./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.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_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/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_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/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_d799940a-1936-47fc-a981-f73b0c7f68a0/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 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:38:52,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:38:52,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:38:52,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:38:52,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:38:52,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:38:52,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:38:52,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:38:52,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:38:52,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:38:52,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:38:52,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:38:52,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:38:52,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:38:52,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:38:52,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:38:52,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:38:52,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:38:52,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:38:52,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:38:52,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:38:52,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:38:52,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:38:52,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:38:52,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:38:52,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:38:52,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:38:52,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:38:52,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:38:52,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:38:52,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:38:52,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:38:52,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:38:52,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:38:52,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:38:52,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:38:52,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:38:52,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:38:52,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:38:52,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:38:52,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:38:52,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:38:52,329 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:38:52,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:38:52,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:38:52,330 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:38:52,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:38:52,331 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:38:52,343 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:38:52,344 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:38:52,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:38:52,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:38:52,353 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:38:52,353 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:38:52,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:38:52,354 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:38:52,354 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:38:52,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:38:52,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:38:52,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:38:52,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:38:52,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:38:52,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:38:52,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:38:52,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:38:52,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:38:52,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:38:52,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:38:52,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:38:52,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:38:52,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:38:52,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:38:52,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:38:52,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:38:52,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:38:52,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:38:52,363 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:38:52,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:38:52,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:38:52,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:38:52,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:38:52,364 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_d799940a-1936-47fc-a981-f73b0c7f68a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2021-11-07 01:38:52,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:38:52,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:38:52,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:38:52,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:38:52,761 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:38:52,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 01:38:52,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data/f7c1b17b7/a83e2e271a3b4c339ec559ee2ee9ca5a/FLAG36e805513 [2021-11-07 01:38:53,603 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:38:53,604 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 01:38:53,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data/f7c1b17b7/a83e2e271a3b4c339ec559ee2ee9ca5a/FLAG36e805513 [2021-11-07 01:38:53,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data/f7c1b17b7/a83e2e271a3b4c339ec559ee2ee9ca5a [2021-11-07 01:38:53,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:38:53,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:38:53,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:38:53,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:38:53,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:38:53,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:53" (1/1) ... [2021-11-07 01:38:53,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c91c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:53, skipping insertion in model container [2021-11-07 01:38:53,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:53" (1/1) ... [2021-11-07 01:38:53,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:38:53,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:38:54,472 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_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 01:38:54,610 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_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 01:38:54,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:38:54,643 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:38:54,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fe65eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:54, skipping insertion in model container [2021-11-07 01:38:54,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:38:54,645 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:38:54,648 INFO L168 Benchmark]: Toolchain (without parser) took 864.10 ms. Allocated memory is still 100.7 MB. Free memory was 57.4 MB in the beginning and 65.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:38:54,649 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 75.9 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:38:54,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 860.50 ms. Allocated memory is still 100.7 MB. Free memory was 57.2 MB in the beginning and 65.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:38:54,653 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 100.7 MB. Free memory was 75.9 MB in the beginning and 75.9 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 860.50 ms. Allocated memory is still 100.7 MB. Free memory was 57.2 MB in the beginning and 65.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/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_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/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_d799940a-1936-47fc-a981-f73b0c7f68a0/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 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:38:57,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:38:57,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:38:57,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:38:57,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:38:57,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:38:57,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:38:57,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:38:57,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:38:57,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:38:57,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:38:57,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:38:57,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:38:57,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:38:57,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:38:57,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:38:57,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:38:57,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:38:57,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:38:57,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:38:57,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:38:57,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:38:57,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:38:57,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:38:57,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:38:57,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:38:57,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:38:57,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:38:57,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:38:57,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:38:57,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:38:57,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:38:57,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:38:57,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:38:57,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:38:57,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:38:57,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:38:57,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:38:57,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:38:57,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:38:57,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:38:57,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:38:57,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:38:57,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:38:57,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:38:57,838 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:38:57,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:38:57,839 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:38:57,839 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:38:57,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:38:57,840 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:38:57,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:38:57,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:38:57,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:38:57,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:38:57,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:38:57,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:38:57,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:38:57,845 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:38:57,846 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:38:57,846 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:38:57,846 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:38:57,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:38:57,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:38:57,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:38:57,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:38:57,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:38:57,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:38:57,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:38:57,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:38:57,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:38:57,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:38:57,850 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:38:57,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:38:57,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:38:57,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:38:57,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:38:57,852 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_d799940a-1936-47fc-a981-f73b0c7f68a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2021-11-07 01:38:58,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:38:58,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:38:58,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:38:58,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:38:58,412 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:38:58,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 01:38:58,505 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data/bdef8b210/8dbafc41b6ea41c198244b600e89eb43/FLAG00c4f8e12 [2021-11-07 01:38:59,513 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:38:59,513 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 01:38:59,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data/bdef8b210/8dbafc41b6ea41c198244b600e89eb43/FLAG00c4f8e12 [2021-11-07 01:38:59,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/data/bdef8b210/8dbafc41b6ea41c198244b600e89eb43 [2021-11-07 01:38:59,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:38:59,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:38:59,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:38:59,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:38:59,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:38:59,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:59" (1/1) ... [2021-11-07 01:38:59,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e84d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:59, skipping insertion in model container [2021-11-07 01:38:59,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:59" (1/1) ... [2021-11-07 01:38:59,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:38:59,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:00,320 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_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 01:39:00,501 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_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 01:39:00,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:00,530 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:39:00,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:00,587 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_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 01:39:00,721 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_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 01:39:00,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:00,740 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:39:00,825 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_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 01:39:00,936 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_d799940a-1936-47fc-a981-f73b0c7f68a0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 01:39:00,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:00,995 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:39:00,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00 WrapperNode [2021-11-07 01:39:00,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:00,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:00,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:39:00,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:39:01,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:01,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:39:01,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:39:01,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:39:01,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:39:01,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:39:01,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:39:01,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:39:01,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (1/1) ... [2021-11-07 01:39:01,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:01,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:01,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:39:01,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:39:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:39:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:39:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:39:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:39:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:39:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:39:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:39:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:39:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:39:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:39:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:39:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:39:09,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:39:09,869 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 01:39:09,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:09 BoogieIcfgContainer [2021-11-07 01:39:09,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:39:09,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:39:09,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:39:09,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:39:09,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:38:59" (1/3) ... [2021-11-07 01:39:09,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727be7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:09, skipping insertion in model container [2021-11-07 01:39:09,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:00" (2/3) ... [2021-11-07 01:39:09,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727be7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:09, skipping insertion in model container [2021-11-07 01:39:09,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:09" (3/3) ... [2021-11-07 01:39:09,888 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test3-1.i [2021-11-07 01:39:09,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:39:09,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:39:09,960 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:39:09,968 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 01:39:09,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:39:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:39:10,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:10,015 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:10,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-07 01:39:10,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:10,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631590858] [2021-11-07 01:39:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:10,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:10,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:10,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:10,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:39:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:10,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:39:10,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:10,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:10,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:10,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631590858] [2021-11-07 01:39:10,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631590858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:10,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:10,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:39:10,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439052272] [2021-11-07 01:39:10,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:39:10,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:10,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:39:10,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:39:10,528 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:10,603 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2021-11-07 01:39:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:39:10,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-07 01:39:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:10,630 INFO L225 Difference]: With dead ends: 402 [2021-11-07 01:39:10,631 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 01:39:10,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:39:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 01:39:10,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 01:39:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 197 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-07 01:39:10,731 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-07 01:39:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:10,732 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-07 01:39:10,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-07 01:39:10,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:39:10,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:10,734 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:10,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:10,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:10,949 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:10,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-07 01:39:10,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:10,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93345153] [2021-11-07 01:39:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:10,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:10,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:10,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:10,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:39:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:11,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:11,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:11,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:11,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:11,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93345153] [2021-11-07 01:39:11,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93345153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:11,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:11,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:39:11,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312737102] [2021-11-07 01:39:11,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:39:11,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:39:11,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:39:11,552 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:16,826 INFO L93 Difference]: Finished difference Result 502 states and 660 transitions. [2021-11-07 01:39:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:39:16,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 01:39:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:16,833 INFO L225 Difference]: With dead ends: 502 [2021-11-07 01:39:16,833 INFO L226 Difference]: Without dead ends: 304 [2021-11-07 01:39:16,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:39:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-07 01:39:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2021-11-07 01:39:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.3423728813559321) internal successors, (396), 300 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 396 transitions. [2021-11-07 01:39:16,864 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 396 transitions. Word has length 12 [2021-11-07 01:39:16,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:16,865 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 396 transitions. [2021-11-07 01:39:16,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 396 transitions. [2021-11-07 01:39:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:39:16,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:16,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:16,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:17,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:17,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:17,087 INFO L85 PathProgramCache]: Analyzing trace with hash 627335073, now seen corresponding path program 1 times [2021-11-07 01:39:17,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:17,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811771033] [2021-11-07 01:39:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:17,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:17,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:17,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:39:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:17,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:17,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:17,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:17,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811771033] [2021-11-07 01:39:17,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811771033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:17,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:17,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:39:17,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093859732] [2021-11-07 01:39:17,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:39:17,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:17,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:39:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:39:17,738 INFO L87 Difference]: Start difference. First operand 301 states and 396 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:17,931 INFO L93 Difference]: Finished difference Result 513 states and 674 transitions. [2021-11-07 01:39:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:39:17,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 44 [2021-11-07 01:39:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:17,937 INFO L225 Difference]: With dead ends: 513 [2021-11-07 01:39:17,938 INFO L226 Difference]: Without dead ends: 344 [2021-11-07 01:39:17,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:39:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-07 01:39:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 307. [2021-11-07 01:39:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 301 states have (on average 1.282392026578073) internal successors, (386), 306 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 386 transitions. [2021-11-07 01:39:17,983 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 386 transitions. Word has length 44 [2021-11-07 01:39:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:17,983 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 386 transitions. [2021-11-07 01:39:17,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 386 transitions. [2021-11-07 01:39:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:39:17,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:17,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:18,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:18,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:18,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:18,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:18,201 INFO L85 PathProgramCache]: Analyzing trace with hash -317553387, now seen corresponding path program 1 times [2021-11-07 01:39:18,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:18,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127460578] [2021-11-07 01:39:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:18,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:18,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:18,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:39:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:18,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:39:18,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:18,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:19,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:19,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127460578] [2021-11-07 01:39:19,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127460578] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:19,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:19,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:39:19,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137104089] [2021-11-07 01:39:19,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:39:19,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:39:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:39:19,568 INFO L87 Difference]: Start difference. First operand 307 states and 386 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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 01:39:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:19,740 INFO L93 Difference]: Finished difference Result 505 states and 628 transitions. [2021-11-07 01:39:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:39:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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 44 [2021-11-07 01:39:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:19,745 INFO L225 Difference]: With dead ends: 505 [2021-11-07 01:39:19,746 INFO L226 Difference]: Without dead ends: 330 [2021-11-07 01:39:19,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:39:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-07 01:39:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 295. [2021-11-07 01:39:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 294 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 366 transitions. [2021-11-07 01:39:19,792 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 366 transitions. Word has length 44 [2021-11-07 01:39:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:19,792 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 366 transitions. [2021-11-07 01:39:19,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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 01:39:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 366 transitions. [2021-11-07 01:39:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:39:19,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:19,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:19,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:20,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:20,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash -575718825, now seen corresponding path program 1 times [2021-11-07 01:39:20,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:20,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605234817] [2021-11-07 01:39:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:20,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:20,020 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:20,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:39:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:20,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:20,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:20,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:39:20,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:39:20,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:39:20,623 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:39:20,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:39:20,727 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:39:20,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:39:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:20,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:21,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:21,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605234817] [2021-11-07 01:39:21,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605234817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:21,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:21,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:39:21,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838876490] [2021-11-07 01:39:21,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:39:21,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:39:21,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:39:21,149 INFO L87 Difference]: Start difference. First operand 295 states and 366 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:31,372 INFO L93 Difference]: Finished difference Result 620 states and 749 transitions. [2021-11-07 01:39:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:39:31,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 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 44 [2021-11-07 01:39:31,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:31,377 INFO L225 Difference]: With dead ends: 620 [2021-11-07 01:39:31,378 INFO L226 Difference]: Without dead ends: 456 [2021-11-07 01:39:31,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:39:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-07 01:39:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 294. [2021-11-07 01:39:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 288 states have (on average 1.2638888888888888) internal successors, (364), 293 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 364 transitions. [2021-11-07 01:39:31,397 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 364 transitions. Word has length 44 [2021-11-07 01:39:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:31,397 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 364 transitions. [2021-11-07 01:39:31,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 364 transitions. [2021-11-07 01:39:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:39:31,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:31,401 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:31,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:31,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:31,621 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:31,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash 474525043, now seen corresponding path program 1 times [2021-11-07 01:39:31,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:31,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803517099] [2021-11-07 01:39:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:31,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:31,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:31,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:31,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:39:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:32,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:32,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:32,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:32,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:32,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803517099] [2021-11-07 01:39:32,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803517099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:32,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:32,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:39:32,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843105045] [2021-11-07 01:39:32,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:39:32,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:32,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:39:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:39:32,684 INFO L87 Difference]: Start difference. First operand 294 states and 364 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:32,822 INFO L93 Difference]: Finished difference Result 587 states and 733 transitions. [2021-11-07 01:39:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:39:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:39:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:32,834 INFO L225 Difference]: With dead ends: 587 [2021-11-07 01:39:32,835 INFO L226 Difference]: Without dead ends: 302 [2021-11-07 01:39:32,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:39:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-07 01:39:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2021-11-07 01:39:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.2040816326530612) internal successors, (354), 299 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 354 transitions. [2021-11-07 01:39:32,853 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 354 transitions. Word has length 71 [2021-11-07 01:39:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:32,853 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 354 transitions. [2021-11-07 01:39:32,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 354 transitions. [2021-11-07 01:39:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:39:32,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:32,856 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:32,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:33,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:33,072 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:33,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:33,073 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-07 01:39:33,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:33,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366172033] [2021-11-07 01:39:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:33,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:33,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:33,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:33,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:39:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:33,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:33,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:33,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:34,158 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:34,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366172033] [2021-11-07 01:39:34,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366172033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:34,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:34,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:39:34,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953590212] [2021-11-07 01:39:34,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:39:34,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:34,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:39:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:39:34,161 INFO L87 Difference]: Start difference. First operand 300 states and 354 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:34,240 INFO L93 Difference]: Finished difference Result 558 states and 665 transitions. [2021-11-07 01:39:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:39:34,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:39:34,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:34,244 INFO L225 Difference]: With dead ends: 558 [2021-11-07 01:39:34,245 INFO L226 Difference]: Without dead ends: 303 [2021-11-07 01:39:34,246 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:39:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-07 01:39:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-11-07 01:39:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 297 states have (on average 1.202020202020202) internal successors, (357), 302 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 357 transitions. [2021-11-07 01:39:34,267 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 357 transitions. Word has length 71 [2021-11-07 01:39:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:34,270 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 357 transitions. [2021-11-07 01:39:34,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 357 transitions. [2021-11-07 01:39:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:39:34,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:34,275 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:34,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:34,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:34,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1065048653, now seen corresponding path program 1 times [2021-11-07 01:39:34,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:34,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643155236] [2021-11-07 01:39:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:34,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:34,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:34,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:34,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:39:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:35,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:35,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:39:35,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:39:35,789 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:35,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643155236] [2021-11-07 01:39:35,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643155236] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:35,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [198497403] [2021-11-07 01:39:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:35,790 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:35,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:35,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:35,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:39:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:36,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:36,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:39:37,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:39:37,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [198497403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:37,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100834155] [2021-11-07 01:39:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:37,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:39:37,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:37,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:39:37,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:39:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:37,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:37,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:37,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:39:37,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:39:37,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:39:38,099 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:39:38,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:39:38,224 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:39:38,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:39:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:39:38,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:39:38,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100834155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:38,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:39:38,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 01:39:38,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280114724] [2021-11-07 01:39:38,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:39:38,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:39:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:39:38,574 INFO L87 Difference]: Start difference. First operand 303 states and 357 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:47,339 INFO L93 Difference]: Finished difference Result 465 states and 547 transitions. [2021-11-07 01:39:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:39:47,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 01:39:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:47,346 INFO L225 Difference]: With dead ends: 465 [2021-11-07 01:39:47,346 INFO L226 Difference]: Without dead ends: 440 [2021-11-07 01:39:47,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:39:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-07 01:39:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 305. [2021-11-07 01:39:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 299 states have (on average 1.2006688963210703) internal successors, (359), 304 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 359 transitions. [2021-11-07 01:39:47,366 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 359 transitions. Word has length 74 [2021-11-07 01:39:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:47,366 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 359 transitions. [2021-11-07 01:39:47,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 359 transitions. [2021-11-07 01:39:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:39:47,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:47,369 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:47,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:47,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:39:47,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:47,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:47,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:47,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -786181332, now seen corresponding path program 1 times [2021-11-07 01:39:47,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:47,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150103679] [2021-11-07 01:39:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:47,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:47,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:47,975 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:47,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:39:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:48,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:48,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:39:48,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:39:49,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:49,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150103679] [2021-11-07 01:39:49,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150103679] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:49,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2044807658] [2021-11-07 01:39:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:49,410 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:49,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:49,418 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:49,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:39:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:50,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:50,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:39:50,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:39:51,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2044807658] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:51,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:39:51,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:39:51,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854510071] [2021-11-07 01:39:51,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:39:51,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:39:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:39:51,296 INFO L87 Difference]: Start difference. First operand 305 states and 359 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 01:39:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:56,482 INFO L93 Difference]: Finished difference Result 692 states and 822 transitions. [2021-11-07 01:39:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:39:56,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 106 [2021-11-07 01:39:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:56,487 INFO L225 Difference]: With dead ends: 692 [2021-11-07 01:39:56,487 INFO L226 Difference]: Without dead ends: 432 [2021-11-07 01:39:56,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:39:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-07 01:39:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 380. [2021-11-07 01:39:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 374 states have (on average 1.2005347593582887) internal successors, (449), 379 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 449 transitions. [2021-11-07 01:39:56,513 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 449 transitions. Word has length 106 [2021-11-07 01:39:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:56,514 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 449 transitions. [2021-11-07 01:39:56,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 01:39:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 449 transitions. [2021-11-07 01:39:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:39:56,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:56,517 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:56,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:56,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:56,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:56,923 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:39:56,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash 530496366, now seen corresponding path program 1 times [2021-11-07 01:39:56,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:56,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910798725] [2021-11-07 01:39:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:56,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:56,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:56,931 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:56,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:39:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:57,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:57,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:39:58,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:39:58,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:58,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910798725] [2021-11-07 01:39:58,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910798725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:58,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [831165234] [2021-11-07 01:39:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:58,596 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:58,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:58,597 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:58,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:39:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:59,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:59,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:00,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:00,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [831165234] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:00,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532913560] [2021-11-07 01:40:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:00,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:00,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:00,422 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:00,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:40:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:01,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:40:01,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:40:01,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:40:02,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532913560] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:02,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:40:02,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:40:02,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347370360] [2021-11-07 01:40:02,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:40:02,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:40:02,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:40:02,153 INFO L87 Difference]: Start difference. First operand 380 states and 449 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:02,483 INFO L93 Difference]: Finished difference Result 718 states and 859 transitions. [2021-11-07 01:40:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:40:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 113 [2021-11-07 01:40:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:02,489 INFO L225 Difference]: With dead ends: 718 [2021-11-07 01:40:02,489 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 01:40:02,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:40:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 01:40:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-07 01:40:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 382 states have (on average 1.1963350785340314) internal successors, (457), 387 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 457 transitions. [2021-11-07 01:40:02,515 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 457 transitions. Word has length 113 [2021-11-07 01:40:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:02,516 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 457 transitions. [2021-11-07 01:40:02,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 457 transitions. [2021-11-07 01:40:02,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:40:02,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:02,519 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:02,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:02,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:02,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:03,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:03,126 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:03,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:03,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1097324242, now seen corresponding path program 2 times [2021-11-07 01:40:03,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:03,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877777227] [2021-11-07 01:40:03,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:40:03,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:03,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:03,129 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:03,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:40:04,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:40:04,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:04,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:40:04,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:40:04,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:40:05,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:05,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877777227] [2021-11-07 01:40:05,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877777227] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:05,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1152370737] [2021-11-07 01:40:05,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:40:05,596 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:05,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:05,604 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:05,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:40:07,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:40:07,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:07,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:40:07,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:40:07,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:40:08,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1152370737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:08,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263327551] [2021-11-07 01:40:08,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:40:08,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:08,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:08,396 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:08,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:40:09,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:40:09,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:09,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:40:09,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:40:10,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:40:11,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263327551] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:11,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:40:11,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:40:11,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299582278] [2021-11-07 01:40:11,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:40:11,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:11,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:40:11,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:40:11,528 INFO L87 Difference]: Start difference. First operand 388 states and 457 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:16,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:16,688 INFO L93 Difference]: Finished difference Result 1066 states and 1283 transitions. [2021-11-07 01:40:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:40:16,691 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 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 121 [2021-11-07 01:40:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:16,697 INFO L225 Difference]: With dead ends: 1066 [2021-11-07 01:40:16,697 INFO L226 Difference]: Without dead ends: 732 [2021-11-07 01:40:16,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:40:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-11-07 01:40:16,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 410. [2021-11-07 01:40:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.188118811881188) internal successors, (480), 409 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 480 transitions. [2021-11-07 01:40:16,770 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 480 transitions. Word has length 121 [2021-11-07 01:40:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:16,770 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 480 transitions. [2021-11-07 01:40:16,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 480 transitions. [2021-11-07 01:40:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 01:40:16,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:16,773 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:16,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:17,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-07 01:40:17,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-07 01:40:17,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:17,388 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1558698834, now seen corresponding path program 3 times [2021-11-07 01:40:17,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:17,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767793345] [2021-11-07 01:40:17,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:40:17,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:17,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:17,391 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:17,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:40:24,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:40:24,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:24,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:40:24,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:40:25,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:40:27,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:27,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767793345] [2021-11-07 01:40:27,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767793345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:27,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1192241704] [2021-11-07 01:40:27,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:40:27,400 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:27,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:27,401 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:27,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:41:43,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:41:43,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:41:43,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:41:43,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:41:44,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:41:45,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1192241704] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:45,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849769789] [2021-11-07 01:41:45,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:41:45,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:45,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:45,126 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:45,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d799940a-1936-47fc-a981-f73b0c7f68a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process