-11-07 01:24:02,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1317 transitions. [2021-11-07 01:24:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:24:02,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:02,587 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:02,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:02,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:02,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:02,802 INFO L85 PathProgramCache]: Analyzing trace with hash -945573268, now seen corresponding path program 1 times [2021-11-07 01:24:02,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:02,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489331532] [2021-11-07 01:24:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:02,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:02,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:02,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:02,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:24:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:02,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:02,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:03,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:03,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:03,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489331532] [2021-11-07 01:24:03,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489331532] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:03,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:03,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:24:03,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474585994] [2021-11-07 01:24:03,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:03,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:03,250 INFO L87 Difference]: Start difference. First operand 1212 states and 1317 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:04,323 INFO L93 Difference]: Finished difference Result 1855 states and 2002 transitions. [2021-11-07 01:24:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:24:04,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 [2021-11-07 01:24:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:04,338 INFO L225 Difference]: With dead ends: 1855 [2021-11-07 01:24:04,338 INFO L226 Difference]: Without dead ends: 1855 [2021-11-07 01:24:04,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:24:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-07 01:24:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1453. [2021-11-07 01:24:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 900 states have (on average 1.968888888888889) internal successors, (1772), 1452 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1772 transitions. [2021-11-07 01:24:04,382 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1772 transitions. Word has length 11 [2021-11-07 01:24:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:04,383 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1772 transitions. [2021-11-07 01:24:04,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1772 transitions. [2021-11-07 01:24:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:24:04,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:04,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:04,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:04,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:04,597 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1258779124, now seen corresponding path program 1 times [2021-11-07 01:24:04,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:04,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461997915] [2021-11-07 01:24:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:04,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:04,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:04,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:24:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:04,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:04,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:04,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:04,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:04,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461997915] [2021-11-07 01:24:04,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461997915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:04,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:04,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:24:04,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375318289] [2021-11-07 01:24:04,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:04,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:04,882 INFO L87 Difference]: Start difference. First operand 1453 states and 1772 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:04,922 INFO L93 Difference]: Finished difference Result 1615 states and 1920 transitions. [2021-11-07 01:24:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:04,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2021-11-07 01:24:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:04,931 INFO L225 Difference]: With dead ends: 1615 [2021-11-07 01:24:04,932 INFO L226 Difference]: Without dead ends: 1615 [2021-11-07 01:24:04,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-07 01:24:04,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1393. [2021-11-07 01:24:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 864 states have (on average 1.9513888888888888) internal successors, (1686), 1392 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1686 transitions. [2021-11-07 01:24:04,988 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1686 transitions. Word has length 13 [2021-11-07 01:24:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:04,988 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1686 transitions. [2021-11-07 01:24:04,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1686 transitions. [2021-11-07 01:24:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:24:04,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:04,990 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:05,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:05,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:05,202 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:05,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1494013586, now seen corresponding path program 1 times [2021-11-07 01:24:05,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:05,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697131710] [2021-11-07 01:24:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:05,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:05,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:05,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:05,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:24:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:05,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:24:05,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:05,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:05,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:05,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697131710] [2021-11-07 01:24:05,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697131710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:05,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:05,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:24:05,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964087443] [2021-11-07 01:24:05,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:24:05,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:24:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:24:05,509 INFO L87 Difference]: Start difference. First operand 1393 states and 1686 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:05,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:05,586 INFO L93 Difference]: Finished difference Result 1587 states and 1864 transitions. [2021-11-07 01:24:05,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:24:05,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 15 [2021-11-07 01:24:05,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:05,598 INFO L225 Difference]: With dead ends: 1587 [2021-11-07 01:24:05,598 INFO L226 Difference]: Without dead ends: 1587 [2021-11-07 01:24:05,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:24:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-07 01:24:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1363. [2021-11-07 01:24:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 848 states have (on average 1.919811320754717) internal successors, (1628), 1362 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:05,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1628 transitions. [2021-11-07 01:24:05,634 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1628 transitions. Word has length 15 [2021-11-07 01:24:05,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:05,637 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1628 transitions. [2021-11-07 01:24:05,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1628 transitions. [2021-11-07 01:24:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:24:05,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:05,639 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:05,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:05,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:05,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:05,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:05,853 INFO L85 PathProgramCache]: Analyzing trace with hash 50590223, now seen corresponding path program 1 times [2021-11-07 01:24:05,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:05,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773275701] [2021-11-07 01:24:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:05,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:05,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:05,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:05,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:24:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:06,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:24:06,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:06,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:06,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:06,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:06,203 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:24:06,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:24:06,274 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:24:06,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:24:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:06,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:06,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:06,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773275701] [2021-11-07 01:24:06,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773275701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:06,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:06,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:24:06,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532573922] [2021-11-07 01:24:06,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:24:06,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:06,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:24:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:24:06,415 INFO L87 Difference]: Start difference. First operand 1363 states and 1628 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:08,175 INFO L93 Difference]: Finished difference Result 1799 states and 2123 transitions. [2021-11-07 01:24:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:24:08,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 16 [2021-11-07 01:24:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:08,185 INFO L225 Difference]: With dead ends: 1799 [2021-11-07 01:24:08,185 INFO L226 Difference]: Without dead ends: 1799 [2021-11-07 01:24:08,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:24:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-11-07 01:24:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1362. [2021-11-07 01:24:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 847 states have (on average 1.9197166469893743) internal successors, (1626), 1361 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1626 transitions. [2021-11-07 01:24:08,230 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1626 transitions. Word has length 16 [2021-11-07 01:24:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:08,230 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1626 transitions. [2021-11-07 01:24:08,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1626 transitions. [2021-11-07 01:24:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:24:08,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:08,231 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:08,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:24:08,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:08,445 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-07 01:24:08,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:08,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001588302] [2021-11-07 01:24:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:08,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:08,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:08,448 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:08,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:24:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:08,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:08,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:08,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:08,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:08,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001588302] [2021-11-07 01:24:08,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001588302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:08,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:08,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:24:08,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17772985] [2021-11-07 01:24:08,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:08,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:08,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:08,770 INFO L87 Difference]: Start difference. First operand 1362 states and 1626 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:08,799 INFO L93 Difference]: Finished difference Result 1302 states and 1540 transitions. [2021-11-07 01:24:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 18 [2021-11-07 01:24:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:08,806 INFO L225 Difference]: With dead ends: 1302 [2021-11-07 01:24:08,806 INFO L226 Difference]: Without dead ends: 1302 [2021-11-07 01:24:08,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-11-07 01:24:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1302. [2021-11-07 01:24:08,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 811 states have (on average 1.8988902589395809) internal successors, (1540), 1301 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1540 transitions. [2021-11-07 01:24:08,834 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1540 transitions. Word has length 18 [2021-11-07 01:24:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:08,835 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 1540 transitions. [2021-11-07 01:24:08,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1540 transitions. [2021-11-07 01:24:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:24:08,836 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:08,836 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] [2021-11-07 01:24:08,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:09,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:09,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:09,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:09,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-07 01:24:09,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:09,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426198526] [2021-11-07 01:24:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:09,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:09,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:09,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:09,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:24:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:09,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:24:09,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:09,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:09,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:09,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426198526] [2021-11-07 01:24:09,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426198526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:09,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:09,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:24:09,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946661330] [2021-11-07 01:24:09,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:24:09,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:24:09,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:24:09,363 INFO L87 Difference]: Start difference. First operand 1302 states and 1540 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:09,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:09,454 INFO L93 Difference]: Finished difference Result 1274 states and 1484 transitions. [2021-11-07 01:24:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:24:09,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-07 01:24:09,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:09,463 INFO L225 Difference]: With dead ends: 1274 [2021-11-07 01:24:09,463 INFO L226 Difference]: Without dead ends: 1274 [2021-11-07 01:24:09,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:24:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-07 01:24:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1272. [2021-11-07 01:24:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 795 states have (on average 1.8641509433962264) internal successors, (1482), 1271 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:09,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1482 transitions. [2021-11-07 01:24:09,493 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1482 transitions. Word has length 20 [2021-11-07 01:24:09,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:09,494 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 1482 transitions. [2021-11-07 01:24:09,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:09,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1482 transitions. [2021-11-07 01:24:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:24:09,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:09,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:09,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:09,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:09,713 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:09,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-07 01:24:09,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:09,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267943107] [2021-11-07 01:24:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:09,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:09,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:09,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:09,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:24:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:09,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:24:09,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:09,968 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 [2021-11-07 01:24:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:10,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:10,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:10,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267943107] [2021-11-07 01:24:10,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267943107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:10,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:10,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:24:10,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638481650] [2021-11-07 01:24:10,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:10,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:10,310 INFO L87 Difference]: Start difference. First operand 1272 states and 1482 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:13,324 INFO L93 Difference]: Finished difference Result 1854 states and 2186 transitions. [2021-11-07 01:24:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:24:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-07 01:24:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:13,336 INFO L225 Difference]: With dead ends: 1854 [2021-11-07 01:24:13,336 INFO L226 Difference]: Without dead ends: 1854 [2021-11-07 01:24:13,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:24:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-11-07 01:24:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1268. [2021-11-07 01:24:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 795 states have (on average 1.8540880503144654) internal successors, (1474), 1267 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1474 transitions. [2021-11-07 01:24:13,366 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1474 transitions. Word has length 34 [2021-11-07 01:24:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:13,369 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1474 transitions. [2021-11-07 01:24:13,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1474 transitions. [2021-11-07 01:24:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:24:13,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:13,375 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] [2021-11-07 01:24:13,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:13,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:13,588 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:13,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-07 01:24:13,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:13,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249142427] [2021-11-07 01:24:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:13,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:13,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:13,590 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:13,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:24:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:13,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:13,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:13,877 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 [2021-11-07 01:24:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:14,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:14,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:14,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249142427] [2021-11-07 01:24:14,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249142427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:14,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:14,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:24:14,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545237779] [2021-11-07 01:24:14,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:24:14,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:14,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:24:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:24:14,857 INFO L87 Difference]: Start difference. First operand 1268 states and 1474 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:22,607 INFO L93 Difference]: Finished difference Result 1981 states and 2290 transitions. [2021-11-07 01:24:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:24:22,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-11-07 01:24:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:22,617 INFO L225 Difference]: With dead ends: 1981 [2021-11-07 01:24:22,617 INFO L226 Difference]: Without dead ends: 1981 [2021-11-07 01:24:22,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:24:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-11-07 01:24:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1264. [2021-11-07 01:24:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 795 states have (on average 1.8440251572327044) internal successors, (1466), 1263 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1466 transitions. [2021-11-07 01:24:22,647 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1466 transitions. Word has length 34 [2021-11-07 01:24:22,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:22,647 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1466 transitions. [2021-11-07 01:24:22,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1466 transitions. [2021-11-07 01:24:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:24:22,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:22,649 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] [2021-11-07 01:24:22,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:24:22,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:22,864 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:22,865 INFO L85 PathProgramCache]: Analyzing trace with hash -489765179, now seen corresponding path program 1 times [2021-11-07 01:24:22,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:22,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972536864] [2021-11-07 01:24:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:22,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:22,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:22,867 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:22,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:24:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:23,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:24:23,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:23,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:23,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:23,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972536864] [2021-11-07 01:24:23,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972536864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:23,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:23,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:24:23,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451126651] [2021-11-07 01:24:23,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:23,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:23,595 INFO L87 Difference]: Start difference. First operand 1264 states and 1466 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2021-11-07 01:24:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:23,673 INFO L93 Difference]: Finished difference Result 1252 states and 1446 transitions. [2021-11-07 01:24:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:24:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 52 [2021-11-07 01:24:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:23,682 INFO L225 Difference]: With dead ends: 1252 [2021-11-07 01:24:23,683 INFO L226 Difference]: Without dead ends: 1252 [2021-11-07 01:24:23,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:24:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-11-07 01:24:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2021-11-07 01:24:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 783 states have (on average 1.8467432950191571) internal successors, (1446), 1251 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1446 transitions. [2021-11-07 01:24:23,708 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1446 transitions. Word has length 52 [2021-11-07 01:24:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:23,709 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1446 transitions. [2021-11-07 01:24:23,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2021-11-07 01:24:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1446 transitions. [2021-11-07 01:24:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:24:23,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:23,711 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] [2021-11-07 01:24:23,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 01:24:23,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:23,927 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:23,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-07 01:24:23,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:23,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194402808] [2021-11-07 01:24:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:23,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:23,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:23,929 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:23,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:24:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:24,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:24:24,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:24,490 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 [2021-11-07 01:24:24,500 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 [2021-11-07 01:24:25,508 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:24:25,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-07 01:24:25,538 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:24:25,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:24:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:25,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:27,748 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc36.base_9| (_ BitVec 32))) (or (let ((.cse0 (bvadd c_ULTIMATE.start_main_~user~0.offset (_ bv12 32)))) (and (bvule (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset) .cse0) (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc36.base_9| (_ bv44 32)) c_ULTIMATE.start_main_~user~0.base)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc36.base_9|))))))) is different from false [2021-11-07 01:24:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:31,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:31,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194402808] [2021-11-07 01:24:31,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194402808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:31,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:31,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:24:31,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962083773] [2021-11-07 01:24:31,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:24:31,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:31,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:24:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2021-11-07 01:24:31,120 INFO L87 Difference]: Start difference. First operand 1252 states and 1446 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:37,927 INFO L93 Difference]: Finished difference Result 1601 states and 1911 transitions. [2021-11-07 01:24:37,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:24:37,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-11-07 01:24:37,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:37,936 INFO L225 Difference]: With dead ends: 1601 [2021-11-07 01:24:37,937 INFO L226 Difference]: Without dead ends: 1601 [2021-11-07 01:24:37,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=16, Invalid=17, Unknown=1, NotChecked=8, Total=42 [2021-11-07 01:24:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-11-07 01:24:37,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1214. [2021-11-07 01:24:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 783 states have (on average 1.7982120051085568) internal successors, (1408), 1213 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1408 transitions. [2021-11-07 01:24:37,959 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1408 transitions. Word has length 60 [2021-11-07 01:24:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:37,960 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1408 transitions. [2021-11-07 01:24:37,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:37,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1408 transitions. [2021-11-07 01:24:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:24:37,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:37,961 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, 1, 1] [2021-11-07 01:24:37,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:38,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:38,178 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:38,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-07 01:24:38,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:38,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224564028] [2021-11-07 01:24:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:38,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:38,180 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:38,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:24:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:38,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:38,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:38,774 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 [2021-11-07 01:24:38,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-07 01:24:38,853 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 [2021-11-07 01:24:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:38,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:39,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:39,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224564028] [2021-11-07 01:24:39,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224564028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:39,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:39,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:24:39,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131785938] [2021-11-07 01:24:39,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:24:39,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:24:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:24:39,061 INFO L87 Difference]: Start difference. First operand 1214 states and 1408 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:45,450 INFO L93 Difference]: Finished difference Result 1993 states and 2318 transitions. [2021-11-07 01:24:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:24:45,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2021-11-07 01:24:45,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:45,461 INFO L225 Difference]: With dead ends: 1993 [2021-11-07 01:24:45,461 INFO L226 Difference]: Without dead ends: 1993 [2021-11-07 01:24:45,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:24:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2021-11-07 01:24:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1213. [2021-11-07 01:24:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 783 states have (on average 1.7969348659003832) internal successors, (1407), 1212 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1407 transitions. [2021-11-07 01:24:45,482 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1407 transitions. Word has length 66 [2021-11-07 01:24:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:45,483 INFO L470 AbstractCegarLoop]: Abstraction has 1213 states and 1407 transitions. [2021-11-07 01:24:45,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1407 transitions. [2021-11-07 01:24:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:24:45,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:45,484 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, 1, 1, 1] [2021-11-07 01:24:45,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:45,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:45,700 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:24:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-07 01:24:45,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:45,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872891662] [2021-11-07 01:24:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:45,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:45,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:45,703 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:45,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:24:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:46,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:24:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:46,454 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 [2021-11-07 01:24:46,510 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 [2021-11-07 01:24:46,524 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 [2021-11-07 01:24:46,603 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 [2021-11-07 01:24:46,607 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 [2021-11-07 01:24:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:46,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:47,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:47,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872891662] [2021-11-07 01:24:47,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872891662] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:47,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:47,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:24:47,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955337372] [2021-11-07 01:24:47,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:24:47,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:24:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:24:47,304 INFO L87 Difference]: Start difference. First operand 1213 states and 1407 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:09,036 INFO L93 Difference]: Finished difference Result 1917 states and 2219 transitions. [2021-11-07 01:25:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:25:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:25:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:09,046 INFO L225 Difference]: With dead ends: 1917 [2021-11-07 01:25:09,046 INFO L226 Difference]: Without dead ends: 1917 [2021-11-07 01:25:09,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:25:09,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-11-07 01:25:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1212. [2021-11-07 01:25:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 783 states have (on average 1.7956577266922094) internal successors, (1406), 1211 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1406 transitions. [2021-11-07 01:25:09,064 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1406 transitions. Word has length 67 [2021-11-07 01:25:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:09,064 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1406 transitions. [2021-11-07 01:25:09,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1406 transitions. [2021-11-07 01:25:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:25:09,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:09,065 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:09,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:09,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:09,269 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:25:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-07 01:25:09,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:09,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787383979] [2021-11-07 01:25:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:09,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:09,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:09,271 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:09,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:25:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:09,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:09,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:10,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:10,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:10,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787383979] [2021-11-07 01:25:10,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787383979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:10,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:10,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:25:10,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991612355] [2021-11-07 01:25:10,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:25:10,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:10,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:25:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:25:10,228 INFO L87 Difference]: Start difference. First operand 1212 states and 1406 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:10,390 INFO L93 Difference]: Finished difference Result 2274 states and 2622 transitions. [2021-11-07 01:25:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:25:10,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 71 [2021-11-07 01:25:10,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:10,402 INFO L225 Difference]: With dead ends: 2274 [2021-11-07 01:25:10,402 INFO L226 Difference]: Without dead ends: 2274 [2021-11-07 01:25:10,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:25:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-11-07 01:25:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1215. [2021-11-07 01:25:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 786 states have (on average 1.7926208651399491) internal successors, (1409), 1214 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1409 transitions. [2021-11-07 01:25:10,424 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1409 transitions. Word has length 71 [2021-11-07 01:25:10,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:10,424 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1409 transitions. [2021-11-07 01:25:10,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1409 transitions. [2021-11-07 01:25:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:25:10,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:10,425 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:10,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:10,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:10,626 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:25:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-07 01:25:10,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:10,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865160486] [2021-11-07 01:25:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:10,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:10,628 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:10,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:25:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:11,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:11,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:11,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:11,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:11,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865160486] [2021-11-07 01:25:11,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865160486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:11,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061235195] [2021-11-07 01:25:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:11,825 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:25:11,827 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:25:11,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:25:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:12,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:12,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:12,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:12,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1061235195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:12,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009236246] [2021-11-07 01:25:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:12,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:25:12,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:12,992 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:25:12,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:25:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:13,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:25:13,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:14,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:14,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009236246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:14,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:25:14,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 01:25:14,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672720408] [2021-11-07 01:25:14,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:25:14,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:25:14,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:25:14,367 INFO L87 Difference]: Start difference. First operand 1215 states and 1409 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:15,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:15,484 INFO L93 Difference]: Finished difference Result 3349 states and 3851 transitions. [2021-11-07 01:25:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:25:15,485 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 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 73 [2021-11-07 01:25:15,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:15,493 INFO L225 Difference]: With dead ends: 3349 [2021-11-07 01:25:15,494 INFO L226 Difference]: Without dead ends: 3349 [2021-11-07 01:25:15,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=364, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:25:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2021-11-07 01:25:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 1224. [2021-11-07 01:25:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 795 states have (on average 1.7861635220125787) internal successors, (1420), 1223 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1420 transitions. [2021-11-07 01:25:15,532 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1420 transitions. Word has length 73 [2021-11-07 01:25:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:15,533 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 1420 transitions. [2021-11-07 01:25:15,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:15,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1420 transitions. [2021-11-07 01:25:15,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:25:15,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:15,534 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:15,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:15,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 01:25:15,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:16,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:16,155 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:25:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-07 01:25:16,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:16,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970679283] [2021-11-07 01:25:16,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:25:16,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:16,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:16,157 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:16,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:25:17,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:25:17,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:25:17,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:25:17,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:17,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:18,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:18,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970679283] [2021-11-07 01:25:18,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970679283] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:18,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1200216484] [2021-11-07 01:25:18,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:25:18,099 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:25:18,105 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:25:18,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:25:19,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:25:19,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:25:19,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:25:19,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:19,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:20,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1200216484] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:20,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342006522] [2021-11-07 01:25:20,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:25:20,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:25:20,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:20,069 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:25:20,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 01:25:54,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:25:54,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:25:54,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:25:54,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:54,888 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 [2021-11-07 01:25:54,909 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:25:54,910 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 19 treesize of output 19 [2021-11-07 01:25:54,993 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 [2021-11-07 01:25:55,002 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 23 treesize of output 19 [2021-11-07 01:25:55,436 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-07 01:25:55,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-07 01:25:55,465 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 01:25:55,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-07 01:25:55,726 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:25:55,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:25:55,785 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:25:55,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:25:56,039 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:25:56,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:25:56,106 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:25:56,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:25:56,385 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:25:56,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:25:56,442 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:25:56,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:25:57,275 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:25:57,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-07 01:25:57,338 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:25:57,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:25:58,178 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:25:58,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2021-11-07 01:25:58,246 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-07 01:25:58,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 101 [2021-11-07 01:25:58,791 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:25:58,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-07 01:25:58,808 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:25:58,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-07 01:25:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:25:58,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:41,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-07 01:27:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 5 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:27:41,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342006522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:41,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:27:41,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 9, 9] total 33 [2021-11-07 01:27:41,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108194138] [2021-11-07 01:27:41,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 01:27:41,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:41,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 01:27:41,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=888, Unknown=13, NotChecked=0, Total=1056 [2021-11-07 01:27:41,541 INFO L87 Difference]: Start difference. First operand 1224 states and 1420 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:32,846 WARN L207 SmtUtils]: Spent 20.51 s on a formula simplification that was a NOOP. DAG size: 62 [2021-11-07 01:29:03,270 WARN L207 SmtUtils]: Spent 9.78 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-07 01:31:08,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:08,434 INFO L93 Difference]: Finished difference Result 2861 states and 3434 transitions. [2021-11-07 01:31:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 01:31:08,435 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 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 77 [2021-11-07 01:31:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:08,439 INFO L225 Difference]: With dead ends: 2861 [2021-11-07 01:31:08,439 INFO L226 Difference]: Without dead ends: 2861 [2021-11-07 01:31:08,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 417 SyntacticMatches, 9 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 162.9s TimeCoverageRelationStatistics Valid=1001, Invalid=3804, Unknown=25, NotChecked=0, Total=4830 [2021-11-07 01:31:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-11-07 01:31:08,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1235. [2021-11-07 01:31:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 807 states have (on average 1.7732342007434945) internal successors, (1431), 1234 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1431 transitions. [2021-11-07 01:31:08,466 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1431 transitions. Word has length 77 [2021-11-07 01:31:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:08,467 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 1431 transitions. [2021-11-07 01:31:08,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1431 transitions. [2021-11-07 01:31:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:31:08,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:08,469 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:08,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:08,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-07 01:31:08,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-07 01:31:09,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:09,070 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:31:09,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 688279333, now seen corresponding path program 1 times [2021-11-07 01:31:09,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:09,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315533784] [2021-11-07 01:31:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:09,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:09,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:09,094 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:09,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:31:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:09,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:31:09,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:10,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:11,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:11,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315533784] [2021-11-07 01:31:11,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315533784] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:11,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1218932964] [2021-11-07 01:31:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:11,872 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:31:11,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:31:11,872 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:31:11,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 01:31:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:12,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:31:12,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:13,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:13,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1218932964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:13,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653108022] [2021-11-07 01:31:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:13,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:13,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:13,527 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:31:13,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 01:31:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:14,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:31:14,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:14,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:18,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653108022] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:18,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:31:18,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 49 [2021-11-07 01:31:18,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369654404] [2021-11-07 01:31:18,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 01:31:18,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 01:31:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=1760, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:31:18,583 INFO L87 Difference]: Start difference. First operand 1235 states and 1431 transitions. Second operand has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:54,227 INFO L93 Difference]: Finished difference Result 14836 states and 17023 transitions. [2021-11-07 01:31:54,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-07 01:31:54,228 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 01:31:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:54,264 INFO L225 Difference]: With dead ends: 14836 [2021-11-07 01:31:54,264 INFO L226 Difference]: Without dead ends: 14836 [2021-11-07 01:31:54,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2957 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=3045, Invalid=8511, Unknown=0, NotChecked=0, Total=11556 [2021-11-07 01:31:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2021-11-07 01:31:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 1271. [2021-11-07 01:31:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 843 states have (on average 1.753262158956109) internal successors, (1478), 1270 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1478 transitions. [2021-11-07 01:31:54,396 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1478 transitions. Word has length 85 [2021-11-07 01:31:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:54,396 INFO L470 AbstractCegarLoop]: Abstraction has 1271 states and 1478 transitions. [2021-11-07 01:31:54,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1478 transitions. [2021-11-07 01:31:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:31:54,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:54,405 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:54,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:54,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-07 01:31:54,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:55,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:55,017 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:31:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2300123, now seen corresponding path program 2 times [2021-11-07 01:31:55,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:55,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508518352] [2021-11-07 01:31:55,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:31:55,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:55,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:55,020 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:55,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-07 01:31:56,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:31:56,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:56,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:31:56,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:58,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:02,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:32:02,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508518352] [2021-11-07 01:32:02,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508518352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:02,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1317205045] [2021-11-07 01:32:02,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:32:02,003 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:32:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:32:02,004 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:32:02,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-07 01:32:04,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:32:04,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:32:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:32:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:04,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:04,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1317205045] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:04,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554373197] [2021-11-07 01:32:04,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:32:04,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:04,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:05,001 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:32:05,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d61865-dd8c-4218-98ae-f5ea23035069/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 01:32:47,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:32:47,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:32:47,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-07 01:32:47,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:47,805 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:32:47,805 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 15 treesize of output 15 [2021-11-07 01:32:47,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 01:32:48,765 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 01:32:48,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 26 [2021-11-07 01:32:49,097 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:49,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:49,463 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:49,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:49,814 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:49,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:50,163 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:50,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:50,519 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:50,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:50,871 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:50,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:51,211 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:51,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:51,546 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:51,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:51,896 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:51,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:52,264 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:52,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:54,193 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:54,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:54,554 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:54,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:55,042 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:55,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:55,434 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:55,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:57,624 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:57,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:57,980 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:57,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:58,335 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:58,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:32:59,782 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:32:59,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:02,285 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:02,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:02,637 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:02,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:04,840 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:04,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:05,181 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:05,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:07,127 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:07,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:07,470 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:07,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:09,936 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:09,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:10,305 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:10,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:12,250 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:12,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:12,620 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:33:12,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:33:15,903 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:33:15,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 48 [2021-11-07 01:33:16,375 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:33:16,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 27 [2021-11-07 01:33:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-07 01:33:16,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:35,646 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_316| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_316| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))))))) (_ bv1 1)))) is different from false