./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.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_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/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_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/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_43a940a6-e065-4142-9704-65bc9e401fa8/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 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:09:04,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:09:04,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:09:04,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:09:04,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:09:04,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:09:04,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:09:04,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:09:04,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:09:04,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:09:04,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:09:04,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:09:04,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:09:04,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:09:04,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:09:04,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:09:04,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:09:04,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:09:04,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:09:04,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:09:04,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:09:04,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:09:04,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:09:04,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:09:04,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:09:04,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:09:04,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:09:04,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:09:04,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:09:04,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:09:04,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:09:04,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:09:04,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:09:04,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:09:04,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:09:04,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:09:04,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:09:04,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:09:04,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:09:04,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:09:04,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:09:04,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:09:04,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:09:04,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:09:04,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:09:04,804 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:09:04,804 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:09:04,804 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:09:04,804 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:09:04,805 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:09:04,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:09:04,805 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:09:04,805 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:09:04,805 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:09:04,806 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:09:04,806 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:09:04,806 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:09:04,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:09:04,807 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:09:04,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:09:04,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:09:04,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:09:04,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:09:04,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:09:04,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:09:04,809 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:09:04,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:09:04,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:09:04,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:09:04,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:09:04,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:09:04,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:09:04,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:04,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:09:04,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:09:04,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:09:04,811 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:09:04,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:09:04,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:09:04,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:09:04,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:09:04,813 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_43a940a6-e065-4142-9704-65bc9e401fa8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2021-11-07 02:09:05,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:09:05,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:09:05,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:09:05,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:09:05,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:09:05,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-07 02:09:05,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data/4992ed718/89a9192d117b4f60afcc5d11c2b6cc2c/FLAG756c1cf8a [2021-11-07 02:09:06,105 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:09:06,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-07 02:09:06,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data/4992ed718/89a9192d117b4f60afcc5d11c2b6cc2c/FLAG756c1cf8a [2021-11-07 02:09:06,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data/4992ed718/89a9192d117b4f60afcc5d11c2b6cc2c [2021-11-07 02:09:06,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:09:06,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:09:06,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:06,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:09:06,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:09:06,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:06" (1/1) ... [2021-11-07 02:09:06,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cc92c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:06, skipping insertion in model container [2021-11-07 02:09:06,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:06" (1/1) ... [2021-11-07 02:09:06,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:09:06,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:06,929 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_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-07 02:09:07,317 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_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-07 02:09:07,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:07,336 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:09:07,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@27ea88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:07, skipping insertion in model container [2021-11-07 02:09:07,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:07,337 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:09:07,340 INFO L168 Benchmark]: Toolchain (without parser) took 1124.44 ms. Allocated memory is still 113.2 MB. Free memory was 66.5 MB in the beginning and 65.6 MB in the end (delta: 860.0 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:07,342 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory is still 87.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:09:07,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1121.33 ms. Allocated memory is still 113.2 MB. Free memory was 66.3 MB in the beginning and 65.6 MB in the end (delta: 685.4 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:07,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory is still 87.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1121.33 ms. Allocated memory is still 113.2 MB. Free memory was 66.3 MB in the beginning and 65.6 MB in the end (delta: 685.4 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/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_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/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_43a940a6-e065-4142-9704-65bc9e401fa8/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 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:09:10,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:09:10,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:09:10,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:09:10,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:09:10,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:09:10,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:09:10,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:09:10,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:09:10,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:09:10,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:09:10,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:09:10,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:09:10,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:09:10,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:09:10,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:09:10,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:09:10,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:09:10,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:09:10,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:09:10,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:09:10,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:09:10,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:09:10,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:09:10,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:09:10,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:09:10,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:09:10,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:09:10,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:09:10,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:09:10,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:09:10,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:09:10,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:09:10,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:09:10,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:09:10,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:09:10,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:09:10,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:09:10,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:09:10,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:09:10,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:09:10,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:09:10,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:09:10,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:09:10,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:09:10,353 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:09:10,353 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:09:10,353 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:09:10,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:09:10,354 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:09:10,354 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:09:10,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:09:10,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:09:10,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:09:10,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:09:10,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:09:10,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:09:10,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:09:10,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:09:10,359 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:09:10,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:09:10,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:09:10,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:09:10,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:09:10,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:09:10,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:09:10,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:09:10,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:09:10,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:10,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:09:10,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:09:10,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:09:10,364 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:09:10,364 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:10,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:09:10,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:09:10,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:09:10,366 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_43a940a6-e065-4142-9704-65bc9e401fa8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2021-11-07 02:09:10,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:09:10,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:09:10,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:09:10,902 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:09:10,903 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:09:10,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-07 02:09:10,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data/fc4be8995/3cbf8a4b2e8040de9d921076e97ce5c9/FLAGc74fa2100 [2021-11-07 02:09:11,960 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:09:11,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-07 02:09:11,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data/fc4be8995/3cbf8a4b2e8040de9d921076e97ce5c9/FLAGc74fa2100 [2021-11-07 02:09:12,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/data/fc4be8995/3cbf8a4b2e8040de9d921076e97ce5c9 [2021-11-07 02:09:12,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:09:12,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:09:12,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:12,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:09:12,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:09:12,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:12" (1/1) ... [2021-11-07 02:09:12,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1521eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:12, skipping insertion in model container [2021-11-07 02:09:12,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:12" (1/1) ... [2021-11-07 02:09:12,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:09:12,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:13,327 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_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-07 02:09:13,756 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_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-07 02:09:13,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:13,777 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:09:13,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:13,842 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_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-07 02:09:14,011 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_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-07 02:09:14,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:14,018 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:09:14,050 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_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-07 02:09:14,174 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_43a940a6-e065-4142-9704-65bc9e401fa8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-07 02:09:14,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:14,228 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:09:14,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14 WrapperNode [2021-11-07 02:09:14,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:14,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:09:14,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:09:14,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:09:14,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:09:14,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:09:14,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:09:14,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:09:14,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:14,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:09:14,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:09:14,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:09:14,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:09:14,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (1/1) ... [2021-11-07 02:09:15,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:15,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:15,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:09:15,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:09:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:09:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:09:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:09:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:09:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:09:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:09:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:09:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:09:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:09:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:09:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:09:15,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:09:27,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:09:27,193 INFO L299 CfgBuilder]: Removed 1066 assume(true) statements. [2021-11-07 02:09:27,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:27 BoogieIcfgContainer [2021-11-07 02:09:27,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:09:27,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:09:27,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:09:27,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:09:27,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:09:12" (1/3) ... [2021-11-07 02:09:27,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bee22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:27, skipping insertion in model container [2021-11-07 02:09:27,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:14" (2/3) ... [2021-11-07 02:09:27,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bee22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:27, skipping insertion in model container [2021-11-07 02:09:27,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:27" (3/3) ... [2021-11-07 02:09:27,212 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-1.i [2021-11-07 02:09:27,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:09:27,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 501 error locations. [2021-11-07 02:09:27,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:09:27,316 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:09:27,316 INFO L340 AbstractCegarLoop]: Starting to check reachability of 501 error locations. [2021-11-07 02:09:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 2157 states, 1655 states have (on average 1.9716012084592145) internal successors, (3263), 2156 states have internal predecessors, (3263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:09:27,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:27,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:27,393 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash 239437319, now seen corresponding path program 1 times [2021-11-07 02:09:27,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:27,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714709906] [2021-11-07 02:09:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:27,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:27,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:27,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:27,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:09:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:27,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:09:27,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:27,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:27,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:27,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714709906] [2021-11-07 02:09:27,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714709906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:27,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:27,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:09:27,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027627975] [2021-11-07 02:09:27,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:09:27,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:09:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:09:27,825 INFO L87 Difference]: Start difference. First operand has 2157 states, 1655 states have (on average 1.9716012084592145) internal successors, (3263), 2156 states have internal predecessors, (3263), 0 states have call successors, (0), 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 02:09:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:28,053 INFO L93 Difference]: Finished difference Result 4312 states and 6524 transitions. [2021-11-07 02:09:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:09:28,054 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 02:09:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:28,101 INFO L225 Difference]: With dead ends: 4312 [2021-11-07 02:09:28,101 INFO L226 Difference]: Without dead ends: 2153 [2021-11-07 02:09:28,116 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 02:09:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-07 02:09:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2021-11-07 02:09:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 1652 states have (on average 1.6343825665859564) internal successors, (2700), 2152 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2700 transitions. [2021-11-07 02:09:28,270 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2700 transitions. Word has length 9 [2021-11-07 02:09:28,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:28,270 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2700 transitions. [2021-11-07 02:09:28,271 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 02:09:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2700 transitions. [2021-11-07 02:09:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:09:28,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:28,274 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 02:09:28,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:28,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:28,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:28,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash 627540097, now seen corresponding path program 1 times [2021-11-07 02:09:28,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:28,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778260781] [2021-11-07 02:09:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:28,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:28,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:28,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:09:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:28,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:28,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:28,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:29,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:29,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778260781] [2021-11-07 02:09:29,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778260781] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:29,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:29,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:09:29,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655879900] [2021-11-07 02:09:29,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:29,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:29,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:09:29,160 INFO L87 Difference]: Start difference. First operand 2153 states and 2700 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 02:09:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:29,499 INFO L93 Difference]: Finished difference Result 4224 states and 5293 transitions. [2021-11-07 02:09:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:29,500 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 02:09:29,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:29,515 INFO L225 Difference]: With dead ends: 4224 [2021-11-07 02:09:29,515 INFO L226 Difference]: Without dead ends: 2162 [2021-11-07 02:09:29,519 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 02:09:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2021-11-07 02:09:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2156. [2021-11-07 02:09:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1655 states have (on average 1.6283987915407856) internal successors, (2695), 2155 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2695 transitions. [2021-11-07 02:09:29,597 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2695 transitions. Word has length 44 [2021-11-07 02:09:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:29,597 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2695 transitions. [2021-11-07 02:09:29,599 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 02:09:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2695 transitions. [2021-11-07 02:09:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:09:29,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:29,604 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 02:09:29,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:29,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:29,817 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash -317348363, now seen corresponding path program 1 times [2021-11-07 02:09:29,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:29,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502617141] [2021-11-07 02:09:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:29,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:29,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:29,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:29,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:09:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:30,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:09:30,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:30,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:31,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:31,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502617141] [2021-11-07 02:09:31,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502617141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:31,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:31,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 02:09:31,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356195805] [2021-11-07 02:09:31,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:09:31,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:31,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:09:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:09:31,070 INFO L87 Difference]: Start difference. First operand 2156 states and 2695 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 02:09:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:31,337 INFO L93 Difference]: Finished difference Result 4220 states and 5270 transitions. [2021-11-07 02:09:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:31,338 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 02:09:31,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:31,354 INFO L225 Difference]: With dead ends: 4220 [2021-11-07 02:09:31,355 INFO L226 Difference]: Without dead ends: 2155 [2021-11-07 02:09:31,363 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 02:09:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2021-11-07 02:09:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2150. [2021-11-07 02:09:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1649 states have (on average 1.6282595512431777) internal successors, (2685), 2149 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2685 transitions. [2021-11-07 02:09:31,422 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2685 transitions. Word has length 44 [2021-11-07 02:09:31,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:31,422 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 2685 transitions. [2021-11-07 02:09:31,423 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 02:09:31,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2685 transitions. [2021-11-07 02:09:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:09:31,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:31,430 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 02:09:31,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:31,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:31,643 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:31,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:31,644 INFO L85 PathProgramCache]: Analyzing trace with hash -575513801, now seen corresponding path program 1 times [2021-11-07 02:09:31,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:31,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357374964] [2021-11-07 02:09:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:31,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:31,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:31,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:31,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:09:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:32,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:32,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:32,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:32,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:32,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:32,171 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 02:09:32,172 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 02:09:32,265 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 02:09:32,266 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 02:09:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:32,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:32,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:32,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357374964] [2021-11-07 02:09:32,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357374964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:32,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:32,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:09:32,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553359154] [2021-11-07 02:09:32,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:32,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:32,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:32,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:09:32,641 INFO L87 Difference]: Start difference. First operand 2150 states and 2685 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 02:09:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:40,506 INFO L93 Difference]: Finished difference Result 8367 states and 10436 transitions. [2021-11-07 02:09:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:09:40,507 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 02:09:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:40,549 INFO L225 Difference]: With dead ends: 8367 [2021-11-07 02:09:40,549 INFO L226 Difference]: Without dead ends: 6307 [2021-11-07 02:09:40,555 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 02:09:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2021-11-07 02:09:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 2152. [2021-11-07 02:09:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1651 states have (on average 1.6274984857662023) internal successors, (2687), 2151 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2687 transitions. [2021-11-07 02:09:40,661 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2687 transitions. Word has length 44 [2021-11-07 02:09:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:40,661 INFO L470 AbstractCegarLoop]: Abstraction has 2152 states and 2687 transitions. [2021-11-07 02:09:40,662 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 02:09:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2687 transitions. [2021-11-07 02:09:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 02:09:40,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:40,666 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:40,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:40,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:40,881 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:40,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:40,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1988614245, now seen corresponding path program 1 times [2021-11-07 02:09:40,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:40,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321643061] [2021-11-07 02:09:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:40,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:40,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:09:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:41,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:41,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:41,672 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 02:09:41,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:41,979 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 02:09:41,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:41,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321643061] [2021-11-07 02:09:41,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321643061] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:41,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:41,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:09:41,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862545746] [2021-11-07 02:09:41,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:41,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:41,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:41,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:09:41,982 INFO L87 Difference]: Start difference. First operand 2152 states and 2687 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:42,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:42,175 INFO L93 Difference]: Finished difference Result 4309 states and 5382 transitions. [2021-11-07 02:09:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:42,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 96 [2021-11-07 02:09:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:42,191 INFO L225 Difference]: With dead ends: 4309 [2021-11-07 02:09:42,192 INFO L226 Difference]: Without dead ends: 2161 [2021-11-07 02:09:42,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 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 02:09:42,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-11-07 02:09:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2155. [2021-11-07 02:09:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1654 states have (on average 1.6215235792019347) internal successors, (2682), 2154 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2682 transitions. [2021-11-07 02:09:42,265 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2682 transitions. Word has length 96 [2021-11-07 02:09:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:42,267 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2682 transitions. [2021-11-07 02:09:42,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2682 transitions. [2021-11-07 02:09:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 02:09:42,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:42,270 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:42,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:42,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:42,489 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:42,490 INFO L85 PathProgramCache]: Analyzing trace with hash -312724623, now seen corresponding path program 1 times [2021-11-07 02:09:42,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:42,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040880802] [2021-11-07 02:09:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:42,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:42,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:42,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:42,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:09:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:43,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:43,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:43,676 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 02:09:43,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:44,279 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 02:09:44,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:44,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040880802] [2021-11-07 02:09:44,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040880802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:44,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:44,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:09:44,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341740254] [2021-11-07 02:09:44,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:44,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:44,283 INFO L87 Difference]: Start difference. First operand 2155 states and 2682 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:45,419 INFO L93 Difference]: Finished difference Result 6390 states and 7950 transitions. [2021-11-07 02:09:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 02:09:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:45,449 INFO L225 Difference]: With dead ends: 6390 [2021-11-07 02:09:45,449 INFO L226 Difference]: Without dead ends: 4239 [2021-11-07 02:09:45,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:45,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-07 02:09:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3237. [2021-11-07 02:09:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2736 states have (on average 1.7430555555555556) internal successors, (4769), 3236 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4769 transitions. [2021-11-07 02:09:45,567 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4769 transitions. Word has length 96 [2021-11-07 02:09:45,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:45,567 INFO L470 AbstractCegarLoop]: Abstraction has 3237 states and 4769 transitions. [2021-11-07 02:09:45,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4769 transitions. [2021-11-07 02:09:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 02:09:45,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:45,570 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:45,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:45,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:45,790 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1091132224, now seen corresponding path program 1 times [2021-11-07 02:09:45,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:45,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004848524] [2021-11-07 02:09:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:45,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:45,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:45,795 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:45,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:09:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:46,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:46,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:46,745 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 02:09:46,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:47,078 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 02:09:47,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:47,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004848524] [2021-11-07 02:09:47,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004848524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:47,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:47,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:47,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968281978] [2021-11-07 02:09:47,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:47,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:47,081 INFO L87 Difference]: Start difference. First operand 3237 states and 4769 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 02:09:47,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:47,227 INFO L93 Difference]: Finished difference Result 6432 states and 9495 transitions. [2021-11-07 02:09:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:47,229 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 103 [2021-11-07 02:09:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:47,249 INFO L225 Difference]: With dead ends: 6432 [2021-11-07 02:09:47,250 INFO L226 Difference]: Without dead ends: 3240 [2021-11-07 02:09:47,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:47,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-11-07 02:09:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 3240. [2021-11-07 02:09:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 2739 states have (on average 1.742241694048923) internal successors, (4772), 3239 states have internal predecessors, (4772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4772 transitions. [2021-11-07 02:09:47,356 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4772 transitions. Word has length 103 [2021-11-07 02:09:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:47,359 INFO L470 AbstractCegarLoop]: Abstraction has 3240 states and 4772 transitions. [2021-11-07 02:09:47,359 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 02:09:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4772 transitions. [2021-11-07 02:09:47,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 02:09:47,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:47,361 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 02:09:47,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:47,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:47,582 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash -785976308, now seen corresponding path program 1 times [2021-11-07 02:09:47,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:47,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487766178] [2021-11-07 02:09:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:47,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:47,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:47,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:09:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:48,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:48,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:48,621 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 02:09:48,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:49,045 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 02:09:49,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:49,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487766178] [2021-11-07 02:09:49,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487766178] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:49,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [606186984] [2021-11-07 02:09:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:49,047 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:49,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:49,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:49,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:09:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:49,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:49,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:50,330 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 02:09:50,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:50,865 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 02:09:50,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [606186984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:50,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:50,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 02:09:50,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81049065] [2021-11-07 02:09:50,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:50,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:09:50,869 INFO L87 Difference]: Start difference. First operand 3240 states and 4772 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 02:09:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:55,524 INFO L93 Difference]: Finished difference Result 5394 states and 7453 transitions. [2021-11-07 02:09:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:55,527 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 02:09:55,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:55,541 INFO L225 Difference]: With dead ends: 5394 [2021-11-07 02:09:55,541 INFO L226 Difference]: Without dead ends: 2199 [2021-11-07 02:09:55,546 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 02:09:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-07 02:09:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2199. [2021-11-07 02:09:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1698 states have (on average 1.6065959952885749) internal successors, (2728), 2198 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:55,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 2728 transitions. [2021-11-07 02:09:55,613 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 2728 transitions. Word has length 106 [2021-11-07 02:09:55,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:55,615 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 2728 transitions. [2021-11-07 02:09:55,615 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 02:09:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 2728 transitions. [2021-11-07 02:09:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 02:09:55,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:55,617 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 02:09:55,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:55,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:56,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:56,040 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:09:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash 530701390, now seen corresponding path program 1 times [2021-11-07 02:09:56,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:56,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150869448] [2021-11-07 02:09:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:56,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:56,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:56,043 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:56,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:09:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:56,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:56,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:57,155 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 02:09:57,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:57,669 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 02:09:57,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:57,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150869448] [2021-11-07 02:09:57,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150869448] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:57,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1314636345] [2021-11-07 02:09:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:57,670 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:57,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:57,674 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:57,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:09:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:58,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:58,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:59,166 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 02:09:59,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:59,504 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 02:09:59,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1314636345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:59,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916977491] [2021-11-07 02:09:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:59,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:59,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:59,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:09:59,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 02:10:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:00,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:10:00,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:00,819 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 02:10:00,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:01,205 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 02:10:01,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916977491] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:01,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:10:01,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 02:10:01,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586156495] [2021-11-07 02:10:01,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:10:01,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:01,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:10:01,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:10:01,209 INFO L87 Difference]: Start difference. First operand 2199 states and 2728 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 02:10:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:01,624 INFO L93 Difference]: Finished difference Result 4356 states and 5417 transitions. [2021-11-07 02:10:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:10:01,625 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 02:10:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:01,644 INFO L225 Difference]: With dead ends: 4356 [2021-11-07 02:10:01,644 INFO L226 Difference]: Without dead ends: 2207 [2021-11-07 02:10:01,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:10:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-07 02:10:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-07 02:10:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1706 states have (on average 1.6037514654161782) internal successors, (2736), 2206 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2736 transitions. [2021-11-07 02:10:01,714 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2736 transitions. Word has length 113 [2021-11-07 02:10:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:01,715 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2736 transitions. [2021-11-07 02:10:01,715 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 02:10:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2736 transitions. [2021-11-07 02:10:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 02:10:01,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:01,717 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 02:10:01,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:01,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:02,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:02,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:02,338 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:10:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1097119218, now seen corresponding path program 2 times [2021-11-07 02:10:02,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:02,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721613261] [2021-11-07 02:10:02,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:10:02,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:02,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:02,341 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:02,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:10:03,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:10:03,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:10:03,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:10:03,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:03,985 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 02:10:03,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:04,704 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 02:10:04,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:04,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721613261] [2021-11-07 02:10:04,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721613261] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:04,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1586926425] [2021-11-07 02:10:04,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:10:04,705 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:04,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:10:04,713 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:10:04,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:10:06,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:10:06,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:10:06,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:10:06,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:06,731 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 02:10:06,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:07,111 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 02:10:07,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1586926425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:07,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033783751] [2021-11-07 02:10:07,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:10:07,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:10:07,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:10:07,114 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:10:07,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 02:10:08,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:10:08,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:10:08,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:10:08,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:09,186 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 02:10:09,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:10,137 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 02:10:10,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033783751] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:10,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:10:10,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 02:10:10,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007261022] [2021-11-07 02:10:10,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 02:10:10,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 02:10:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 02:10:10,141 INFO L87 Difference]: Start difference. First operand 2207 states and 2736 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 02:10:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:14,716 INFO L93 Difference]: Finished difference Result 6523 states and 8120 transitions. [2021-11-07 02:10:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 02:10:14,718 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 02:10:14,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:14,739 INFO L225 Difference]: With dead ends: 6523 [2021-11-07 02:10:14,739 INFO L226 Difference]: Without dead ends: 4370 [2021-11-07 02:10:14,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 02:10:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-11-07 02:10:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2229. [2021-11-07 02:10:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1728 states have (on average 1.5966435185185186) internal successors, (2759), 2228 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2759 transitions. [2021-11-07 02:10:14,828 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2759 transitions. Word has length 121 [2021-11-07 02:10:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:14,828 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 2759 transitions. [2021-11-07 02:10:14,828 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 02:10:14,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2759 transitions. [2021-11-07 02:10:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 02:10:14,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:14,831 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 02:10:14,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 02:10:15,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:15,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 02:10:15,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:15,446 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 02:10:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1558493810, now seen corresponding path program 3 times [2021-11-07 02:10:15,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:15,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688373810] [2021-11-07 02:10:15,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:10:15,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:15,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:15,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:15,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:10:23,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 02:10:23,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:10:23,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:10:23,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:24,243 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 02:10:24,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:26,165 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 02:10:26,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:26,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688373810] [2021-11-07 02:10:26,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688373810] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:26,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1778364115] [2021-11-07 02:10:26,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:10:26,166 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:26,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:10:26,169 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:10:26,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 02:11:26,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 02:11:26,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:11:26,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:11:26,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:27,218 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 02:11:27,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:27,725 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 02:11:27,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1778364115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:11:27,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866704069] [2021-11-07 02:11:27,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:11:27,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:11:27,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:11:27,729 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:11:27,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a940a6-e065-4142-9704-65bc9e401fa8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process