./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/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_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/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 64bit --witnessprinter.graph.data.programhash 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:56:52,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:56:52,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:56:52,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:56:52,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:56:52,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:56:52,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:56:52,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:56:52,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:56:52,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:56:52,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:56:52,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:56:52,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:56:52,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:56:52,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:56:52,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:56:52,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:56:52,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:56:52,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:56:52,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:56:52,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:56:52,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:56:52,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:56:52,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:56:52,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:56:52,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:56:52,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:56:52,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:56:52,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:56:52,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:56:52,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:56:52,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:56:52,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:56:52,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:56:52,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:56:52,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:56:52,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:56:52,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:56:52,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:56:52,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:56:52,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:56:52,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:56:52,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:56:52,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:56:52,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:56:52,183 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:56:52,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:56:52,183 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:56:52,183 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:56:52,184 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:56:52,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:56:52,184 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:56:52,184 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:56:52,185 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:56:52,185 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:56:52,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:56:52,185 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:56:52,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:56:52,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:56:52,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:56:52,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:56:52,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:56:52,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:56:52,187 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:56:52,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:56:52,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:56:52,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:56:52,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:56:52,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:56:52,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:56:52,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:56:52,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:56:52,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:56:52,190 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:56:52,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:56:52,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:56:52,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:56:52,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:56:52,191 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_53adbcff-08f7-4303-a826-d36aa6c35cb5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 [2021-11-07 00:56:52,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:56:52,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:56:52,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:56:52,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:56:52,449 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:56:52,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:56:52,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data/a66203add/9c1229e4eca443068ec64c559bd3a2ca/FLAG9e3958273 [2021-11-07 00:56:53,498 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:56:53,499 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:56:53,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data/a66203add/9c1229e4eca443068ec64c559bd3a2ca/FLAG9e3958273 [2021-11-07 00:56:53,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data/a66203add/9c1229e4eca443068ec64c559bd3a2ca [2021-11-07 00:56:53,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:56:53,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:56:53,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:56:53,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:56:53,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:56:53,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:53" (1/1) ... [2021-11-07 00:56:53,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2548a6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53, skipping insertion in model container [2021-11-07 00:56:53,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:53" (1/1) ... [2021-11-07 00:56:53,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:56:54,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:56:55,386 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,391 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,450 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,457 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,473 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,480 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,696 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,773 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,804 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,818 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,824 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,829 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,836 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,849 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,874 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,880 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,890 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,894 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,899 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,935 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,936 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,965 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,967 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,967 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,968 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:55,990 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_53adbcff-08f7-4303-a826-d36aa6c35cb5/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2021-11-07 00:56:56,004 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:56:56,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:56:56,070 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 00:56:56,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3234652f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:56, skipping insertion in model container [2021-11-07 00:56:56,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:56:56,072 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:56:56,074 INFO L168 Benchmark]: Toolchain (without parser) took 2181.18 ms. Allocated memory is still 142.6 MB. Free memory was 98.1 MB in the beginning and 77.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:56,075 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:56:56,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2175.29 ms. Allocated memory is still 142.6 MB. Free memory was 97.7 MB in the beginning and 77.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:56,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2175.29 ms. Allocated memory is still 142.6 MB. Free memory was 97.7 MB in the beginning and 77.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4461]: 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_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/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_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/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 64bit --witnessprinter.graph.data.programhash 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:56:58,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:56:58,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:56:58,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:56:58,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:56:58,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:56:58,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:56:58,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:56:58,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:56:58,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:56:58,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:56:58,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:56:58,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:56:58,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:56:58,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:56:58,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:56:58,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:56:58,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:56:58,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:56:58,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:56:58,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:56:58,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:56:58,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:56:58,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:56:58,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:56:58,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:56:58,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:56:58,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:56:58,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:56:58,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:56:58,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:56:58,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:56:58,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:56:58,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:56:58,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:56:58,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:56:58,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:56:58,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:56:58,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:56:58,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:56:58,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:56:58,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:56:58,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:56:58,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:56:58,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:56:58,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:56:58,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:56:58,510 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:56:58,511 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:56:58,511 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:56:58,511 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:56:58,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:56:58,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:56:58,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:56:58,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:56:58,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:56:58,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:56:58,514 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:56:58,514 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:56:58,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:56:58,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:56:58,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:56:58,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:56:58,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:56:58,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:56:58,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:56:58,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:56:58,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:56:58,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:56:58,517 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:56:58,517 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:56:58,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:56:58,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:56:58,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:56:58,518 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_53adbcff-08f7-4303-a826-d36aa6c35cb5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 [2021-11-07 00:56:58,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:56:58,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:56:58,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:56:58,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:56:58,978 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:56:58,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:56:59,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data/9d9b5ef47/90d84e1f969340368a14975b2ea29e4c/FLAG8f6f608f1 [2021-11-07 00:57:00,014 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:57:00,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:57:00,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data/9d9b5ef47/90d84e1f969340368a14975b2ea29e4c/FLAG8f6f608f1 [2021-11-07 00:57:00,419 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/data/9d9b5ef47/90d84e1f969340368a14975b2ea29e4c [2021-11-07 00:57:00,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:57:00,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:57:00,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:00,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:57:00,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:57:00,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:00" (1/1) ... [2021-11-07 00:57:00,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576f7267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:00, skipping insertion in model container [2021-11-07 00:57:00,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:00" (1/1) ... [2021-11-07 00:57:00,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:57:00,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:02,692 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_53adbcff-08f7-4303-a826-d36aa6c35cb5/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2021-11-07 00:57:02,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:02,795 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:57:02,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:03,271 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_53adbcff-08f7-4303-a826-d36aa6c35cb5/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2021-11-07 00:57:03,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:03,312 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:57:03,645 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_53adbcff-08f7-4303-a826-d36aa6c35cb5/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2021-11-07 00:57:03,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:03,799 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:57:03,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03 WrapperNode [2021-11-07 00:57:03,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:03,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:03,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:57:03,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:57:03,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:03,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:05,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:05,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:57:05,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:57:05,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:57:05,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:05,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:06,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:06,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:07,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:07,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:08,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:08,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:57:08,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:57:08,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:57:08,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:57:08,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (1/1) ... [2021-11-07 00:57:08,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:08,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:08,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:57:08,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:57:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:57:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:57:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:57:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:57:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:57:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:57:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-07 00:57:08,503 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-07 00:57:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 00:57:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 00:57:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-07 00:57:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-07 00:57:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-07 00:57:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-07 00:57:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_26 [2021-11-07 00:57:08,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_26 [2021-11-07 00:57:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:57:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-11-07 00:57:08,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-11-07 00:57:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:57:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-07 00:57:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-07 00:57:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-07 00:57:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-07 00:57:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2021-11-07 00:57:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2021-11-07 00:57:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:57:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:57:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:57:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:57:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:57:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:57:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 00:57:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:57:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:57:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:57:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-07 00:57:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-07 00:57:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-07 00:57:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-07 00:57:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-07 00:57:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-07 00:57:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-07 00:57:08,511 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-07 00:57:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-07 00:57:08,511 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-07 00:57:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:57:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:57:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:57:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:57:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-11-07 00:57:08,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-11-07 00:57:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:57:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:57:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:57:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 00:57:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 00:57:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:57:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 00:57:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 00:57:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:57:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-07 00:57:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-07 00:57:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-07 00:57:08,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-07 00:57:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-07 00:57:08,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-07 00:57:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:57:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 00:57:08,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:57:08,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:00:35,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:00:35,375 INFO L299 CfgBuilder]: Removed 14858 assume(true) statements. [2021-11-07 01:00:35,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:00:35 BoogieIcfgContainer [2021-11-07 01:00:35,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:00:35,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:00:35,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:00:35,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:00:35,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:00" (1/3) ... [2021-11-07 01:00:35,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd1a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:00:35, skipping insertion in model container [2021-11-07 01:00:35,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:03" (2/3) ... [2021-11-07 01:00:35,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd1a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:00:35, skipping insertion in model container [2021-11-07 01:00:35,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:00:35" (3/3) ... [2021-11-07 01:00:35,398 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:00:35,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:00:35,404 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:00:35,510 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:00:35,517 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 01:00:35,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:00:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 11174 states, 11109 states have (on average 1.4384733099288864) internal successors, (15980), 11120 states have internal predecessors, (15980), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 01:00:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:00:35,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:35,727 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:35,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:00:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1380952615, now seen corresponding path program 1 times [2021-11-07 01:00:35,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:35,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343185065] [2021-11-07 01:00:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:35,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:35,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:35,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:36,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:00:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:37,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:00:37,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:38,026 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 01:00:38,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:38,438 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 01:00:38,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:38,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343185065] [2021-11-07 01:00:38,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343185065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:38,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:38,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:00:38,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96884495] [2021-11-07 01:00:38,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:00:38,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:00:38,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:00:38,485 INFO L87 Difference]: Start difference. First operand has 11174 states, 11109 states have (on average 1.4384733099288864) internal successors, (15980), 11120 states have internal predecessors, (15980), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 01:00:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:38,998 INFO L93 Difference]: Finished difference Result 22344 states and 32147 transitions. [2021-11-07 01:00:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:00:38,999 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-07 01:00:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:39,113 INFO L225 Difference]: With dead ends: 22344 [2021-11-07 01:00:39,114 INFO L226 Difference]: Without dead ends: 11157 [2021-11-07 01:00:39,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 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 01:00:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11157 states. [2021-11-07 01:00:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11157 to 11157. [2021-11-07 01:00:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11157 states, 11093 states have (on average 1.4354097178400793) internal successors, (15923), 11103 states have internal predecessors, (15923), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 01:00:39,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11157 states to 11157 states and 16003 transitions. [2021-11-07 01:00:39,770 INFO L78 Accepts]: Start accepts. Automaton has 11157 states and 16003 transitions. Word has length 48 [2021-11-07 01:00:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:39,771 INFO L470 AbstractCegarLoop]: Abstraction has 11157 states and 16003 transitions. [2021-11-07 01:00:39,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 01:00:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 11157 states and 16003 transitions. [2021-11-07 01:00:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:00:39,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:39,776 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:39,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:00:40,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:40,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:00:40,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:40,001 INFO L85 PathProgramCache]: Analyzing trace with hash -136206113, now seen corresponding path program 1 times [2021-11-07 01:00:40,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:40,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639131633] [2021-11-07 01:00:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:40,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:40,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:40,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:40,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:00:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:41,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:00:41,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:41,884 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 01:00:41,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:42,237 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 01:00:42,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:42,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639131633] [2021-11-07 01:00:42,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639131633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:42,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:42,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:00:42,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84747912] [2021-11-07 01:00:42,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:00:42,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:00:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:42,242 INFO L87 Difference]: Start difference. First operand 11157 states and 16003 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:00:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:42,934 INFO L93 Difference]: Finished difference Result 22298 states and 31993 transitions. [2021-11-07 01:00:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:00:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 48 [2021-11-07 01:00:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:43,003 INFO L225 Difference]: With dead ends: 22298 [2021-11-07 01:00:43,003 INFO L226 Difference]: Without dead ends: 11161 [2021-11-07 01:00:43,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 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 01:00:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11161 states. [2021-11-07 01:00:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11161 to 11161. [2021-11-07 01:00:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11161 states, 11097 states have (on average 1.4352527710191945) internal successors, (15927), 11107 states have internal predecessors, (15927), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 01:00:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11161 states to 11161 states and 16007 transitions. [2021-11-07 01:00:43,360 INFO L78 Accepts]: Start accepts. Automaton has 11161 states and 16007 transitions. Word has length 48 [2021-11-07 01:00:43,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:43,360 INFO L470 AbstractCegarLoop]: Abstraction has 11161 states and 16007 transitions. [2021-11-07 01:00:43,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:00:43,361 INFO L276 IsEmpty]: Start isEmpty. Operand 11161 states and 16007 transitions. [2021-11-07 01:00:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:00:43,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:43,367 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] [2021-11-07 01:00:43,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:43,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:43,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:00:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash 22472991, now seen corresponding path program 1 times [2021-11-07 01:00:43,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:43,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057221781] [2021-11-07 01:00:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:43,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:43,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:43,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:43,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:00:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:45,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:00:45,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:00:45,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:00:46,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:46,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057221781] [2021-11-07 01:00:46,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057221781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:46,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [336833932] [2021-11-07 01:00:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:46,773 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:00:46,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:00:46,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:00:46,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:00:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:48,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:00:48,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:00:49,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:00:50,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [336833932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:50,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:00:50,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:00:50,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164436654] [2021-11-07 01:00:50,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:00:50,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:00:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:00:50,129 INFO L87 Difference]: Start difference. First operand 11161 states and 16007 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:01:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:06,039 INFO L93 Difference]: Finished difference Result 33408 states and 48016 transitions. [2021-11-07 01:01:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:01:06,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 01:01:06,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:06,135 INFO L225 Difference]: With dead ends: 33408 [2021-11-07 01:01:06,136 INFO L226 Difference]: Without dead ends: 22279 [2021-11-07 01:01:06,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22279 states. [2021-11-07 01:01:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22279 to 22279. [2021-11-07 01:01:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22279 states, 22155 states have (on average 1.4059128864816068) internal successors, (31148), 22172 states have internal predecessors, (31148), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (112), 74 states have call predecessors, (112), 80 states have call successors, (112) [2021-11-07 01:01:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22279 states to 22279 states and 31340 transitions. [2021-11-07 01:01:07,006 INFO L78 Accepts]: Start accepts. Automaton has 22279 states and 31340 transitions. Word has length 52 [2021-11-07 01:01:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:07,009 INFO L470 AbstractCegarLoop]: Abstraction has 22279 states and 31340 transitions. [2021-11-07 01:01:07,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:01:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 22279 states and 31340 transitions. [2021-11-07 01:01:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 01:01:07,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:07,014 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] [2021-11-07 01:01:07,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:07,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:07,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:07,437 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:01:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:07,438 INFO L85 PathProgramCache]: Analyzing trace with hash 696710320, now seen corresponding path program 1 times [2021-11-07 01:01:07,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:07,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599337255] [2021-11-07 01:01:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:07,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:07,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:07,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:07,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:01:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:08,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:01:08,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:01:09,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:01:10,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:10,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599337255] [2021-11-07 01:01:10,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599337255] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:10,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [843971553] [2021-11-07 01:01:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:10,207 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:01:10,209 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:01:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:01:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:11,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:11,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:12,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:13,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [843971553] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:13,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:01:13,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:01:13,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856087554] [2021-11-07 01:01:13,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:01:13,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:01:13,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:13,099 INFO L87 Difference]: Start difference. First operand 22279 states and 31340 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:01:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:21,202 INFO L93 Difference]: Finished difference Result 66455 states and 93636 transitions. [2021-11-07 01:01:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:01:21,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 53 [2021-11-07 01:01:21,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:21,365 INFO L225 Difference]: With dead ends: 66455 [2021-11-07 01:01:21,365 INFO L226 Difference]: Without dead ends: 44208 [2021-11-07 01:01:21,420 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44208 states. [2021-11-07 01:01:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44208 to 44190. [2021-11-07 01:01:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44190 states, 43946 states have (on average 1.3916624948800802) internal successors, (61158), 43977 states have internal predecessors, (61158), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 01:01:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44190 states to 44190 states and 61542 transitions. [2021-11-07 01:01:22,835 INFO L78 Accepts]: Start accepts. Automaton has 44190 states and 61542 transitions. Word has length 53 [2021-11-07 01:01:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:22,835 INFO L470 AbstractCegarLoop]: Abstraction has 44190 states and 61542 transitions. [2021-11-07 01:01:22,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:01:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 44190 states and 61542 transitions. [2021-11-07 01:01:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:01:22,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:22,840 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] [2021-11-07 01:01:22,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:23,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:23,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:01:23,272 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:01:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:23,273 INFO L85 PathProgramCache]: Analyzing trace with hash 123231049, now seen corresponding path program 1 times [2021-11-07 01:01:23,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:23,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485564799] [2021-11-07 01:01:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:23,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:23,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:23,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:23,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:01:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:24,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:01:24,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:01:25,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:01:26,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:26,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485564799] [2021-11-07 01:01:26,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485564799] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:26,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1758586181] [2021-11-07 01:01:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:26,223 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:26,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:01:26,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:01:26,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:01:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:27,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:27,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:28,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:29,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1758586181] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:29,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:01:29,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:01:29,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923928944] [2021-11-07 01:01:29,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:01:29,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:01:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:29,283 INFO L87 Difference]: Start difference. First operand 44190 states and 61542 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:30,104 INFO L93 Difference]: Finished difference Result 44190 states and 61542 transitions. [2021-11-07 01:01:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:01:30,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 01:01:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:30,246 INFO L225 Difference]: With dead ends: 44190 [2021-11-07 01:01:30,246 INFO L226 Difference]: Without dead ends: 44188 [2021-11-07 01:01:30,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44188 states. [2021-11-07 01:01:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44188 to 44188. [2021-11-07 01:01:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44188 states, 43945 states have (on average 1.3916486517237456) internal successors, (61156), 43975 states have internal predecessors, (61156), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 01:01:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44188 states to 44188 states and 61540 transitions. [2021-11-07 01:01:31,821 INFO L78 Accepts]: Start accepts. Automaton has 44188 states and 61540 transitions. Word has length 54 [2021-11-07 01:01:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:31,826 INFO L470 AbstractCegarLoop]: Abstraction has 44188 states and 61540 transitions. [2021-11-07 01:01:31,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 44188 states and 61540 transitions. [2021-11-07 01:01:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:01:31,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:31,831 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] [2021-11-07 01:01:31,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:32,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:32,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:32,248 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:01:32,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:32,248 INFO L85 PathProgramCache]: Analyzing trace with hash -474757158, now seen corresponding path program 1 times [2021-11-07 01:01:32,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:32,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990876549] [2021-11-07 01:01:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:32,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:32,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:32,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:32,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:01:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:34,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:01:34,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:01:34,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:01:35,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:35,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990876549] [2021-11-07 01:01:35,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990876549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:35,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [576414398] [2021-11-07 01:01:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:35,510 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:35,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:01:35,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:01:35,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:01:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:36,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:36,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:37,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:38,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [576414398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:38,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:01:38,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:01:38,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361363953] [2021-11-07 01:01:38,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:01:38,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:38,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:01:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:38,689 INFO L87 Difference]: Start difference. First operand 44188 states and 61540 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:01:39,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:39,541 INFO L93 Difference]: Finished difference Result 44188 states and 61540 transitions. [2021-11-07 01:01:39,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:01:39,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 55 [2021-11-07 01:01:39,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:39,655 INFO L225 Difference]: With dead ends: 44188 [2021-11-07 01:01:39,656 INFO L226 Difference]: Without dead ends: 38192 [2021-11-07 01:01:39,672 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:39,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38192 states. [2021-11-07 01:01:40,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38192 to 38192. [2021-11-07 01:01:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38192 states, 37950 states have (on average 1.39965744400527) internal successors, (53117), 37979 states have internal predecessors, (53117), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 01:01:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 53501 transitions. [2021-11-07 01:01:41,026 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 53501 transitions. Word has length 55 [2021-11-07 01:01:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:41,027 INFO L470 AbstractCegarLoop]: Abstraction has 38192 states and 53501 transitions. [2021-11-07 01:01:41,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:01:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 53501 transitions. [2021-11-07 01:01:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:01:41,045 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:41,046 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:41,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:41,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:41,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:41,460 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:01:41,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash 148102191, now seen corresponding path program 1 times [2021-11-07 01:01:41,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:41,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550521790] [2021-11-07 01:01:41,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:41,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:41,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:41,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:41,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:01:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:43,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:01:43,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:01:44,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:01:45,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:45,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550521790] [2021-11-07 01:01:45,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550521790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:45,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2140613161] [2021-11-07 01:01:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:45,148 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:45,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:01:45,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:01:45,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:01:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:46,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:46,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:47,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:01:47,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2140613161] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:47,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:01:47,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:01:47,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553607145] [2021-11-07 01:01:47,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:01:47,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:01:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:47,936 INFO L87 Difference]: Start difference. First operand 38192 states and 53501 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 01:01:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:50,352 INFO L93 Difference]: Finished difference Result 91895 states and 128738 transitions. [2021-11-07 01:01:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:01:50,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 01:01:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:50,537 INFO L225 Difference]: With dead ends: 91895 [2021-11-07 01:01:50,537 INFO L226 Difference]: Without dead ends: 53735 [2021-11-07 01:01:50,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:01:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53735 states. [2021-11-07 01:01:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53735 to 53720. [2021-11-07 01:01:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53720 states, 53238 states have (on average 1.3990946316540818) internal successors, (74485), 53295 states have internal predecessors, (74485), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (448), 296 states have call predecessors, (448), 320 states have call successors, (448) [2021-11-07 01:01:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53720 states to 53720 states and 75253 transitions. [2021-11-07 01:01:52,978 INFO L78 Accepts]: Start accepts. Automaton has 53720 states and 75253 transitions. Word has length 80 [2021-11-07 01:01:52,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:52,979 INFO L470 AbstractCegarLoop]: Abstraction has 53720 states and 75253 transitions. [2021-11-07 01:01:52,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 01:01:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 53720 states and 75253 transitions. [2021-11-07 01:01:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:01:53,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:53,022 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:53,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:53,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 01:01:53,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:53,440 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:01:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash -164031871, now seen corresponding path program 1 times [2021-11-07 01:01:53,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:53,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28229667] [2021-11-07 01:01:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:53,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:53,443 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:53,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:01:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:55,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:01:55,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:01:56,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:01:57,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:57,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28229667] [2021-11-07 01:01:57,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28229667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:57,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [553920469] [2021-11-07 01:01:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:57,765 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:01:57,766 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:01:57,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:01:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:59,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:59,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:02:00,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:02:00,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [553920469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:00,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:02:00,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:02:00,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907129509] [2021-11-07 01:02:00,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:02:00,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:02:00,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:02:00,638 INFO L87 Difference]: Start difference. First operand 53720 states and 75253 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 01:02:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:04,550 INFO L93 Difference]: Finished difference Result 107424 states and 150493 transitions. [2021-11-07 01:02:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:02:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 107 [2021-11-07 01:02:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:04,697 INFO L225 Difference]: With dead ends: 107424 [2021-11-07 01:02:04,697 INFO L226 Difference]: Without dead ends: 53734 [2021-11-07 01:02:04,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:02:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53734 states. [2021-11-07 01:02:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53734 to 53723. [2021-11-07 01:02:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53723 states, 53241 states have (on average 1.399034578614226) internal successors, (74486), 53298 states have internal predecessors, (74486), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (448), 296 states have call predecessors, (448), 320 states have call successors, (448) [2021-11-07 01:02:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53723 states to 53723 states and 75254 transitions. [2021-11-07 01:02:06,509 INFO L78 Accepts]: Start accepts. Automaton has 53723 states and 75254 transitions. Word has length 107 [2021-11-07 01:02:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:06,509 INFO L470 AbstractCegarLoop]: Abstraction has 53723 states and 75254 transitions. [2021-11-07 01:02:06,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 01:02:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 53723 states and 75254 transitions. [2021-11-07 01:02:06,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 01:02:06,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:06,542 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:06,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:06,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 01:02:06,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:06,956 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:02:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash 40293448, now seen corresponding path program 1 times [2021-11-07 01:02:06,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:06,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901782092] [2021-11-07 01:02:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:06,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:06,959 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:06,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:02:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:09,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:09,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:02:10,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:02:11,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:11,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901782092] [2021-11-07 01:02:11,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901782092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:11,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [914546437] [2021-11-07 01:02:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:11,506 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:11,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:02:11,509 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:02:11,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:02:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:13,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:02:13,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:02:14,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:02:15,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [914546437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:15,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:02:15,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:02:15,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891906255] [2021-11-07 01:02:15,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:02:15,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:15,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:02:15,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:15,424 INFO L87 Difference]: Start difference. First operand 53723 states and 75254 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 01:02:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:20,657 INFO L93 Difference]: Finished difference Result 104866 states and 146884 transitions. [2021-11-07 01:02:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:02:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 111 [2021-11-07 01:02:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:20,824 INFO L225 Difference]: With dead ends: 104866 [2021-11-07 01:02:20,825 INFO L226 Difference]: Without dead ends: 51175 [2021-11-07 01:02:20,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51175 states. [2021-11-07 01:02:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51175 to 51175. [2021-11-07 01:02:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51175 states, 50453 states have (on average 1.3972211761441342) internal successors, (70494), 50538 states have internal predecessors, (70494), 480 states have call successors, (480), 240 states have call predecessors, (480), 240 states have return successors, (672), 444 states have call predecessors, (672), 480 states have call successors, (672) [2021-11-07 01:02:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51175 states to 51175 states and 71646 transitions. [2021-11-07 01:02:23,149 INFO L78 Accepts]: Start accepts. Automaton has 51175 states and 71646 transitions. Word has length 111 [2021-11-07 01:02:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:23,149 INFO L470 AbstractCegarLoop]: Abstraction has 51175 states and 71646 transitions. [2021-11-07 01:02:23,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 01:02:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 51175 states and 71646 transitions. [2021-11-07 01:02:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 01:02:23,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:23,214 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:23,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:23,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:23,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:23,616 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:02:23,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash 806318988, now seen corresponding path program 1 times [2021-11-07 01:02:23,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:23,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330578499] [2021-11-07 01:02:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:23,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:23,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:23,620 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:23,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:02:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:25,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:25,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:02:27,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:02:28,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:28,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330578499] [2021-11-07 01:02:28,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330578499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:28,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [838952763] [2021-11-07 01:02:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:28,390 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:02:28,391 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:02:28,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:02:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:30,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:02:30,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:02:32,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:02:33,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [838952763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:33,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:02:33,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5, 5] total 15 [2021-11-07 01:02:33,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002984675] [2021-11-07 01:02:33,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:02:33,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:02:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:02:33,796 INFO L87 Difference]: Start difference. First operand 51175 states and 71646 transitions. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 01:02:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:37,278 INFO L93 Difference]: Finished difference Result 81041 states and 114447 transitions. [2021-11-07 01:02:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:02:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 137 [2021-11-07 01:02:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:37,430 INFO L225 Difference]: With dead ends: 81041 [2021-11-07 01:02:37,430 INFO L226 Difference]: Without dead ends: 52471 [2021-11-07 01:02:37,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:02:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52471 states. [2021-11-07 01:02:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52471 to 51211. [2021-11-07 01:02:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51211 states, 50489 states have (on average 1.3969379468795182) internal successors, (70530), 50574 states have internal predecessors, (70530), 480 states have call successors, (480), 240 states have call predecessors, (480), 240 states have return successors, (672), 444 states have call predecessors, (672), 480 states have call successors, (672) [2021-11-07 01:02:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51211 states to 51211 states and 71682 transitions. [2021-11-07 01:02:39,768 INFO L78 Accepts]: Start accepts. Automaton has 51211 states and 71682 transitions. Word has length 137 [2021-11-07 01:02:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:39,768 INFO L470 AbstractCegarLoop]: Abstraction has 51211 states and 71682 transitions. [2021-11-07 01:02:39,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 01:02:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 51211 states and 71682 transitions. [2021-11-07 01:02:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 01:02:39,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:39,821 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:39,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:40,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-07 01:02:40,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:40,236 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:02:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:40,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1192460375, now seen corresponding path program 1 times [2021-11-07 01:02:40,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:40,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159368453] [2021-11-07 01:02:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:40,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:40,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:40,240 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:40,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:02:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:42,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:42,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:02:43,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:02:45,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:45,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159368453] [2021-11-07 01:02:45,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159368453] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:45,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1050331719] [2021-11-07 01:02:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:45,034 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:45,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:02:45,035 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:02:45,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:02:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:48,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:48,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:02:49,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:02:50,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1050331719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:50,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944702821] [2021-11-07 01:02:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:50,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:50,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:50,273 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:50,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 01:02:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:52,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:52,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:02:54,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:02:56,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944702821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:56,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:02:56,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-07 01:02:56,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515750525] [2021-11-07 01:02:56,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:02:56,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:02:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:02:56,022 INFO L87 Difference]: Start difference. First operand 51211 states and 71682 transitions. Second operand has 9 states, 9 states have (on average 24.0) internal successors, (216), 9 states have internal predecessors, (216), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 01:03:04,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:04,384 INFO L93 Difference]: Finished difference Result 102379 states and 143301 transitions. [2021-11-07 01:03:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:03:04,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 24.0) internal successors, (216), 9 states have internal predecessors, (216), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 142 [2021-11-07 01:03:04,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:04,503 INFO L225 Difference]: With dead ends: 102379 [2021-11-07 01:03:04,503 INFO L226 Difference]: Without dead ends: 51200 [2021-11-07 01:03:04,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:03:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51200 states. [2021-11-07 01:03:06,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51200 to 51187. [2021-11-07 01:03:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51187 states, 50477 states have (on average 1.3967945797095707) internal successors, (70506), 50562 states have internal predecessors, (70506), 468 states have call successors, (468), 240 states have call predecessors, (468), 240 states have return successors, (654), 432 states have call predecessors, (654), 468 states have call successors, (654) [2021-11-07 01:03:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51187 states to 51187 states and 71628 transitions. [2021-11-07 01:03:06,906 INFO L78 Accepts]: Start accepts. Automaton has 51187 states and 71628 transitions. Word has length 142 [2021-11-07 01:03:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:06,907 INFO L470 AbstractCegarLoop]: Abstraction has 51187 states and 71628 transitions. [2021-11-07 01:03:06,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.0) internal successors, (216), 9 states have internal predecessors, (216), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 01:03:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 51187 states and 71628 transitions. [2021-11-07 01:03:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 01:03:06,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:06,958 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:06,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:07,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-07 01:03:07,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-07 01:03:07,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:03:07,559 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:03:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:07,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1908692036, now seen corresponding path program 1 times [2021-11-07 01:03:07,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:03:07,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11143158] [2021-11-07 01:03:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:07,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:03:07,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:03:07,562 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:03:07,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:03:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:09,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:03:09,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:03:11,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:03:12,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:12,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11143158] [2021-11-07 01:03:12,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11143158] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:12,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [705551752] [2021-11-07 01:03:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:12,495 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:03:12,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:03:12,495 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:03:12,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:03:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:16,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:03:16,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:03:17,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:03:17,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [705551752] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:17,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179907949] [2021-11-07 01:03:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:17,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:17,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:17,881 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:17,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 01:03:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:20,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:03:20,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:03:21,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:03:23,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179907949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:23,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:03:23,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-07 01:03:23,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898184942] [2021-11-07 01:03:23,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:03:23,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:23,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:03:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:03:23,293 INFO L87 Difference]: Start difference. First operand 51187 states and 71628 transitions. Second operand has 9 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 01:03:31,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:31,916 INFO L93 Difference]: Finished difference Result 102331 states and 143193 transitions. [2021-11-07 01:03:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:03:31,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 140 [2021-11-07 01:03:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:32,036 INFO L225 Difference]: With dead ends: 102331 [2021-11-07 01:03:32,036 INFO L226 Difference]: Without dead ends: 51176 [2021-11-07 01:03:32,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:03:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51176 states. [2021-11-07 01:03:34,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51176 to 51163. [2021-11-07 01:03:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51163 states, 50465 states have (on average 1.3966511443574754) internal successors, (70482), 50550 states have internal predecessors, (70482), 456 states have call successors, (456), 240 states have call predecessors, (456), 240 states have return successors, (636), 420 states have call predecessors, (636), 456 states have call successors, (636) [2021-11-07 01:03:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51163 states to 51163 states and 71574 transitions. [2021-11-07 01:03:34,359 INFO L78 Accepts]: Start accepts. Automaton has 51163 states and 71574 transitions. Word has length 140 [2021-11-07 01:03:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:34,360 INFO L470 AbstractCegarLoop]: Abstraction has 51163 states and 71574 transitions. [2021-11-07 01:03:34,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 01:03:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 51163 states and 71574 transitions. [2021-11-07 01:03:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 01:03:34,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:34,401 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:34,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-07 01:03:34,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:34,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:35,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:03:35,002 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:03:35,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash 315317616, now seen corresponding path program 1 times [2021-11-07 01:03:35,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:03:35,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926702069] [2021-11-07 01:03:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:35,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:03:35,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:03:35,005 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:03:35,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 01:03:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:37,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:03:37,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:03:38,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:03:40,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:40,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926702069] [2021-11-07 01:03:40,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926702069] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:40,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1098504519] [2021-11-07 01:03:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:40,006 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:03:40,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:03:40,015 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:03:40,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-07 01:03:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:44,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:03:44,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:03:45,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:03:45,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1098504519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:45,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841856559] [2021-11-07 01:03:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:45,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:45,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:45,677 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:45,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 01:03:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:48,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:03:48,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:03:49,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:03:50,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841856559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:50,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:03:50,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-07 01:03:50,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11802796] [2021-11-07 01:03:50,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:03:50,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:50,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:03:50,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:03:50,851 INFO L87 Difference]: Start difference. First operand 51163 states and 71574 transitions. Second operand has 9 states, 9 states have (on average 23.333333333333332) internal successors, (210), 9 states have internal predecessors, (210), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 01:03:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:57,317 INFO L93 Difference]: Finished difference Result 102283 states and 143085 transitions. [2021-11-07 01:03:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:03:57,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 23.333333333333332) internal successors, (210), 9 states have internal predecessors, (210), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 139 [2021-11-07 01:03:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:57,433 INFO L225 Difference]: With dead ends: 102283 [2021-11-07 01:03:57,433 INFO L226 Difference]: Without dead ends: 51152 [2021-11-07 01:03:57,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:03:57,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51152 states. [2021-11-07 01:03:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51152 to 51139. [2021-11-07 01:03:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51139 states, 50453 states have (on average 1.3965076407745822) internal successors, (70458), 50538 states have internal predecessors, (70458), 444 states have call successors, (444), 240 states have call predecessors, (444), 240 states have return successors, (618), 408 states have call predecessors, (618), 444 states have call successors, (618) [2021-11-07 01:04:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51139 states to 51139 states and 71520 transitions. [2021-11-07 01:04:00,005 INFO L78 Accepts]: Start accepts. Automaton has 51139 states and 71520 transitions. Word has length 139 [2021-11-07 01:04:00,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:00,005 INFO L470 AbstractCegarLoop]: Abstraction has 51139 states and 71520 transitions. [2021-11-07 01:04:00,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.333333333333332) internal successors, (210), 9 states have internal predecessors, (210), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 01:04:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 51139 states and 71520 transitions. [2021-11-07 01:04:00,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 01:04:00,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:00,048 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:00,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:00,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:00,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:00,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:00,664 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:04:00,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash -201844035, now seen corresponding path program 1 times [2021-11-07 01:04:00,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:00,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984509281] [2021-11-07 01:04:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:00,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:00,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:00,668 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:00,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-07 01:04:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:03,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:03,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:04:04,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:04:05,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:05,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984509281] [2021-11-07 01:04:05,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984509281] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:05,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [276066725] [2021-11-07 01:04:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:05,729 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:05,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:04:05,735 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:04:05,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-07 01:04:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:10,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:10,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:04:11,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:04:11,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [276066725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:11,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205233994] [2021-11-07 01:04:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:11,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:04:11,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:04:11,673 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:04:11,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53adbcff-08f7-4303-a826-d36aa6c35cb5/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 01:04:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:14,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:04:14,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:04:16,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:04:18,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205233994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:18,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:04:18,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 9] imperfect sequences [5, 5, 5, 5] total 20 [2021-11-07 01:04:18,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291027887] [2021-11-07 01:04:18,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:04:18,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:04:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:04:18,412 INFO L87 Difference]: Start difference. First operand 51139 states and 71520 transitions. Second operand has 14 states, 14 states have (on average 15.285714285714286) internal successors, (214), 14 states have internal predecessors, (214), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 01:04:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:40,057 INFO L93 Difference]: Finished difference Result 174809 states and 244049 transitions. [2021-11-07 01:04:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:04:40,058 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.285714285714286) internal successors, (214), 14 states have internal predecessors, (214), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2021-11-07 01:04:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:40,324 INFO L225 Difference]: With dead ends: 174809 [2021-11-07 01:04:40,325 INFO L226 Difference]: Without dead ends: 123702 [2021-11-07 01:04:40,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:04:40,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123702 states.