./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/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 b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:08,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:08,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:08,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:08,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:08,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:08,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:08,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:08,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:08,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:08,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:08,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:08,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:08,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:08,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:08,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:08,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:08,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:08,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:08,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:08,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:08,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:08,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:08,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:08,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:08,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:08,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:08,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:08,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:08,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:08,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:08,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:08,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:08,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:08,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:08,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:08,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:08,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:08,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:08,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:08,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:08,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:12:08,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:08,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:08,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:08,450 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:08,450 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:08,451 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:08,451 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:12:08,451 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:08,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:08,460 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:12:08,461 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:12:08,462 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:08,463 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:12:08,463 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:12:08,463 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:12:08,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:08,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:12:08,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:08,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:08,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:08,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:08,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:08,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:08,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:08,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:08,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:08,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:08,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:08,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:08,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:08,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:08,472 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:12:08,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:12:08,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:08,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:08,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:08,474 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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2021-11-07 01:12:08,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:08,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:08,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:08,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:08,912 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:08,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 01:12:09,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data/64c2329df/dd94d295e97d4c558c4f307af84a8dfe/FLAGc55c8dc74 [2021-11-07 01:12:09,966 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:09,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 01:12:10,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data/64c2329df/dd94d295e97d4c558c4f307af84a8dfe/FLAGc55c8dc74 [2021-11-07 01:12:10,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data/64c2329df/dd94d295e97d4c558c4f307af84a8dfe [2021-11-07 01:12:10,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:10,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:10,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:10,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:10,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:10,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:10" (1/1) ... [2021-11-07 01:12:10,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f89d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:10, skipping insertion in model container [2021-11-07 01:12:10,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:10" (1/1) ... [2021-11-07 01:12:10,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:10,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:11,213 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-07 01:12:11,216 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-07 01:12:11,473 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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-07 01:12:11,792 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 01:12:11,794 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 01:12:11,861 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 01:12:11,900 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 01:12:11,905 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 01:12:11,911 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 01:12:11,952 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 01:12:11,955 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 01:12:11,957 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 01:12:11,964 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 01:12:11,967 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 01:12:11,970 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 01:12:12,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:12,139 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:12:12,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@485feebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:12, skipping insertion in model container [2021-11-07 01:12:12,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:12,141 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:12:12,144 INFO L168 Benchmark]: Toolchain (without parser) took 1723.05 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 58.1 MB in the beginning and 60.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:12,145 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:12:12,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1717.45 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 58.1 MB in the beginning and 60.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:12,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1717.45 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 58.1 MB in the beginning and 60.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3961]: 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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/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 b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:14,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:14,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:14,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:14,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:14,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:14,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:14,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:14,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:14,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:14,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:14,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:14,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:14,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:14,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:14,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:14,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:14,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:14,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:14,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:14,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:14,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:14,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:14,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:14,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:14,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:14,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:14,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:14,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:14,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:14,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:14,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:14,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:14,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:14,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:14,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:14,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:14,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:14,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:14,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:14,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:14,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:12:14,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:14,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:14,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:14,974 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:14,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:14,975 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:14,975 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:14,975 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:14,976 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:14,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:14,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:14,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:14,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:14,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:14,980 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:14,980 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:12:14,981 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:12:14,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:14,981 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:14,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:14,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:14,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:12:14,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:14,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:14,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:14,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:14,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:14,984 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:12:14,984 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:14,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:14,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:14,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:14,985 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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2021-11-07 01:12:15,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:15,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:15,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:15,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:15,478 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:15,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 01:12:15,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data/eba1fa496/78e6b2d9430744ca993710ec8cdcf487/FLAG4ab254eee [2021-11-07 01:12:16,562 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:16,563 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 01:12:16,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data/eba1fa496/78e6b2d9430744ca993710ec8cdcf487/FLAG4ab254eee [2021-11-07 01:12:16,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/data/eba1fa496/78e6b2d9430744ca993710ec8cdcf487 [2021-11-07 01:12:16,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:16,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:16,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:16,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:16,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:16,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:16" (1/1) ... [2021-11-07 01:12:16,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7c1006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:16, skipping insertion in model container [2021-11-07 01:12:16,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:16" (1/1) ... [2021-11-07 01:12:16,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:17,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:17,849 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-07 01:12:17,851 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-07 01:12:18,146 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-07 01:12:18,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:18,874 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:12:18,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:19,007 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-07 01:12:19,008 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-07 01:12:19,021 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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-07 01:12:19,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:19,267 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:12:19,415 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-07 01:12:19,416 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-07 01:12:19,424 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_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-07 01:12:19,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:19,689 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:12:19,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19 WrapperNode [2021-11-07 01:12:19,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:19,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:19,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:12:19,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:12:19,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:19,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:20,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:12:20,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:12:20,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:12:20,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:12:20,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:12:20,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:12:20,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:12:20,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (1/1) ... [2021-11-07 01:12:20,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:20,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:20,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:12:20,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:12:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:12:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:12:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:12:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:12:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:12:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:12:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:12:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:12:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:12:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:12:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:12:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:12:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:12:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:12:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:12:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:12:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:12:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:12:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:12:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:12:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:12:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:12:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:12:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:12:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:12:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:12:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:12:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:12:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:12:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:12:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:13:16,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:13:16,873 INFO L299 CfgBuilder]: Removed 1042 assume(true) statements. [2021-11-07 01:13:16,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:16 BoogieIcfgContainer [2021-11-07 01:13:16,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:13:16,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:13:16,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:13:16,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:13:16,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:12:16" (1/3) ... [2021-11-07 01:13:16,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bd7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:16, skipping insertion in model container [2021-11-07 01:13:16,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:19" (2/3) ... [2021-11-07 01:13:16,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bd7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:16, skipping insertion in model container [2021-11-07 01:13:16,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:16" (3/3) ... [2021-11-07 01:13:16,885 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 01:13:16,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:13:16,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:13:16,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:13:16,948 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 01:13:16,949 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:13:16,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 835 states, 828 states have (on average 1.3973429951690821) internal successors, (1157), 834 states have internal predecessors, (1157), 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 01:13:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:13:16,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:16,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:16,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1385985514, now seen corresponding path program 1 times [2021-11-07 01:13:17,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:17,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023026660] [2021-11-07 01:13:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:17,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:17,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:17,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:13:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:18,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:13:18,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:18,687 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 01:13:18,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:18,996 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 01:13:18,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:18,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023026660] [2021-11-07 01:13:18,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023026660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:18,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:18,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:13:19,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080162543] [2021-11-07 01:13:19,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:13:19,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:13:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:13:19,023 INFO L87 Difference]: Start difference. First operand has 835 states, 828 states have (on average 1.3973429951690821) internal successors, (1157), 834 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 01:13:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:19,099 INFO L93 Difference]: Finished difference Result 1667 states and 2311 transitions. [2021-11-07 01:13:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:13:19,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 62 [2021-11-07 01:13:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:19,124 INFO L225 Difference]: With dead ends: 1667 [2021-11-07 01:13:19,124 INFO L226 Difference]: Without dead ends: 823 [2021-11-07 01:13:19,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 122 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 01:13:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-07 01:13:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2021-11-07 01:13:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 817 states have (on average 1.3733170134638923) internal successors, (1122), 822 states have internal predecessors, (1122), 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 01:13:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1122 transitions. [2021-11-07 01:13:19,233 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1122 transitions. Word has length 62 [2021-11-07 01:13:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:19,234 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1122 transitions. [2021-11-07 01:13:19,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 01:13:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1122 transitions. [2021-11-07 01:13:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:13:19,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:19,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:19,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:19,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:19,455 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:19,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1732742655, now seen corresponding path program 1 times [2021-11-07 01:13:19,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:19,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529152458] [2021-11-07 01:13:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:19,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:19,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:19,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:19,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:13:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:20,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:20,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:21,131 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 01:13:21,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:21,457 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 01:13:21,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:21,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529152458] [2021-11-07 01:13:21,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529152458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:21,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:21,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:13:21,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479628291] [2021-11-07 01:13:21,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:21,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:21,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:21,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:21,461 INFO L87 Difference]: Start difference. First operand 823 states and 1122 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 01:13:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:21,729 INFO L93 Difference]: Finished difference Result 1664 states and 2273 transitions. [2021-11-07 01:13:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:21,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-07 01:13:21,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:21,739 INFO L225 Difference]: With dead ends: 1664 [2021-11-07 01:13:21,739 INFO L226 Difference]: Without dead ends: 844 [2021-11-07 01:13:21,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-11-07 01:13:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 841. [2021-11-07 01:13:21,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 835 states have (on average 1.3760479041916167) internal successors, (1149), 840 states have internal predecessors, (1149), 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 01:13:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1149 transitions. [2021-11-07 01:13:21,781 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1149 transitions. Word has length 63 [2021-11-07 01:13:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:21,782 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1149 transitions. [2021-11-07 01:13:21,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 01:13:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1149 transitions. [2021-11-07 01:13:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:13:21,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:21,787 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:21,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:22,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:22,007 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2128587854, now seen corresponding path program 1 times [2021-11-07 01:13:22,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:22,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659457382] [2021-11-07 01:13:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:22,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:22,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:22,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:22,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:13:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:23,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:13:23,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:23,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:24,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:24,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659457382] [2021-11-07 01:13:24,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659457382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:24,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:24,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:13:24,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047724885] [2021-11-07 01:13:24,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:13:24,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:13:24,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:13:24,263 INFO L87 Difference]: Start difference. First operand 841 states and 1149 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:26,591 INFO L93 Difference]: Finished difference Result 1683 states and 2300 transitions. [2021-11-07 01:13:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:13:26,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 01:13:26,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:26,600 INFO L225 Difference]: With dead ends: 1683 [2021-11-07 01:13:26,600 INFO L226 Difference]: Without dead ends: 839 [2021-11-07 01:13:26,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:13:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-07 01:13:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2021-11-07 01:13:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 833 states have (on average 1.3733493397358945) internal successors, (1144), 838 states have internal predecessors, (1144), 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 01:13:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1144 transitions. [2021-11-07 01:13:26,636 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1144 transitions. Word has length 85 [2021-11-07 01:13:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:26,637 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1144 transitions. [2021-11-07 01:13:26,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1144 transitions. [2021-11-07 01:13:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:13:26,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:26,642 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:26,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:26,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:26,855 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:26,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1592921077, now seen corresponding path program 1 times [2021-11-07 01:13:26,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:26,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381406669] [2021-11-07 01:13:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:26,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:26,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:26,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:26,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:13:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:28,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:28,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:28,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:29,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:29,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381406669] [2021-11-07 01:13:29,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381406669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:29,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:29,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:29,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168468799] [2021-11-07 01:13:29,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:13:29,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:13:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:29,178 INFO L87 Difference]: Start difference. First operand 839 states and 1144 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:31,500 INFO L93 Difference]: Finished difference Result 1741 states and 2393 transitions. [2021-11-07 01:13:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 01:13:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:31,508 INFO L225 Difference]: With dead ends: 1741 [2021-11-07 01:13:31,509 INFO L226 Difference]: Without dead ends: 905 [2021-11-07 01:13:31,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 166 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 01:13:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-07 01:13:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 899. [2021-11-07 01:13:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 893 states have (on average 1.3818589025755879) internal successors, (1234), 898 states have internal predecessors, (1234), 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 01:13:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1234 transitions. [2021-11-07 01:13:31,546 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1234 transitions. Word has length 85 [2021-11-07 01:13:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:31,546 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1234 transitions. [2021-11-07 01:13:31,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:31,547 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1234 transitions. [2021-11-07 01:13:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 01:13:31,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:31,550 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:31,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:31,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:31,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:31,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1295159176, now seen corresponding path program 1 times [2021-11-07 01:13:31,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:31,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570636794] [2021-11-07 01:13:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:31,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:31,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:31,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:31,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:13:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:33,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:33,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:13:33,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:13:33,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:33,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570636794] [2021-11-07 01:13:33,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570636794] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:33,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:33,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:13:33,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645926042] [2021-11-07 01:13:33,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:33,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:33,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:33,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:33,892 INFO L87 Difference]: Start difference. First operand 899 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:33,994 INFO L93 Difference]: Finished difference Result 2689 states and 3693 transitions. [2021-11-07 01:13:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:33,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-07 01:13:33,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:34,010 INFO L225 Difference]: With dead ends: 2689 [2021-11-07 01:13:34,010 INFO L226 Difference]: Without dead ends: 1793 [2021-11-07 01:13:34,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-11-07 01:13:34,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 900. [2021-11-07 01:13:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 894 states have (on average 1.3814317673378076) internal successors, (1235), 899 states have internal predecessors, (1235), 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 01:13:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1235 transitions. [2021-11-07 01:13:34,059 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1235 transitions. Word has length 99 [2021-11-07 01:13:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:34,060 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 1235 transitions. [2021-11-07 01:13:34,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:34,061 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1235 transitions. [2021-11-07 01:13:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 01:13:34,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:34,068 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:34,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:34,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:34,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1712555782, now seen corresponding path program 1 times [2021-11-07 01:13:34,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:34,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431858244] [2021-11-07 01:13:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:34,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:34,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:34,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:13:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:35,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:35,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:35,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:36,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:36,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431858244] [2021-11-07 01:13:36,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431858244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:36,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:36,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:36,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916405336] [2021-11-07 01:13:36,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:13:36,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:13:36,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:36,320 INFO L87 Difference]: Start difference. First operand 900 states and 1235 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:36,449 INFO L93 Difference]: Finished difference Result 1805 states and 2479 transitions. [2021-11-07 01:13:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-07 01:13:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:36,457 INFO L225 Difference]: With dead ends: 1805 [2021-11-07 01:13:36,457 INFO L226 Difference]: Without dead ends: 908 [2021-11-07 01:13:36,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 194 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 01:13:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-07 01:13:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2021-11-07 01:13:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 902 states have (on average 1.3780487804878048) internal successors, (1243), 907 states have internal predecessors, (1243), 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 01:13:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1243 transitions. [2021-11-07 01:13:36,491 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1243 transitions. Word has length 99 [2021-11-07 01:13:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:36,492 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1243 transitions. [2021-11-07 01:13:36,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1243 transitions. [2021-11-07 01:13:36,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:13:36,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:36,495 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:36,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:36,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:36,711 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1317856016, now seen corresponding path program 1 times [2021-11-07 01:13:36,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:36,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883235701] [2021-11-07 01:13:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:36,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:36,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:36,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:36,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:13:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:38,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:13:38,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:38,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:38,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:38,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883235701] [2021-11-07 01:13:38,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883235701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:38,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [877768422] [2021-11-07 01:13:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:38,948 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:38,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:13:38,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:13:38,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:13:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:40,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:40,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:40,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:41,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [877768422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:41,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:13:41,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:13:41,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521181681] [2021-11-07 01:13:41,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:41,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:41,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:41,437 INFO L87 Difference]: Start difference. First operand 908 states and 1243 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:41,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:41,611 INFO L93 Difference]: Finished difference Result 1813 states and 2483 transitions. [2021-11-07 01:13:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:41,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 01:13:41,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:41,619 INFO L225 Difference]: With dead ends: 1813 [2021-11-07 01:13:41,620 INFO L226 Difference]: Without dead ends: 908 [2021-11-07 01:13:41,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-07 01:13:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2021-11-07 01:13:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 902 states have (on average 1.3636363636363635) internal successors, (1230), 907 states have internal predecessors, (1230), 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 01:13:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1230 transitions. [2021-11-07 01:13:41,658 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1230 transitions. Word has length 103 [2021-11-07 01:13:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:41,659 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1230 transitions. [2021-11-07 01:13:41,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1230 transitions. [2021-11-07 01:13:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:13:41,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:41,662 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:41,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:41,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:42,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:42,079 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash -500207566, now seen corresponding path program 1 times [2021-11-07 01:13:42,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:42,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612238503] [2021-11-07 01:13:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:42,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:42,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:42,087 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:42,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:13:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:43,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:13:43,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:44,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:44,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:44,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612238503] [2021-11-07 01:13:44,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612238503] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:44,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1710264763] [2021-11-07 01:13:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:44,513 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:44,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:13:44,518 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:13:44,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:13:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:45,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:45,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:13:45,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:13:46,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1710264763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:46,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:13:46,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:13:46,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705085298] [2021-11-07 01:13:46,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:46,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:46,186 INFO L87 Difference]: Start difference. First operand 908 states and 1230 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:46,320 INFO L93 Difference]: Finished difference Result 1815 states and 2461 transitions. [2021-11-07 01:13:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:46,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 01:13:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:46,330 INFO L225 Difference]: With dead ends: 1815 [2021-11-07 01:13:46,330 INFO L226 Difference]: Without dead ends: 910 [2021-11-07 01:13:46,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-11-07 01:13:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2021-11-07 01:13:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 904 states have (on average 1.3628318584070795) internal successors, (1232), 909 states have internal predecessors, (1232), 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 01:13:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1232 transitions. [2021-11-07 01:13:46,367 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1232 transitions. Word has length 103 [2021-11-07 01:13:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:46,369 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 1232 transitions. [2021-11-07 01:13:46,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1232 transitions. [2021-11-07 01:13:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:13:46,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:46,372 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:46,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:46,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:46,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:46,791 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash -893234576, now seen corresponding path program 1 times [2021-11-07 01:13:46,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:46,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746609711] [2021-11-07 01:13:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:46,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:46,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:46,794 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:46,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:13:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:48,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:13:48,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:48,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:13:49,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:49,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746609711] [2021-11-07 01:13:49,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746609711] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:49,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [623692858] [2021-11-07 01:13:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:49,164 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:13:49,164 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:13:49,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:13:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:50,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:50,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:13:50,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:13:50,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [623692858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:50,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:13:50,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:13:50,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977314971] [2021-11-07 01:13:50,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:50,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:50,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:50,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:50,952 INFO L87 Difference]: Start difference. First operand 910 states and 1232 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:51,619 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2021-11-07 01:13:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:51,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 01:13:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:51,632 INFO L225 Difference]: With dead ends: 2604 [2021-11-07 01:13:51,633 INFO L226 Difference]: Without dead ends: 1697 [2021-11-07 01:13:51,635 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:51,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2021-11-07 01:13:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 946. [2021-11-07 01:13:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 940 states have (on average 1.3617021276595744) internal successors, (1280), 945 states have internal predecessors, (1280), 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 01:13:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1280 transitions. [2021-11-07 01:13:51,736 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1280 transitions. Word has length 103 [2021-11-07 01:13:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:51,736 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1280 transitions. [2021-11-07 01:13:51,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1280 transitions. [2021-11-07 01:13:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 01:13:51,739 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:51,739 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:51,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:51,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:13:52,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:52,147 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:52,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1729470653, now seen corresponding path program 1 times [2021-11-07 01:13:52,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:52,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354746732] [2021-11-07 01:13:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:52,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:52,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:52,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:52,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:13:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:53,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:13:53,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:13:54,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:13:54,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:54,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354746732] [2021-11-07 01:13:54,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354746732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:54,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1078299135] [2021-11-07 01:13:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:54,754 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:54,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:13:54,756 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:13:54,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:13:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:56,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:56,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:13:56,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:13:57,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1078299135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:57,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:13:57,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:13:57,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423155268] [2021-11-07 01:13:57,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:57,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:57,002 INFO L87 Difference]: Start difference. First operand 946 states and 1280 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 01:13:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:57,147 INFO L93 Difference]: Finished difference Result 2034 states and 2764 transitions. [2021-11-07 01:13:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:57,151 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 112 [2021-11-07 01:13:57,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:57,159 INFO L225 Difference]: With dead ends: 2034 [2021-11-07 01:13:57,159 INFO L226 Difference]: Without dead ends: 1091 [2021-11-07 01:13:57,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 436 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2021-11-07 01:13:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 948. [2021-11-07 01:13:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 942 states have (on average 1.3609341825902335) internal successors, (1282), 947 states have internal predecessors, (1282), 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 01:13:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1282 transitions. [2021-11-07 01:13:57,216 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1282 transitions. Word has length 112 [2021-11-07 01:13:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:57,216 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1282 transitions. [2021-11-07 01:13:57,216 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 01:13:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1282 transitions. [2021-11-07 01:13:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 01:13:57,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:57,220 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:57,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 01:13:57,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:57,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:57,629 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash -299115457, now seen corresponding path program 1 times [2021-11-07 01:13:57,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:57,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821367513] [2021-11-07 01:13:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:57,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:57,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:57,633 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:57,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:13:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:59,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:13:59,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:13:59,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:00,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:00,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821367513] [2021-11-07 01:14:00,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821367513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:00,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [326705333] [2021-11-07 01:14:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:00,381 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:00,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:00,381 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:00,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:14:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:01,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:02,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:14:02,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:14:02,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [326705333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:02,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:14:02,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 01:14:02,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633288653] [2021-11-07 01:14:02,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:14:02,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:02,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:14:02,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:14:02,811 INFO L87 Difference]: Start difference. First operand 948 states and 1282 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:03,101 INFO L93 Difference]: Finished difference Result 2225 states and 3027 transitions. [2021-11-07 01:14:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:03,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 01:14:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:03,111 INFO L225 Difference]: With dead ends: 2225 [2021-11-07 01:14:03,111 INFO L226 Difference]: Without dead ends: 1280 [2021-11-07 01:14:03,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:14:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-11-07 01:14:03,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 948. [2021-11-07 01:14:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 942 states have (on average 1.356687898089172) internal successors, (1278), 947 states have internal predecessors, (1278), 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 01:14:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1278 transitions. [2021-11-07 01:14:03,189 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1278 transitions. Word has length 112 [2021-11-07 01:14:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:03,190 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1278 transitions. [2021-11-07 01:14:03,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1278 transitions. [2021-11-07 01:14:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 01:14:03,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:03,194 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:03,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:03,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:03,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:03,611 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2129718291, now seen corresponding path program 1 times [2021-11-07 01:14:03,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:03,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143686925] [2021-11-07 01:14:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:03,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:03,613 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:03,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:14:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:05,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:05,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:05,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:06,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:06,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143686925] [2021-11-07 01:14:06,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143686925] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:06,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [503475903] [2021-11-07 01:14:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:06,188 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:06,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:06,189 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:06,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:14:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:07,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:07,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:14:08,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:14:08,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [503475903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:08,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:14:08,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 01:14:08,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411535579] [2021-11-07 01:14:08,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:14:08,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:14:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:14:08,491 INFO L87 Difference]: Start difference. First operand 948 states and 1278 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 01:14:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:10,189 INFO L93 Difference]: Finished difference Result 2452 states and 3336 transitions. [2021-11-07 01:14:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 120 [2021-11-07 01:14:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:10,203 INFO L225 Difference]: With dead ends: 2452 [2021-11-07 01:14:10,203 INFO L226 Difference]: Without dead ends: 1507 [2021-11-07 01:14:10,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:14:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-11-07 01:14:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 952. [2021-11-07 01:14:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 946 states have (on average 1.3551797040169133) internal successors, (1282), 951 states have internal predecessors, (1282), 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 01:14:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1282 transitions. [2021-11-07 01:14:10,284 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1282 transitions. Word has length 120 [2021-11-07 01:14:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:10,285 INFO L470 AbstractCegarLoop]: Abstraction has 952 states and 1282 transitions. [2021-11-07 01:14:10,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 01:14:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1282 transitions. [2021-11-07 01:14:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 01:14:10,288 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:10,288 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:10,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:10,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:10,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:10,706 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1234947815, now seen corresponding path program 1 times [2021-11-07 01:14:10,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:10,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201478479] [2021-11-07 01:14:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:10,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:10,710 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:10,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:14:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:12,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:12,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:12,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:13,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:13,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201478479] [2021-11-07 01:14:13,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201478479] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:13,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1626452311] [2021-11-07 01:14:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:13,252 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:13,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:13,252 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:13,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:14:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:15,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:15,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:16,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:16,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1626452311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:16,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552475738] [2021-11-07 01:14:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:16,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:16,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:16,603 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:16,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 01:14:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:18,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:18,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:18,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 73 [2021-11-07 01:14:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:14:18,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:19,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 86 [2021-11-07 01:14:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:14:20,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552475738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:20,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:14:20,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 01:14:20,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329602811] [2021-11-07 01:14:20,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:14:20,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:14:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:14:20,265 INFO L87 Difference]: Start difference. First operand 952 states and 1282 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 01:14:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:20,777 INFO L93 Difference]: Finished difference Result 2094 states and 2828 transitions. [2021-11-07 01:14:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:20,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 123 [2021-11-07 01:14:20,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:20,785 INFO L225 Difference]: With dead ends: 2094 [2021-11-07 01:14:20,785 INFO L226 Difference]: Without dead ends: 1145 [2021-11-07 01:14:20,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:14:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-07 01:14:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 956. [2021-11-07 01:14:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 950 states have (on average 1.3536842105263158) internal successors, (1286), 955 states have internal predecessors, (1286), 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 01:14:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1286 transitions. [2021-11-07 01:14:20,856 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1286 transitions. Word has length 123 [2021-11-07 01:14:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:20,856 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1286 transitions. [2021-11-07 01:14:20,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 01:14:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1286 transitions. [2021-11-07 01:14:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 01:14:20,860 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:20,860 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:20,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:21,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:21,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:21,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:21,483 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1182383263, now seen corresponding path program 1 times [2021-11-07 01:14:21,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:21,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147906520] [2021-11-07 01:14:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:21,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:21,486 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:21,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:14:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:23,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:23,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:23,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:24,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:24,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147906520] [2021-11-07 01:14:24,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147906520] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:24,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1408646111] [2021-11-07 01:14:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:24,339 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:24,340 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:24,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:14:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:27,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:27,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:27,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:27,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1408646111] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:27,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634286714] [2021-11-07 01:14:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:27,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:27,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:27,843 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:27,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 01:14:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:29,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:29,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:30,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:30,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634286714] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:30,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:30,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2021-11-07 01:14:30,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786596097] [2021-11-07 01:14:30,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:14:30,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:14:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:14:30,692 INFO L87 Difference]: Start difference. First operand 956 states and 1286 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 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 01:14:31,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:31,254 INFO L93 Difference]: Finished difference Result 2063 states and 2791 transitions. [2021-11-07 01:14:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:14:31,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 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 124 [2021-11-07 01:14:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:31,263 INFO L225 Difference]: With dead ends: 2063 [2021-11-07 01:14:31,263 INFO L226 Difference]: Without dead ends: 1110 [2021-11-07 01:14:31,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:14:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-07 01:14:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 972. [2021-11-07 01:14:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 966 states have (on average 1.3478260869565217) internal successors, (1302), 971 states have internal predecessors, (1302), 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 01:14:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1302 transitions. [2021-11-07 01:14:31,353 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1302 transitions. Word has length 124 [2021-11-07 01:14:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:31,353 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1302 transitions. [2021-11-07 01:14:31,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 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 01:14:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1302 transitions. [2021-11-07 01:14:31,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 01:14:31,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:31,357 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:31,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:31,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-07 01:14:31,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:31,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:31,973 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:31,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash -521140235, now seen corresponding path program 2 times [2021-11-07 01:14:31,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:31,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475113547] [2021-11-07 01:14:31,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:31,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:31,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:31,976 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:31,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 01:14:53,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:14:53,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:53,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:14:53,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:54,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:14:55,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:55,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475113547] [2021-11-07 01:14:55,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475113547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:55,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [619244847] [2021-11-07 01:14:55,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:55,231 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:55,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:55,231 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:55,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-07 01:25:57,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:25:57,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:25:58,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:25:58,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:25:58,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:25:59,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [619244847] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:59,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860539415] [2021-11-07 01:25:59,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:25:59,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:25:59,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:59,460 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:25:59,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3cebcdc-4ddc-47fe-a143-ac185ec3f2d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process