./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/s3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:19:02,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:19:02,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:19:02,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:19:02,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:19:02,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:19:02,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:19:02,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:19:02,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:19:02,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:19:02,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:19:02,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:19:02,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:19:02,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:19:02,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:19:02,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:19:02,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:19:02,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:19:02,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:19:02,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:19:02,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:19:02,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:19:02,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:19:02,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:19:02,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:19:02,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:19:02,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:19:02,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:19:02,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:19:02,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:19:02,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:19:02,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:19:02,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:19:02,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:19:02,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:19:02,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:19:02,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:19:02,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:19:02,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:19:02,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:19:02,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:19:02,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:19:02,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:19:02,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:19:02,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:19:02,231 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:19:02,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:19:02,231 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:19:02,232 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:19:02,232 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:19:02,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:19:02,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:19:02,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:19:02,233 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:19:02,234 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:19:02,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:19:02,234 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:19:02,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:19:02,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:19:02,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:19:02,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:19:02,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:19:02,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:19:02,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:19:02,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:19:02,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:19:02,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:19:02,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:19:02,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:19:02,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:19:02,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:19:02,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:19:02,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:19:02,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:19:02,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:19:02,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:19:02,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:19:02,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:19:02,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:19:02,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:19:02,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:19:02,242 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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 [2021-11-07 02:19:02,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:19:02,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:19:02,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:19:02,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:19:02,549 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:19:02,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/loops/s3.i [2021-11-07 02:19:02,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data/476637ad0/638c309d44c448eeb8924ce13179d3f4/FLAG0167402bd [2021-11-07 02:19:03,371 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:19:03,372 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/sv-benchmarks/c/loops/s3.i [2021-11-07 02:19:03,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data/476637ad0/638c309d44c448eeb8924ce13179d3f4/FLAG0167402bd [2021-11-07 02:19:03,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data/476637ad0/638c309d44c448eeb8924ce13179d3f4 [2021-11-07 02:19:03,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:19:03,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:19:03,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:19:03,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:19:03,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:19:03,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:03" (1/1) ... [2021-11-07 02:19:03,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2b236a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:03, skipping insertion in model container [2021-11-07 02:19:03,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:03" (1/1) ... [2021-11-07 02:19:03,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:19:03,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:19:04,205 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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-11-07 02:19:04,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:19:04,235 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 02:19:04,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@828f24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:04, skipping insertion in model container [2021-11-07 02:19:04,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:19:04,237 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:19:04,241 INFO L168 Benchmark]: Toolchain (without parser) took 657.76 ms. Allocated memory is still 92.3 MB. Free memory was 56.3 MB in the beginning and 59.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:19:04,244 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:19:04,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.46 ms. Allocated memory is still 92.3 MB. Free memory was 56.2 MB in the beginning and 60.2 MB in the end (delta: -4.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:19:04,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 652.46 ms. Allocated memory is still 92.3 MB. Free memory was 56.2 MB in the beginning and 60.2 MB in the end (delta: -4.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:19:06,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:19:06,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:19:06,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:19:06,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:19:06,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:19:06,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:19:06,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:19:06,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:19:06,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:19:06,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:19:06,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:19:06,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:19:06,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:19:06,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:19:06,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:19:06,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:19:06,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:19:06,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:19:06,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:19:06,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:19:06,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:19:06,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:19:06,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:19:06,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:19:06,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:19:06,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:19:06,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:19:06,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:19:06,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:19:06,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:19:06,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:19:06,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:19:06,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:19:06,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:19:06,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:19:06,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:19:06,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:19:06,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:19:06,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:19:06,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:19:06,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:19:06,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:19:06,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:19:06,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:19:06,823 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:19:06,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:19:06,824 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:19:06,824 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:19:06,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:19:06,824 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:19:06,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:19:06,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:19:06,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:19:06,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:19:06,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:19:06,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:19:06,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:19:06,829 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:19:06,829 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:19:06,829 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:19:06,830 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:19:06,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:19:06,830 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:19:06,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:19:06,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:19:06,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:19:06,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:19:06,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:19:06,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:19:06,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:19:06,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:19:06,832 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:19:06,833 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:06,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:19:06,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:19:06,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:19:06,834 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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 [2021-11-07 02:19:07,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:19:07,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:19:07,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:19:07,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:19:07,328 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:19:07,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/loops/s3.i [2021-11-07 02:19:07,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data/48c179518/6e061fd49a734161830b189fdabe9842/FLAG13c3f459e [2021-11-07 02:19:08,087 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:19:08,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/sv-benchmarks/c/loops/s3.i [2021-11-07 02:19:08,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data/48c179518/6e061fd49a734161830b189fdabe9842/FLAG13c3f459e [2021-11-07 02:19:08,286 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/data/48c179518/6e061fd49a734161830b189fdabe9842 [2021-11-07 02:19:08,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:19:08,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:19:08,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:19:08,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:19:08,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:19:08,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:08" (1/1) ... [2021-11-07 02:19:08,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b57ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:08, skipping insertion in model container [2021-11-07 02:19:08,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:08" (1/1) ... [2021-11-07 02:19:08,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:19:08,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:19:08,940 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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-11-07 02:19:08,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:19:08,975 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:19:08,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:19:09,098 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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-11-07 02:19:09,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:19:09,109 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:19:09,205 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_0adc1125-5c3e-4831-a30b-7d03c9329c2f/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-11-07 02:19:09,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:19:09,230 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:19:09,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09 WrapperNode [2021-11-07 02:19:09,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:19:09,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:19:09,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:19:09,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:19:09,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:19:09,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:19:09,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:19:09,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:19:09,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:19:09,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:19:09,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:19:09,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:19:09,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (1/1) ... [2021-11-07 02:19:09,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:19:09,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:19:09,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:19:09,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:19:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:19:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:19:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:19:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:19:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:19:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:19:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:19:09,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:19:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:19:09,806 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:19:19,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-07 02:19:19,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-07 02:19:19,419 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:19:19,420 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 02:19:19,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:19 BoogieIcfgContainer [2021-11-07 02:19:19,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:19:19,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:19:19,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:19:19,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:19:19,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:19:08" (1/3) ... [2021-11-07 02:19:19,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30033b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:19, skipping insertion in model container [2021-11-07 02:19:19,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:09" (2/3) ... [2021-11-07 02:19:19,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30033b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:19, skipping insertion in model container [2021-11-07 02:19:19,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:19" (3/3) ... [2021-11-07 02:19:19,434 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2021-11-07 02:19:19,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:19:19,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:19:19,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:19:19,502 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 02:19:19,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:19:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 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 02:19:19,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 02:19:19,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:19,533 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] [2021-11-07 02:19:19,534 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:19:19,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2021-11-07 02:19:19,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:19,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638501724] [2021-11-07 02:19:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:19,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:19,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:19,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:19,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:19:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:19,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:19,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:20,223 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 02:19:20,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:20,487 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 02:19:20,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:20,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638501724] [2021-11-07 02:19:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638501724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:20,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:20,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:19:20,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543540884] [2021-11-07 02:19:20,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:19:20,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:20,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:19:20,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:19:20,532 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:19:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:20,729 INFO L93 Difference]: Finished difference Result 375 states and 626 transitions. [2021-11-07 02:19:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:19:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2021-11-07 02:19:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:20,761 INFO L225 Difference]: With dead ends: 375 [2021-11-07 02:19:20,761 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 02:19:20,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 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 02:19:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 02:19:20,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 02:19:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4814814814814814) internal successors, (320), 216 states have internal predecessors, (320), 0 states have call successors, (0), 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 02:19:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2021-11-07 02:19:20,833 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 24 [2021-11-07 02:19:20,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:20,834 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2021-11-07 02:19:20,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:19:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2021-11-07 02:19:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 02:19:20,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:20,839 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-11-07 02:19:20,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:21,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:21,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:19:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1495258694, now seen corresponding path program 1 times [2021-11-07 02:19:21,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:21,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081076738] [2021-11-07 02:19:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:21,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:21,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:21,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:21,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:19:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:21,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:21,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:19:21,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:19:21,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:21,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081076738] [2021-11-07 02:19:21,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081076738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:21,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:21,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:19:21,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647988959] [2021-11-07 02:19:21,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:19:21,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:19:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:19:21,976 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:24,275 INFO L93 Difference]: Finished difference Result 628 states and 933 transitions. [2021-11-07 02:19:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:19:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 02:19:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:24,282 INFO L225 Difference]: With dead ends: 628 [2021-11-07 02:19:24,282 INFO L226 Difference]: Without dead ends: 521 [2021-11-07 02:19:24,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 02:19:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-07 02:19:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 421. [2021-11-07 02:19:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.480952380952381) internal successors, (622), 420 states have internal predecessors, (622), 0 states have call successors, (0), 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 02:19:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 622 transitions. [2021-11-07 02:19:24,386 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 622 transitions. Word has length 41 [2021-11-07 02:19:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:24,387 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 622 transitions. [2021-11-07 02:19:24,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 622 transitions. [2021-11-07 02:19:24,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 02:19:24,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:24,395 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-11-07 02:19:24,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:24,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:24,611 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:19:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 924360661, now seen corresponding path program 1 times [2021-11-07 02:19:24,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:24,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437944752] [2021-11-07 02:19:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:24,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:24,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:24,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:24,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:19:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:25,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:25,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:19:25,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:19:25,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:25,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437944752] [2021-11-07 02:19:25,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437944752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:25,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:25,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:19:25,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296635835] [2021-11-07 02:19:25,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:19:25,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:25,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:19:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:19:25,908 INFO L87 Difference]: Start difference. First operand 421 states and 622 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 02:19:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:28,108 INFO L93 Difference]: Finished difference Result 939 states and 1394 transitions. [2021-11-07 02:19:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:19:28,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 80 [2021-11-07 02:19:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:28,115 INFO L225 Difference]: With dead ends: 939 [2021-11-07 02:19:28,116 INFO L226 Difference]: Without dead ends: 628 [2021-11-07 02:19:28,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 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 02:19:28,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-07 02:19:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-11-07 02:19:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.4784688995215312) internal successors, (927), 627 states have internal predecessors, (927), 0 states have call successors, (0), 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 02:19:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 927 transitions. [2021-11-07 02:19:28,188 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 927 transitions. Word has length 80 [2021-11-07 02:19:28,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:28,190 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 927 transitions. [2021-11-07 02:19:28,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 02:19:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 927 transitions. [2021-11-07 02:19:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 02:19:28,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:28,203 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 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] [2021-11-07 02:19:28,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:28,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:28,417 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:19:28,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2021-11-07 02:19:28,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:28,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744004066] [2021-11-07 02:19:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:28,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:28,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:28,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:28,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:19:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:29,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:19:29,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:29,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:19:29,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:19:29,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:19:29,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:19:29,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:19:29,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:19:29,410 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 02:19:29,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-07 02:19:29,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:19:29,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:19:29,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:19:30,143 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:19:30,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-11-07 02:19:31,833 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:19:31,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-07 02:19:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 02:19:32,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 02:19:32,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:32,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744004066] [2021-11-07 02:19:32,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744004066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:32,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:32,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:19:32,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74137407] [2021-11-07 02:19:32,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:19:32,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:32,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:19:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:19:32,809 INFO L87 Difference]: Start difference. First operand 628 states and 927 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 02:20:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:35,048 INFO L93 Difference]: Finished difference Result 2264 states and 3359 transitions. [2021-11-07 02:20:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:20:35,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 100 [2021-11-07 02:20:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:35,063 INFO L225 Difference]: With dead ends: 2264 [2021-11-07 02:20:35,063 INFO L226 Difference]: Without dead ends: 1643 [2021-11-07 02:20:35,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:20:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-07 02:20:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 753. [2021-11-07 02:20:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.5106382978723405) internal successors, (1136), 752 states have internal predecessors, (1136), 0 states have call successors, (0), 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 02:20:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1136 transitions. [2021-11-07 02:20:35,134 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1136 transitions. Word has length 100 [2021-11-07 02:20:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:35,135 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1136 transitions. [2021-11-07 02:20:35,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 02:20:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1136 transitions. [2021-11-07 02:20:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 02:20:35,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:35,138 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 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] [2021-11-07 02:20:35,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:35,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:35,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:20:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1223162519, now seen corresponding path program 1 times [2021-11-07 02:20:35,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:35,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292227163] [2021-11-07 02:20:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:35,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:35,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:35,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:35,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:20:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:36,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:20:36,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:36,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:20:36,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:20:36,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:20:36,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:20:36,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:20:36,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:20:36,976 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:20:36,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:20:39,179 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:20:39,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:20:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 02:20:39,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 02:20:39,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:39,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292227163] [2021-11-07 02:20:39,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292227163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:39,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:39,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:20:39,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634434343] [2021-11-07 02:20:39,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:20:39,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:20:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:20:39,776 INFO L87 Difference]: Start difference. First operand 753 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 02:21:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:08,352 INFO L93 Difference]: Finished difference Result 1757 states and 2634 transitions. [2021-11-07 02:21:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:08,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 100 [2021-11-07 02:21:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:08,368 INFO L225 Difference]: With dead ends: 1757 [2021-11-07 02:21:08,368 INFO L226 Difference]: Without dead ends: 1011 [2021-11-07 02:21:08,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:21:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-07 02:21:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 873. [2021-11-07 02:21:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5378440366972477) internal successors, (1341), 872 states have internal predecessors, (1341), 0 states have call successors, (0), 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 02:21:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1341 transitions. [2021-11-07 02:21:08,423 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1341 transitions. Word has length 100 [2021-11-07 02:21:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:08,424 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1341 transitions. [2021-11-07 02:21:08,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 02:21:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1341 transitions. [2021-11-07 02:21:08,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 02:21:08,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:08,427 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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] [2021-11-07 02:21:08,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 02:21:08,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:08,644 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash -517718612, now seen corresponding path program 1 times [2021-11-07 02:21:08,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:08,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577784278] [2021-11-07 02:21:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:08,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:08,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:08,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:08,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:21:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:09,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:09,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:09,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:09,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:09,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:09,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:09,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:09,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:10,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:10,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:10,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:10,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:10,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:10,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:10,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:10,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:10,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:10,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:10,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:10,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:10,567 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:21:10,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:21:11,219 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:21:11,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:21:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 02:21:11,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 02:21:11,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:11,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577784278] [2021-11-07 02:21:11,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577784278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:11,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:11,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:21:11,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461344772] [2021-11-07 02:21:11,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:21:11,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:21:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:21:11,853 INFO L87 Difference]: Start difference. First operand 873 states and 1341 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 02:21:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:51,793 INFO L93 Difference]: Finished difference Result 2519 states and 3817 transitions. [2021-11-07 02:21:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:21:51,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 115 [2021-11-07 02:21:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:51,808 INFO L225 Difference]: With dead ends: 2519 [2021-11-07 02:21:51,808 INFO L226 Difference]: Without dead ends: 1653 [2021-11-07 02:21:51,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:21:51,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-07 02:21:51,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1000. [2021-11-07 02:21:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.5195195195195195) internal successors, (1518), 999 states have internal predecessors, (1518), 0 states have call successors, (0), 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 02:21:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1518 transitions. [2021-11-07 02:21:51,885 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1518 transitions. Word has length 115 [2021-11-07 02:21:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:51,886 INFO L470 AbstractCegarLoop]: Abstraction has 1000 states and 1518 transitions. [2021-11-07 02:21:51,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 02:21:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1518 transitions. [2021-11-07 02:21:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 02:21:51,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:51,891 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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] [2021-11-07 02:21:51,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:52,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:52,104 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:52,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:52,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1265744566, now seen corresponding path program 1 times [2021-11-07 02:21:52,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:52,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283430307] [2021-11-07 02:21:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:52,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:52,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:52,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:52,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:21:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:53,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:53,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:53,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:53,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:53,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:53,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:53,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:53,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:53,871 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:21:53,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:21:54,640 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:21:54,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:21:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 02:21:54,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 02:21:55,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:55,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283430307] [2021-11-07 02:21:55,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283430307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:55,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:55,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:21:55,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509149151] [2021-11-07 02:21:55,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:21:55,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:21:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:21:55,236 INFO L87 Difference]: Start difference. First operand 1000 states and 1518 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 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 02:22:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:32,502 INFO L93 Difference]: Finished difference Result 2718 states and 4080 transitions. [2021-11-07 02:22:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:22:32,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 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 115 [2021-11-07 02:22:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:32,517 INFO L225 Difference]: With dead ends: 2718 [2021-11-07 02:22:32,517 INFO L226 Difference]: Without dead ends: 1725 [2021-11-07 02:22:32,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:22:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2021-11-07 02:22:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1164. [2021-11-07 02:22:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1163 states have (on average 1.5064488392089423) internal successors, (1752), 1163 states have internal predecessors, (1752), 0 states have call successors, (0), 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 02:22:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1752 transitions. [2021-11-07 02:22:32,594 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1752 transitions. Word has length 115 [2021-11-07 02:22:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:32,594 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 1752 transitions. [2021-11-07 02:22:32,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 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 02:22:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1752 transitions. [2021-11-07 02:22:32,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 02:22:32,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:32,598 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 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] [2021-11-07 02:22:32,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 02:22:32,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:32,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:22:32,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -647023955, now seen corresponding path program 1 times [2021-11-07 02:22:32,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:32,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050928996] [2021-11-07 02:22:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:32,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:32,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:32,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:32,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:22:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:33,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:22:33,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:33,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:33,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:34,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:34,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:34,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:34,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:34,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:34,555 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:22:34,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:22:35,692 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:22:35,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:22:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 02:22:35,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 02:22:36,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:36,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050928996] [2021-11-07 02:22:36,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050928996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:36,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:36,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:22:36,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233031998] [2021-11-07 02:22:36,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:22:36,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:22:36,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:22:36,321 INFO L87 Difference]: Start difference. First operand 1164 states and 1752 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 02:23:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:02,660 INFO L93 Difference]: Finished difference Result 2971 states and 4415 transitions. [2021-11-07 02:23:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:23:02,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 115 [2021-11-07 02:23:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:02,675 INFO L225 Difference]: With dead ends: 2971 [2021-11-07 02:23:02,675 INFO L226 Difference]: Without dead ends: 2011 [2021-11-07 02:23:02,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:23:02,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2021-11-07 02:23:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1358. [2021-11-07 02:23:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 1.5062638172439204) internal successors, (2044), 1357 states have internal predecessors, (2044), 0 states have call successors, (0), 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 02:23:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2044 transitions. [2021-11-07 02:23:02,761 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2044 transitions. Word has length 115 [2021-11-07 02:23:02,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:02,761 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 2044 transitions. [2021-11-07 02:23:02,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 02:23:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2044 transitions. [2021-11-07 02:23:02,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 02:23:02,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:02,766 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 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] [2021-11-07 02:23:02,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 02:23:02,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:02,984 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:23:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash 336272896, now seen corresponding path program 1 times [2021-11-07 02:23:02,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:02,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538133986] [2021-11-07 02:23:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:02,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:02,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:02,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:02,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:23:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:04,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:23:04,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:04,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:04,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:04,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:04,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:04,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:04,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:05,008 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:23:05,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:23:05,885 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:23:05,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:23:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 02:23:06,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 02:23:06,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:06,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538133986] [2021-11-07 02:23:06,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538133986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:06,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:06,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:23:06,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245076877] [2021-11-07 02:23:06,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:23:06,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:23:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:23:06,536 INFO L87 Difference]: Start difference. First operand 1358 states and 2044 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 02:23:44,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:44,259 INFO L93 Difference]: Finished difference Result 3374 states and 5001 transitions. [2021-11-07 02:23:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:23:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 117 [2021-11-07 02:23:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:44,273 INFO L225 Difference]: With dead ends: 3374 [2021-11-07 02:23:44,273 INFO L226 Difference]: Without dead ends: 2026 [2021-11-07 02:23:44,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:23:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-11-07 02:23:44,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1360. [2021-11-07 02:23:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 1.4856512141280354) internal successors, (2019), 1359 states have internal predecessors, (2019), 0 states have call successors, (0), 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 02:23:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2019 transitions. [2021-11-07 02:23:44,371 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2019 transitions. Word has length 117 [2021-11-07 02:23:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:44,371 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 2019 transitions. [2021-11-07 02:23:44,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 02:23:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2019 transitions. [2021-11-07 02:23:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 02:23:44,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:44,376 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 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] [2021-11-07 02:23:44,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:44,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:44,599 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:23:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash 475530403, now seen corresponding path program 1 times [2021-11-07 02:23:44,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:44,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805364551] [2021-11-07 02:23:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:44,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:44,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:44,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:44,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:23:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:45,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:23:45,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:46,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:46,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:46,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:46,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:46,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:46,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:46,581 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:23:46,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:23:47,852 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:23:47,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:23:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 02:23:48,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 02:23:48,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:48,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805364551] [2021-11-07 02:23:48,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805364551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:48,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:48,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:23:48,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288064177] [2021-11-07 02:23:48,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:23:48,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:23:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:23:48,543 INFO L87 Difference]: Start difference. First operand 1360 states and 2019 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 02:24:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:21,096 INFO L93 Difference]: Finished difference Result 3153 states and 4628 transitions. [2021-11-07 02:24:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:24:21,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 117 [2021-11-07 02:24:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:21,107 INFO L225 Difference]: With dead ends: 3153 [2021-11-07 02:24:21,107 INFO L226 Difference]: Without dead ends: 2034 [2021-11-07 02:24:21,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:24:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-11-07 02:24:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1401. [2021-11-07 02:24:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 1.4807142857142856) internal successors, (2073), 1400 states have internal predecessors, (2073), 0 states have call successors, (0), 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 02:24:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2073 transitions. [2021-11-07 02:24:21,205 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2073 transitions. Word has length 117 [2021-11-07 02:24:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:21,205 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 2073 transitions. [2021-11-07 02:24:21,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 02:24:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2073 transitions. [2021-11-07 02:24:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 02:24:21,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:21,210 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-07 02:24:21,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:21,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:21,446 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:24:21,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:21,446 INFO L85 PathProgramCache]: Analyzing trace with hash 653511332, now seen corresponding path program 1 times [2021-11-07 02:24:21,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:21,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892325830] [2021-11-07 02:24:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:21,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:21,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:21,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:21,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:24:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:23,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:23,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:23,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:23,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:23,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:23,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:23,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:23,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:23,902 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:24:23,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:24:24,903 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:24:24,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:24:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:24:25,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:24:25,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:25,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892325830] [2021-11-07 02:24:25,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892325830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:25,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:25,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:24:25,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304359137] [2021-11-07 02:24:25,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:24:25,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:24:25,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:24:25,692 INFO L87 Difference]: Start difference. First operand 1401 states and 2073 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 02:24:54,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:54,436 INFO L93 Difference]: Finished difference Result 3381 states and 4951 transitions. [2021-11-07 02:24:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:24:54,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 132 [2021-11-07 02:24:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:54,447 INFO L225 Difference]: With dead ends: 3381 [2021-11-07 02:24:54,447 INFO L226 Difference]: Without dead ends: 1992 [2021-11-07 02:24:54,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:24:54,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-11-07 02:24:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1401. [2021-11-07 02:24:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 1.4564285714285714) internal successors, (2039), 1400 states have internal predecessors, (2039), 0 states have call successors, (0), 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 02:24:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2039 transitions. [2021-11-07 02:24:54,541 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2039 transitions. Word has length 132 [2021-11-07 02:24:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:54,542 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 2039 transitions. [2021-11-07 02:24:54,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 02:24:54,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2039 transitions. [2021-11-07 02:24:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 02:24:54,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:54,547 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-07 02:24:54,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:54,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:54,773 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:24:54,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:54,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1844078565, now seen corresponding path program 1 times [2021-11-07 02:24:54,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:54,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883024232] [2021-11-07 02:24:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:54,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:54,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:54,776 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:54,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:24:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:56,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:56,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:56,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:24:56,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:56,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:56,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:56,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:56,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:57,343 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:24:57,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:24:58,363 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:24:58,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:24:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:24:58,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:24:59,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:59,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883024232] [2021-11-07 02:24:59,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883024232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:59,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:59,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:24:59,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742604720] [2021-11-07 02:24:59,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:24:59,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:59,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:24:59,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:24:59,057 INFO L87 Difference]: Start difference. First operand 1401 states and 2039 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 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 02:25:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:22,850 INFO L93 Difference]: Finished difference Result 3306 states and 4786 transitions. [2021-11-07 02:25:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:25:22,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 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 133 [2021-11-07 02:25:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:22,860 INFO L225 Difference]: With dead ends: 3306 [2021-11-07 02:25:22,860 INFO L226 Difference]: Without dead ends: 1917 [2021-11-07 02:25:22,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:25:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-11-07 02:25:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1377. [2021-11-07 02:25:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.4353197674418605) internal successors, (1975), 1376 states have internal predecessors, (1975), 0 states have call successors, (0), 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 02:25:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1975 transitions. [2021-11-07 02:25:22,948 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1975 transitions. Word has length 133 [2021-11-07 02:25:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:22,948 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 1975 transitions. [2021-11-07 02:25:22,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 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 02:25:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1975 transitions. [2021-11-07 02:25:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 02:25:22,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:22,952 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 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] [2021-11-07 02:25:22,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:23,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:25:23,168 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:25:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash -197856968, now seen corresponding path program 1 times [2021-11-07 02:25:23,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:23,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008657131] [2021-11-07 02:25:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:23,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:23,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:23,170 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:23,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:25:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:24,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:25:24,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:24,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:24,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:24,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:24,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:24,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:24,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:25,397 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:25:25,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:25:26,523 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:25:26,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:25:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:25:26,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:25:27,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:27,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008657131] [2021-11-07 02:25:27,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008657131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:27,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:25:27,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:25:27,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223697144] [2021-11-07 02:25:27,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:25:27,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:27,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:25:27,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:25:27,115 INFO L87 Difference]: Start difference. First operand 1377 states and 1975 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 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 02:25:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:56,596 INFO L93 Difference]: Finished difference Result 3358 states and 4793 transitions. [2021-11-07 02:25:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:25:56,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 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 133 [2021-11-07 02:25:56,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:56,609 INFO L225 Difference]: With dead ends: 3358 [2021-11-07 02:25:56,609 INFO L226 Difference]: Without dead ends: 1993 [2021-11-07 02:25:56,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:25:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2021-11-07 02:25:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1472. [2021-11-07 02:25:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 1.4201223657375934) internal successors, (2089), 1471 states have internal predecessors, (2089), 0 states have call successors, (0), 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 02:25:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2089 transitions. [2021-11-07 02:25:56,708 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2089 transitions. Word has length 133 [2021-11-07 02:25:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:56,711 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 2089 transitions. [2021-11-07 02:25:56,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 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 02:25:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2089 transitions. [2021-11-07 02:25:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 02:25:56,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:56,715 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 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] [2021-11-07 02:25:56,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 02:25:56,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:25:56,939 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:25:56,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:56,940 INFO L85 PathProgramCache]: Analyzing trace with hash 584684213, now seen corresponding path program 1 times [2021-11-07 02:25:56,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:56,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209508210] [2021-11-07 02:25:56,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:56,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:56,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:56,942 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:56,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:25:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:58,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:25:58,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:58,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:25:58,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:58,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:58,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:58,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:58,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:25:59,349 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:25:59,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:26:00,819 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:26:00,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:26:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:26:00,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:26:01,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:01,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209508210] [2021-11-07 02:26:01,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209508210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:01,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:01,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:26:01,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788317338] [2021-11-07 02:26:01,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:26:01,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:26:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:26:01,446 INFO L87 Difference]: Start difference. First operand 1472 states and 2089 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:26:29,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:29,426 INFO L93 Difference]: Finished difference Result 3412 states and 4837 transitions. [2021-11-07 02:26:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:26:29,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 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 134 [2021-11-07 02:26:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:29,436 INFO L225 Difference]: With dead ends: 3412 [2021-11-07 02:26:29,436 INFO L226 Difference]: Without dead ends: 1952 [2021-11-07 02:26:29,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:26:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2021-11-07 02:26:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1488. [2021-11-07 02:26:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.4189643577673168) internal successors, (2110), 1487 states have internal predecessors, (2110), 0 states have call successors, (0), 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 02:26:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2110 transitions. [2021-11-07 02:26:29,536 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2110 transitions. Word has length 134 [2021-11-07 02:26:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:29,537 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2110 transitions. [2021-11-07 02:26:29,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:26:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2110 transitions. [2021-11-07 02:26:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 02:26:29,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:29,541 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 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] [2021-11-07 02:26:29,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:29,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:29,760 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:26:29,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2002780513, now seen corresponding path program 1 times [2021-11-07 02:26:29,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:29,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080736735] [2021-11-07 02:26:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:29,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:29,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:29,762 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:29,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:26:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:31,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:26:31,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:31,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:26:31,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:26:31,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:26:31,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:26:31,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:26:31,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:26:31,976 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:26:31,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:26:33,196 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:26:33,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-11-07 02:26:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:26:33,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 02:26:33,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:33,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080736735] [2021-11-07 02:26:33,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080736735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:33,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:33,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:26:33,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993805079] [2021-11-07 02:26:33,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:26:33,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:33,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:26:33,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:26:33,798 INFO L87 Difference]: Start difference. First operand 1488 states and 2110 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 02:27:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:27:04,060 INFO L93 Difference]: Finished difference Result 3406 states and 4818 transitions. [2021-11-07 02:27:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:27:04,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 134 [2021-11-07 02:27:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:27:04,069 INFO L225 Difference]: With dead ends: 3406 [2021-11-07 02:27:04,069 INFO L226 Difference]: Without dead ends: 1930 [2021-11-07 02:27:04,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:27:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2021-11-07 02:27:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1488. [2021-11-07 02:27:04,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.4082044384667114) internal successors, (2094), 1487 states have internal predecessors, (2094), 0 states have call successors, (0), 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 02:27:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2094 transitions. [2021-11-07 02:27:04,167 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2094 transitions. Word has length 134 [2021-11-07 02:27:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:27:04,167 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2094 transitions. [2021-11-07 02:27:04,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 02:27:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2094 transitions. [2021-11-07 02:27:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 02:27:04,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:27:04,171 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 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] [2021-11-07 02:27:04,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:04,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:27:04,388 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:27:04,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:27:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2021-11-07 02:27:04,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:27:04,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477881860] [2021-11-07 02:27:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:04,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:27:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:27:04,390 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:27:04,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:27:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:27:09,858 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:27:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:27:15,690 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 02:27:15,690 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:27:15,691 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:27:15,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:15,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:27:15,911 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:27:15,914 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:27:16,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:27:16 BoogieIcfgContainer [2021-11-07 02:27:16,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:27:16,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:27:16,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:27:16,122 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:27:16,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:19" (3/4) ... [2021-11-07 02:27:16,124 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 02:27:16,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:27:16,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:27:16,275 INFO L168 Benchmark]: Toolchain (without parser) took 487982.77 ms. Allocated memory was 58.7 MB in the beginning and 109.1 MB in the end (delta: 50.3 MB). Free memory was 34.1 MB in the beginning and 46.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:27:16,275 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 7.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:27:16,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 934.44 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 37.1 MB in the end (delta: -3.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:27:16,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.22 ms. Allocated memory is still 71.3 MB. Free memory was 37.1 MB in the beginning and 49.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:27:16,276 INFO L168 Benchmark]: Boogie Preprocessor took 129.31 ms. Allocated memory is still 71.3 MB. Free memory was 49.8 MB in the beginning and 42.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:27:16,281 INFO L168 Benchmark]: RCFGBuilder took 9962.66 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 42.9 MB in the beginning and 40.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:27:16,281 INFO L168 Benchmark]: TraceAbstraction took 476695.32 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 40.0 MB in the beginning and 39.4 MB in the end (delta: 590.8 kB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:27:16,281 INFO L168 Benchmark]: Witness Printer took 152.47 ms. Allocated memory is still 109.1 MB. Free memory was 39.4 MB in the beginning and 46.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:27:16,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 7.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 934.44 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 37.1 MB in the end (delta: -3.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.22 ms. Allocated memory is still 71.3 MB. Free memory was 37.1 MB in the beginning and 49.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 129.31 ms. Allocated memory is still 71.3 MB. Free memory was 49.8 MB in the beginning and 42.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9962.66 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 42.9 MB in the beginning and 40.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 476695.32 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 40.0 MB in the beginning and 39.4 MB in the end (delta: 590.8 kB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. * Witness Printer took 152.47 ms. Allocated memory is still 109.1 MB. Free memory was 39.4 MB in the beginning and 46.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1658]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1065] SSL *s ; [L1069] s = malloc (sizeof (SSL)) [L1070] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1071] EXPR s->s3 [L1071] s->s3->flags = __VERIFIER_nondet_long() [L1072] EXPR s->s3 [L1072] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1073] EXPR s->s3 [L1073] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1074] EXPR s->s3 [L1074] EXPR (s->s3)->tmp.new_cipher [L1074] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1075] EXPR s->s3 [L1075] s->s3->tmp.next_state = __VERIFIER_nondet_int() [L1076] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1077] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1078] s->ctx = malloc(sizeof(SSL_CTX)) [L1079] EXPR s->ctx [L1079] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1080] s->state = 12292 [L1081] s->version = __VERIFIER_nondet_int() [L1082] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1083] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1090] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1091] unsigned long tmp ; [L1092] unsigned long l ; [L1093] long num1 ; [L1094] void (*cb)() ; [L1095] int ret ; [L1096] int new_state ; [L1097] int state ; [L1098] int skip ; [L1099] int *tmp___0 ; [L1100] int tmp___1 = __VERIFIER_nondet_int(); [L1101] int tmp___2 = __VERIFIER_nondet_int(); [L1102] int tmp___3 ; [L1103] int tmp___4 ; [L1104] int tmp___5 ; [L1105] int tmp___6 ; [L1106] int tmp___7 ; [L1107] int tmp___8 ; [L1108] long tmp___9 ; [L1110] int blastFlag ; [L1113] blastFlag = 0 [L1114] s->state = 12292 [L1115] s->hit = __VERIFIER_nondet_int() [L1117] tmp = __VERIFIER_nondet_int() [L1118] cb = (void (*)())((void *)0) [L1119] ret = -1 [L1120] skip = 0 [L1121] tmp___0 = (int*)malloc(sizeof(int)) [L1122] *tmp___0 = 0 [L1123] EXPR s->info_callback VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1123] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1124] EXPR s->info_callback [L1124] cb = s->info_callback [L1132] EXPR s->in_handshake [L1132] s->in_handshake += 1 [L1133] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1146] COND TRUE s->state == 12292 [L1249] s->new_session = 1 [L1250] s->state = 4096 [L1251] EXPR s->ctx [L1251] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1251] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1256] s->server = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1257] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1262] EXPR s->version VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1262] COND FALSE !((s->version & 65280) != 768) [L1268] s->type = 4096 [L1269] EXPR s->init_buf VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1269] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1281] tmp___4 = __VERIFIER_nondet_int() [L1282] COND FALSE !(! tmp___4) [L1288] tmp___5 = __VERIFIER_nondet_int() [L1289] COND FALSE !(! tmp___5) [L1295] s->state = 4368 [L1296] EXPR s->ctx [L1296] EXPR (s->ctx)->stats.sess_connect [L1296] (s->ctx)->stats.sess_connect += 1 [L1297] s->init_num = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1161] COND TRUE s->state == 4368 [L1301] s->shutdown = 0 [L1302] ret = __VERIFIER_nondet_int() [L1303] COND TRUE blastFlag == 0 [L1304] blastFlag = 1 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1308] COND FALSE !(ret <= 0) [L1313] s->state = 4384 [L1314] s->init_num = 0 [L1315] EXPR s->bbio [L1315] EXPR s->wbio VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1315] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1167] COND TRUE s->state == 4384 [L1323] ret = __VERIFIER_nondet_int() [L1324] COND TRUE blastFlag == 1 [L1325] blastFlag = 2 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1329] COND FALSE !(ret <= 0) [L1334] s->hit VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1334] COND FALSE !(s->hit) [L1337] s->state = 4400 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1339] s->init_num = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1173] COND TRUE s->state == 4400 [L1343] EXPR s->s3 [L1343] EXPR (s->s3)->tmp.new_cipher [L1343] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1343] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1346] ret = __VERIFIER_nondet_int() [L1347] COND TRUE blastFlag == 2 [L1348] blastFlag = 3 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1352] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1358] s->state = 4416 [L1359] s->init_num = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1179] COND TRUE s->state == 4416 [L1363] ret = __VERIFIER_nondet_int() [L1364] COND TRUE blastFlag == 3 [L1365] blastFlag = 4 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1369] COND FALSE !(ret <= 0) [L1374] s->state = 4432 [L1375] s->init_num = 0 [L1376] tmp___6 = __VERIFIER_nondet_int() [L1377] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1185] COND TRUE s->state == 4432 [L1386] ret = __VERIFIER_nondet_int() [L1387] COND FALSE !(blastFlag == 5) VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1392] COND FALSE !(ret <= 0) [L1397] s->state = 4448 [L1398] s->init_num = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1185] COND FALSE !(s->state == 4432) [L1188] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1188] COND FALSE !(s->state == 4433) [L1191] EXPR s->state VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1191] COND TRUE s->state == 4448 [L1402] ret = __VERIFIER_nondet_int() [L1403] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={-1073741745:0}] [L1658] reach_error() VAL [init=1, SSLv3_client_data={-1073741745:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 476.4s, OverallIterations: 16, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 409.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2743 SDtfs, 2722 SDslu, 6073 SDs, 0 SdLazy, 5289 SolverSat, 586 SolverUnsat, 44 SolverUnknown, 0 SolverNotchecked, 397.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3173 GetRequests, 3094 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1488occurred in iteration=14, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 6852 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 13.8s SatisfiabilityAnalysisTime, 34.3s InterpolantComputationTime, 1727 NumberOfCodeBlocks, 1727 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3150 ConstructedInterpolants, 0 QuantifiedInterpolants, 18571 SizeOfPredicates, 72 NumberOfNonLiveVariables, 4614 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 4372/4372 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 02:27:16,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adc1125-5c3e-4831-a30b-7d03c9329c2f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE