./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/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 4f54335276b565c52e40eef6a3f78ed9d794347e65877e7f862e4de86bcdea73 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:09:41,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:09:41,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:09:41,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:09:41,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:09:41,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:09:41,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:09:41,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:09:41,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:09:41,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:09:41,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:09:41,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:09:41,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:09:41,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:09:41,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:09:41,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:09:41,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:09:41,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:09:41,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:09:41,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:09:41,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:09:41,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:09:41,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:09:41,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:09:41,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:09:41,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:09:41,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:09:41,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:09:41,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:09:41,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:09:41,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:09:41,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:09:41,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:09:41,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:09:41,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:09:41,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:09:41,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:09:41,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:09:41,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:09:41,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:09:41,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:09:41,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:09:41,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:09:41,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:09:41,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:09:41,722 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:09:41,722 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:09:41,723 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:09:41,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:09:41,723 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:09:41,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:09:41,724 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:09:41,725 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:09:41,725 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:09:41,725 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:09:41,725 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:09:41,726 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:09:41,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:09:41,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:09:41,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:09:41,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:09:41,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:09:41,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:09:41,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:09:41,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:09:41,729 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:09:41,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:09:41,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:09:41,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:09:41,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:09:41,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:09:41,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:09:41,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:41,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:09:41,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:09:41,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:09:41,741 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:09:41,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:09:41,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:09:41,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:09:41,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:09:41,742 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f54335276b565c52e40eef6a3f78ed9d794347e65877e7f862e4de86bcdea73 [2021-11-07 01:09:41,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:09:41,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:09:42,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:09:42,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:09:42,004 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:09:42,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i [2021-11-07 01:09:42,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data/4e567dac9/b7e841668ab74cdebf3c14257b4a389d/FLAG31a05ef49 [2021-11-07 01:09:42,781 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:09:42,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i [2021-11-07 01:09:42,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data/4e567dac9/b7e841668ab74cdebf3c14257b4a389d/FLAG31a05ef49 [2021-11-07 01:09:42,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data/4e567dac9/b7e841668ab74cdebf3c14257b4a389d [2021-11-07 01:09:42,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:09:42,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:09:42,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:42,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:09:42,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:09:42,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:42" (1/1) ... [2021-11-07 01:09:42,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158a4d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:42, skipping insertion in model container [2021-11-07 01:09:42,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:42" (1/1) ... [2021-11-07 01:09:42,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:09:43,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:43,591 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[33021,33034] [2021-11-07 01:09:43,920 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[84583,84596] [2021-11-07 01:09:43,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:43,937 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:09:43,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c530381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:43, skipping insertion in model container [2021-11-07 01:09:43,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:43,938 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:09:43,941 INFO L168 Benchmark]: Toolchain (without parser) took 1022.40 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.4 MB in the beginning and 79.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:43,941 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:09:43,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1019.47 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.1 MB in the beginning and 79.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:43,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1019.47 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.1 MB in the beginning and 79.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/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 4f54335276b565c52e40eef6a3f78ed9d794347e65877e7f862e4de86bcdea73 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:09:46,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:09:46,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:09:46,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:09:46,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:09:46,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:09:46,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:09:46,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:09:46,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:09:46,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:09:46,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:09:46,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:09:46,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:09:46,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:09:46,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:09:46,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:09:46,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:09:46,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:09:46,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:09:46,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:09:46,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:09:46,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:09:46,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:09:46,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:09:46,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:09:46,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:09:46,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:09:46,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:09:46,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:09:46,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:09:46,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:09:46,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:09:46,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:09:46,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:09:46,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:09:46,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:09:46,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:09:46,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:09:46,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:09:46,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:09:46,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:09:46,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:09:46,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:09:46,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:09:46,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:09:46,455 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:09:46,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:09:46,456 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:09:46,456 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:09:46,456 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:09:46,456 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:09:46,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:09:46,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:09:46,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:09:46,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:09:46,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:09:46,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:09:46,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:09:46,463 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:09:46,463 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:09:46,463 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:09:46,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:09:46,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:09:46,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:09:46,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:09:46,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:09:46,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:09:46,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:09:46,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:46,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:09:46,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:09:46,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:09:46,466 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:09:46,466 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:46,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:09:46,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:09:46,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:09:46,467 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f54335276b565c52e40eef6a3f78ed9d794347e65877e7f862e4de86bcdea73 [2021-11-07 01:09:46,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:09:46,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:09:46,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:09:46,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:09:46,944 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:09:46,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i [2021-11-07 01:09:47,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data/e53944d88/bf99fc6508844b3dbbb41ed0cd7536ab/FLAG3cf33c92f [2021-11-07 01:09:47,831 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:09:47,832 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i [2021-11-07 01:09:47,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data/e53944d88/bf99fc6508844b3dbbb41ed0cd7536ab/FLAG3cf33c92f [2021-11-07 01:09:47,941 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/data/e53944d88/bf99fc6508844b3dbbb41ed0cd7536ab [2021-11-07 01:09:47,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:09:47,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:09:47,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:47,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:09:47,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:09:47,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:47" (1/1) ... [2021-11-07 01:09:47,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ddb7b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:47, skipping insertion in model container [2021-11-07 01:09:47,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:47" (1/1) ... [2021-11-07 01:09:47,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:09:48,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:48,607 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[33021,33034] [2021-11-07 01:09:48,913 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[84583,84596] [2021-11-07 01:09:48,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:48,935 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:09:48,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:48,975 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[33021,33034] [2021-11-07 01:09:49,146 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[84583,84596] [2021-11-07 01:09:49,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:49,156 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:09:49,207 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[33021,33034] [2021-11-07 01:09:49,312 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_49c1f906-e3ee-4867-b70e-548e3f9dcb89/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[84583,84596] [2021-11-07 01:09:49,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:49,359 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:09:49,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49 WrapperNode [2021-11-07 01:09:49,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:49,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:09:49,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:09:49,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:09:49,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:09:49,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:09:49,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:09:49,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:09:49,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:50,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:09:50,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:09:50,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:09:50,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:09:50,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:50,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:09:50,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:09:50,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:09:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:09:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:09:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:09:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:09:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:09:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:09:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:09:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:09:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:09:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:09:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:09:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:10:01,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:10:01,469 INFO L299 CfgBuilder]: Removed 1066 assume(true) statements. [2021-11-07 01:10:01,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:10:01 BoogieIcfgContainer [2021-11-07 01:10:01,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:10:01,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:10:01,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:10:01,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:10:01,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:09:47" (1/3) ... [2021-11-07 01:10:01,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc19f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:10:01, skipping insertion in model container [2021-11-07 01:10:01,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49" (2/3) ... [2021-11-07 01:10:01,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc19f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:10:01, skipping insertion in model container [2021-11-07 01:10:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:10:01" (3/3) ... [2021-11-07 01:10:01,485 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-1.i [2021-11-07 01:10:01,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:10:01,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 501 error locations. [2021-11-07 01:10:01,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:10:01,585 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:10:01,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 501 error locations. [2021-11-07 01:10:01,651 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 01:10:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:10:01,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:01,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:01,657 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 01:10:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash 239437319, now seen corresponding path program 1 times [2021-11-07 01:10:01,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:01,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856114390] [2021-11-07 01:10:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:01,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:01,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:01,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:01,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:10:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:01,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:10:01,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:01,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:01,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:01,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856114390] [2021-11-07 01:10:01,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856114390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:01,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:01,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:10:01,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689285634] [2021-11-07 01:10:01,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:10:02,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:02,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:10:02,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:10:02,036 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 01:10:02,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:02,211 INFO L93 Difference]: Finished difference Result 4312 states and 6524 transitions. [2021-11-07 01:10:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:10:02,213 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:10:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:02,257 INFO L225 Difference]: With dead ends: 4312 [2021-11-07 01:10:02,257 INFO L226 Difference]: Without dead ends: 2153 [2021-11-07 01:10:02,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:10:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-07 01:10:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2021-11-07 01:10:02,441 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 01:10:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2700 transitions. [2021-11-07 01:10:02,449 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2700 transitions. Word has length 9 [2021-11-07 01:10:02,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:02,450 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2700 transitions. [2021-11-07 01:10:02,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2700 transitions. [2021-11-07 01:10:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:10:02,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:02,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:02,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:02,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:02,666 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 01:10:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 627540097, now seen corresponding path program 1 times [2021-11-07 01:10:02,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:02,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298577456] [2021-11-07 01:10:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:02,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:02,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:02,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:10:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:02,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:02,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:03,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:03,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:03,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298577456] [2021-11-07 01:10:03,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298577456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:03,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:03,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:10:03,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554609171] [2021-11-07 01:10:03,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:10:03,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:10:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:10:03,282 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 01:10:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:03,570 INFO L93 Difference]: Finished difference Result 4224 states and 5293 transitions. [2021-11-07 01:10:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:03,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:10:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:03,585 INFO L225 Difference]: With dead ends: 4224 [2021-11-07 01:10:03,586 INFO L226 Difference]: Without dead ends: 2162 [2021-11-07 01:10:03,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:10:03,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2021-11-07 01:10:03,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2156. [2021-11-07 01:10:03,711 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 01:10:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2695 transitions. [2021-11-07 01:10:03,720 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2695 transitions. Word has length 44 [2021-11-07 01:10:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:03,720 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2695 transitions. [2021-11-07 01:10:03,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2695 transitions. [2021-11-07 01:10:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:10:03,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:03,725 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:03,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:03,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:03,940 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 01:10:03,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash -317348363, now seen corresponding path program 1 times [2021-11-07 01:10:03,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:03,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245275295] [2021-11-07 01:10:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:03,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:03,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:03,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:03,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:10:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:04,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:10:04,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:04,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:05,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:05,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245275295] [2021-11-07 01:10:05,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245275295] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:05,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:05,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:10:05,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107909016] [2021-11-07 01:10:05,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:10:05,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:05,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:10:05,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:05,062 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 01:10:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:05,250 INFO L93 Difference]: Finished difference Result 4220 states and 5270 transitions. [2021-11-07 01:10:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:10:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:05,264 INFO L225 Difference]: With dead ends: 4220 [2021-11-07 01:10:05,264 INFO L226 Difference]: Without dead ends: 2155 [2021-11-07 01:10:05,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:05,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2021-11-07 01:10:05,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2150. [2021-11-07 01:10:05,319 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 01:10:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2685 transitions. [2021-11-07 01:10:05,327 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2685 transitions. Word has length 44 [2021-11-07 01:10:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:05,329 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 2685 transitions. [2021-11-07 01:10:05,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:05,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2685 transitions. [2021-11-07 01:10:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:10:05,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:05,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:05,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:05,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:05,561 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 01:10:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash -575513801, now seen corresponding path program 1 times [2021-11-07 01:10:05,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:05,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738998896] [2021-11-07 01:10:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:05,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:05,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:05,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:05,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:10:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:05,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:05,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:05,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:10:05,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:10:05,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:10:06,045 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:10:06,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:10:06,140 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:10:06,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:10:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:06,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:06,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:06,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738998896] [2021-11-07 01:10:06,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738998896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:06,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:06,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:10:06,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743073068] [2021-11-07 01:10:06,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:10:06,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:06,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:10:06,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:10:06,507 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 01:10:15,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:15,052 INFO L93 Difference]: Finished difference Result 8367 states and 10436 transitions. [2021-11-07 01:10:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:10:15,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:10:15,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:15,089 INFO L225 Difference]: With dead ends: 8367 [2021-11-07 01:10:15,089 INFO L226 Difference]: Without dead ends: 6307 [2021-11-07 01:10:15,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:10:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2021-11-07 01:10:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 2152. [2021-11-07 01:10:15,184 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 01:10:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2687 transitions. [2021-11-07 01:10:15,193 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2687 transitions. Word has length 44 [2021-11-07 01:10:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:15,193 INFO L470 AbstractCegarLoop]: Abstraction has 2152 states and 2687 transitions. [2021-11-07 01:10:15,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2687 transitions. [2021-11-07 01:10:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:10:15,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:15,198 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 01:10:15,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:15,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:15,421 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 01:10:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1988614245, now seen corresponding path program 1 times [2021-11-07 01:10:15,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:15,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117504820] [2021-11-07 01:10:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:15,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:15,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:15,430 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:15,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:10:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:15,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:15,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:16,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:16,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:16,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117504820] [2021-11-07 01:10:16,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117504820] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:16,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:16,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:10:16,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773446195] [2021-11-07 01:10:16,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:10:16,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:10:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:10:16,481 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 01:10:16,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:16,656 INFO L93 Difference]: Finished difference Result 4309 states and 5382 transitions. [2021-11-07 01:10:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:16,656 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 01:10:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:16,669 INFO L225 Difference]: With dead ends: 4309 [2021-11-07 01:10:16,669 INFO L226 Difference]: Without dead ends: 2161 [2021-11-07 01:10:16,675 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 01:10:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-11-07 01:10:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2155. [2021-11-07 01:10:16,723 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 01:10:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2682 transitions. [2021-11-07 01:10:16,730 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2682 transitions. Word has length 96 [2021-11-07 01:10:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:16,732 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2682 transitions. [2021-11-07 01:10:16,732 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 01:10:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2682 transitions. [2021-11-07 01:10:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:10:16,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:16,735 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 01:10:16,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:16,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:16,951 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 01:10:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash -312724623, now seen corresponding path program 1 times [2021-11-07 01:10:16,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:16,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271528399] [2021-11-07 01:10:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:16,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:16,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:16,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:10:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:17,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:17,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:17,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:18,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:18,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271528399] [2021-11-07 01:10:18,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271528399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:18,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:18,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:10:18,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887034719] [2021-11-07 01:10:18,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:10:18,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:10:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:10:18,508 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 01:10:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:19,429 INFO L93 Difference]: Finished difference Result 6390 states and 7950 transitions. [2021-11-07 01:10:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:10:19,429 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 01:10:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:19,455 INFO L225 Difference]: With dead ends: 6390 [2021-11-07 01:10:19,455 INFO L226 Difference]: Without dead ends: 4239 [2021-11-07 01:10:19,460 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 01:10:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-07 01:10:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3237. [2021-11-07 01:10:19,548 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 01:10:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4769 transitions. [2021-11-07 01:10:19,559 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4769 transitions. Word has length 96 [2021-11-07 01:10:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:19,560 INFO L470 AbstractCegarLoop]: Abstraction has 3237 states and 4769 transitions. [2021-11-07 01:10:19,560 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 01:10:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4769 transitions. [2021-11-07 01:10:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:10:19,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:19,568 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 01:10:19,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:19,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:19,784 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 01:10:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1091132224, now seen corresponding path program 1 times [2021-11-07 01:10:19,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:19,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957387319] [2021-11-07 01:10:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:19,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:19,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:19,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:10:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:20,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:20,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:20,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:21,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:21,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957387319] [2021-11-07 01:10:21,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957387319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:21,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:21,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:10:21,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458501027] [2021-11-07 01:10:21,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:10:21,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:21,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:10:21,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:21,053 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 01:10:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:21,176 INFO L93 Difference]: Finished difference Result 6432 states and 9495 transitions. [2021-11-07 01:10:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:21,177 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 01:10:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:21,200 INFO L225 Difference]: With dead ends: 6432 [2021-11-07 01:10:21,200 INFO L226 Difference]: Without dead ends: 3240 [2021-11-07 01:10:21,206 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 01:10:21,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-11-07 01:10:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 3240. [2021-11-07 01:10:21,283 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 01:10:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4772 transitions. [2021-11-07 01:10:21,293 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4772 transitions. Word has length 103 [2021-11-07 01:10:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:21,295 INFO L470 AbstractCegarLoop]: Abstraction has 3240 states and 4772 transitions. [2021-11-07 01:10:21,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4772 transitions. [2021-11-07 01:10:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:10:21,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:21,299 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:21,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:21,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:21,514 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 01:10:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -785976308, now seen corresponding path program 1 times [2021-11-07 01:10:21,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:21,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134816331] [2021-11-07 01:10:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:21,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:21,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:21,517 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:21,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:10:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:22,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:22,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:22,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:22,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:22,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134816331] [2021-11-07 01:10:22,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134816331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:22,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1023083108] [2021-11-07 01:10:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:22,886 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:22,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:22,891 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:22,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:10:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:23,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:23,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:10:24,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:10:24,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1023083108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:24,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:10:24,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:10:24,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972082056] [2021-11-07 01:10:24,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:10:24,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:24,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:10:24,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:10:24,631 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 01:10:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:28,733 INFO L93 Difference]: Finished difference Result 5394 states and 7453 transitions. [2021-11-07 01:10:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:28,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 01:10:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:28,747 INFO L225 Difference]: With dead ends: 5394 [2021-11-07 01:10:28,748 INFO L226 Difference]: Without dead ends: 2199 [2021-11-07 01:10:28,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:10:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-07 01:10:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2199. [2021-11-07 01:10:28,799 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 01:10:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 2728 transitions. [2021-11-07 01:10:28,804 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 2728 transitions. Word has length 106 [2021-11-07 01:10:28,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:28,804 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 2728 transitions. [2021-11-07 01:10:28,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:28,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 2728 transitions. [2021-11-07 01:10:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:10:28,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:28,806 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:28,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:29,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:29,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:29,217 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 01:10:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash 530701390, now seen corresponding path program 1 times [2021-11-07 01:10:29,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:29,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540176028] [2021-11-07 01:10:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:29,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:29,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:29,220 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:29,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:10:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:29,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:29,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:30,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:30,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:30,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540176028] [2021-11-07 01:10:30,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540176028] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:30,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1192171699] [2021-11-07 01:10:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:30,728 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:30,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:30,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:10:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:31,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:31,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:31,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:32,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1192171699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:32,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708630254] [2021-11-07 01:10:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:32,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:10:32,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:10:32,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:10:32,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:10:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:33,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:10:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:33,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:33,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708630254] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:33,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:10:33,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:10:33,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422214875] [2021-11-07 01:10:33,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:10:33,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:33,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:10:33,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:10:33,854 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 01:10:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:34,220 INFO L93 Difference]: Finished difference Result 4356 states and 5417 transitions. [2021-11-07 01:10:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:10:34,221 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 01:10:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:34,232 INFO L225 Difference]: With dead ends: 4356 [2021-11-07 01:10:34,232 INFO L226 Difference]: Without dead ends: 2207 [2021-11-07 01:10:34,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:10:34,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-07 01:10:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-07 01:10:34,295 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 01:10:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2736 transitions. [2021-11-07 01:10:34,308 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2736 transitions. Word has length 113 [2021-11-07 01:10:34,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:34,309 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2736 transitions. [2021-11-07 01:10:34,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:34,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2736 transitions. [2021-11-07 01:10:34,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:10:34,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:34,312 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:34,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:34,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:34,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:34,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:10:34,916 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 01:10:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1097119218, now seen corresponding path program 2 times [2021-11-07 01:10:34,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:34,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051657489] [2021-11-07 01:10:34,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:10:34,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:34,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:34,918 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:34,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:10:35,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:10:35,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:10:35,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:10:35,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:10:36,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:10:36,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:36,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051657489] [2021-11-07 01:10:36,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051657489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:36,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1281872667] [2021-11-07 01:10:36,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:10:36,852 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:36,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:36,860 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:36,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:10:38,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:10:38,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:10:38,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:10:38,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:10:38,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:10:38,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1281872667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:38,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280472395] [2021-11-07 01:10:38,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:10:38,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:10:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:10:38,812 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:10:38,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:10:40,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:10:40,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:10:40,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:10:40,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:10:40,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:10:41,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280472395] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:41,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:10:41,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:10:41,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630817301] [2021-11-07 01:10:41,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:10:41,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:10:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:10:41,387 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 01:10:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:45,748 INFO L93 Difference]: Finished difference Result 6523 states and 8120 transitions. [2021-11-07 01:10:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:10:45,750 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-07 01:10:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:45,759 INFO L225 Difference]: With dead ends: 6523 [2021-11-07 01:10:45,759 INFO L226 Difference]: Without dead ends: 4370 [2021-11-07 01:10:45,762 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 01:10:45,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-11-07 01:10:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2229. [2021-11-07 01:10:45,822 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 01:10:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2759 transitions. [2021-11-07 01:10:45,826 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2759 transitions. Word has length 121 [2021-11-07 01:10:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:45,827 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 2759 transitions. [2021-11-07 01:10:45,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2759 transitions. [2021-11-07 01:10:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 01:10:45,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:45,829 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:45,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-07 01:10:46,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:46,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:46,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:46,446 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 01:10:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:46,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1558493810, now seen corresponding path program 3 times [2021-11-07 01:10:46,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:46,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148477576] [2021-11-07 01:10:46,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:10:46,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:46,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:46,448 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:46,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:10:53,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:10:53,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:10:53,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:10:53,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:10:53,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:10:55,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:55,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148477576] [2021-11-07 01:10:55,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148477576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:55,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1114271744] [2021-11-07 01:10:55,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:10:55,706 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:55,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:55,708 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:55,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:11:52,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:11:52,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:11:52,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:11:52,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:11:53,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:11:53,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1114271744] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:11:53,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408131672] [2021-11-07 01:11:53,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:11:53,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:11:53,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:11:53,636 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:11:53,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49c1f906-e3ee-4867-b70e-548e3f9dcb89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process