./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/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 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:30:52,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:30:52,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:30:52,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:30:53,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:30:53,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:30:53,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:30:53,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:30:53,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:30:53,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:30:53,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:30:53,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:30:53,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:30:53,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:30:53,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:30:53,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:30:53,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:30:53,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:30:53,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:30:53,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:30:53,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:30:53,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:30:53,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:30:53,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:30:53,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:30:53,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:30:53,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:30:53,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:30:53,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:30:53,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:30:53,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:30:53,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:30:53,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:30:53,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:30:53,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:30:53,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:30:53,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:30:53,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:30:53,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:30:53,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:30:53,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:30:53,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:30:53,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:30:53,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:30:53,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:30:53,171 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:30:53,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:30:53,172 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:30:53,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:30:53,173 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:30:53,180 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:30:53,181 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:30:53,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:30:53,182 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:30:53,183 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:30:53,183 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:30:53,183 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:30:53,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:30:53,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:30:53,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:30:53,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:30:53,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:30:53,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:30:53,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:30:53,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:30:53,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:30:53,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:30:53,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:30:53,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:30:53,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:30:53,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:30:53,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:30:53,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:30:53,191 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:30:53,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:30:53,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:30:53,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:30:53,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:30:53,193 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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 [2021-11-07 01:30:53,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:30:53,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:30:53,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:30:53,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:30:53,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:30:53,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-07 01:30:53,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data/18f616394/0975c8f4d51b4382a2272ea42dc688fa/FLAGff418e54d [2021-11-07 01:30:54,911 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:30:54,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-07 01:30:54,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data/18f616394/0975c8f4d51b4382a2272ea42dc688fa/FLAGff418e54d [2021-11-07 01:30:55,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data/18f616394/0975c8f4d51b4382a2272ea42dc688fa [2021-11-07 01:30:55,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:30:55,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:30:55,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:55,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:30:55,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:30:55,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:55" (1/1) ... [2021-11-07 01:30:55,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5b9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:55, skipping insertion in model container [2021-11-07 01:30:55,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:30:55" (1/1) ... [2021-11-07 01:30:55,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:30:55,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:30:56,485 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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-07 01:30:57,244 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 01:30:57,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:30:57,428 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 01:30:57,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@782ed8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:30:57, skipping insertion in model container [2021-11-07 01:30:57,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:30:57,430 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:30:57,432 INFO L168 Benchmark]: Toolchain (without parser) took 2289.26 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 59.9 MB in the beginning and 58.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:30:57,433 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:30:57,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2286.87 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 59.6 MB in the beginning and 58.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:30:57,436 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 88.1 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2286.87 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 59.6 MB in the beginning and 58.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5924]: 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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/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 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:30:59,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:30:59,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:31:00,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:31:00,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:31:00,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:31:00,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:31:00,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:31:00,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:31:00,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:31:00,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:31:00,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:31:00,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:31:00,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:31:00,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:31:00,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:31:00,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:31:00,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:31:00,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:31:00,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:31:00,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:31:00,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:31:00,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:31:00,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:31:00,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:31:00,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:31:00,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:31:00,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:31:00,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:31:00,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:31:00,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:31:00,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:31:00,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:31:00,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:31:00,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:31:00,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:31:00,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:31:00,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:31:00,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:31:00,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:31:00,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:31:00,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:31:00,154 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:31:00,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:31:00,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:31:00,159 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:31:00,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:31:00,160 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:31:00,161 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:31:00,161 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:31:00,161 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:31:00,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:31:00,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:31:00,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:31:00,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:31:00,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:31:00,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:31:00,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:31:00,167 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:31:00,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:31:00,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:31:00,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:31:00,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:31:00,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:31:00,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:31:00,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:31:00,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:31:00,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:31:00,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:31:00,170 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:31:00,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:31:00,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:31:00,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:31:00,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:31:00,172 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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 [2021-11-07 01:31:00,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:31:00,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:31:00,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:31:00,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:31:00,725 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:31:00,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-07 01:31:00,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data/b8005f239/eb300adea71f4f74abbee3ba3bb81b39/FLAGc47d6816d [2021-11-07 01:31:01,962 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:31:01,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-07 01:31:02,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data/b8005f239/eb300adea71f4f74abbee3ba3bb81b39/FLAGc47d6816d [2021-11-07 01:31:02,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/data/b8005f239/eb300adea71f4f74abbee3ba3bb81b39 [2021-11-07 01:31:02,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:31:02,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:31:02,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:31:02,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:31:02,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:31:02,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:02" (1/1) ... [2021-11-07 01:31:02,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1021c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:02, skipping insertion in model container [2021-11-07 01:31:02,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:02" (1/1) ... [2021-11-07 01:31:02,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:31:02,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:31:03,490 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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-07 01:31:04,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:04,525 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:31:04,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:31:04,727 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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-07 01:31:04,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:04,958 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:31:05,152 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_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-07 01:31:05,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:05,445 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:31:05,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05 WrapperNode [2021-11-07 01:31:05,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:31:05,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:31:05,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:31:05,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:31:05,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:05,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:05,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:31:05,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:31:05,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:31:05,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:31:05,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:05,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:06,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:06,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:06,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:06,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:06,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:06,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:31:06,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:31:06,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:31:06,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:31:06,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (1/1) ... [2021-11-07 01:31:06,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:31:06,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:06,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:31:06,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:31:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:31:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:31:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:31:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:31:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:31:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:31:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:31:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:31:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:31:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:31:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:31:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:31:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:31:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:31:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:31:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:31:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:31:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:31:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:31:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:31:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:31:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:31:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 01:31:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 01:31:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:31:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:31:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:31:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:31:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:31:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure can_fill_info [2021-11-07 01:31:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fill_info [2021-11-07 01:31:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:31:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:31:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:33:20,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:33:20,762 INFO L299 CfgBuilder]: Removed 1023 assume(true) statements. [2021-11-07 01:33:20,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:20 BoogieIcfgContainer [2021-11-07 01:33:20,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:33:20,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:33:20,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:33:20,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:33:20,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:31:02" (1/3) ... [2021-11-07 01:33:20,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f75dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:20, skipping insertion in model container [2021-11-07 01:33:20,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:05" (2/3) ... [2021-11-07 01:33:20,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f75dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:20, skipping insertion in model container [2021-11-07 01:33:20,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:20" (3/3) ... [2021-11-07 01:33:20,778 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-07 01:33:20,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:33:20,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:33:20,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:33:20,856 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 01:33:20,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:33:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 1522 states, 1512 states have (on average 1.5165343915343916) internal successors, (2293), 1513 states have internal predecessors, (2293), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 01:33:20,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:33:20,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:20,920 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] [2021-11-07 01:33:20,920 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:20,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:20,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1434506225, now seen corresponding path program 1 times [2021-11-07 01:33:20,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:20,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080793729] [2021-11-07 01:33:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:20,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:20,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:20,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:20,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:33:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:23,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:33:23,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:23,397 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 01:33:23,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:23,722 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 01:33:23,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:23,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080793729] [2021-11-07 01:33:23,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080793729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:23,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:23,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:33:23,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131514773] [2021-11-07 01:33:23,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:33:23,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:33:23,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:33:23,755 INFO L87 Difference]: Start difference. First operand has 1522 states, 1512 states have (on average 1.5165343915343916) internal successors, (2293), 1513 states have internal predecessors, (2293), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 01:33:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:26,425 INFO L93 Difference]: Finished difference Result 5976 states and 9077 transitions. [2021-11-07 01:33:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:33:26,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 20 [2021-11-07 01:33:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:26,481 INFO L225 Difference]: With dead ends: 5976 [2021-11-07 01:33:26,482 INFO L226 Difference]: Without dead ends: 4425 [2021-11-07 01:33:26,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 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 01:33:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2021-11-07 01:33:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4425. [2021-11-07 01:33:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4425 states, 4400 states have (on average 1.476590909090909) internal successors, (6497), 4400 states have internal predecessors, (6497), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 01:33:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 6533 transitions. [2021-11-07 01:33:26,812 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 6533 transitions. Word has length 20 [2021-11-07 01:33:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:26,813 INFO L470 AbstractCegarLoop]: Abstraction has 4425 states and 6533 transitions. [2021-11-07 01:33:26,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 01:33:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 6533 transitions. [2021-11-07 01:33:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:33:26,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:26,824 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] [2021-11-07 01:33:26,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:33:27,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:27,025 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:27,026 INFO L85 PathProgramCache]: Analyzing trace with hash -96184408, now seen corresponding path program 1 times [2021-11-07 01:33:27,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:27,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317355131] [2021-11-07 01:33:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:27,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:27,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:27,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:27,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:33:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:28,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:28,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:29,102 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 01:33:29,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:29,194 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 01:33:29,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:29,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317355131] [2021-11-07 01:33:29,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317355131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:29,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:29,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:33:29,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619034820] [2021-11-07 01:33:29,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:33:29,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:29,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:33:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:33:29,198 INFO L87 Difference]: Start difference. First operand 4425 states and 6533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 01:33:29,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:29,898 INFO L93 Difference]: Finished difference Result 11693 states and 17276 transitions. [2021-11-07 01:33:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:33:29,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-11-07 01:33:29,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:29,944 INFO L225 Difference]: With dead ends: 11693 [2021-11-07 01:33:29,945 INFO L226 Difference]: Without dead ends: 7277 [2021-11-07 01:33:29,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:33:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2021-11-07 01:33:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 4428. [2021-11-07 01:33:30,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4403 states have (on average 1.4760390642743584) internal successors, (6499), 4403 states have internal predecessors, (6499), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 01:33:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 6535 transitions. [2021-11-07 01:33:30,210 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 6535 transitions. Word has length 26 [2021-11-07 01:33:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:30,210 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 6535 transitions. [2021-11-07 01:33:30,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 01:33:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 6535 transitions. [2021-11-07 01:33:30,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:33:30,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:30,213 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] [2021-11-07 01:33:30,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:30,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:30,443 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash 583873962, now seen corresponding path program 1 times [2021-11-07 01:33:30,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:30,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177055204] [2021-11-07 01:33:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:30,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:30,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:30,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:30,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:33:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:32,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:32,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:32,816 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 01:33:32,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:33,086 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 01:33:33,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:33,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177055204] [2021-11-07 01:33:33,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177055204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:33,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:33,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:33:33,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586458739] [2021-11-07 01:33:33,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:33:33,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:33:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:33:33,089 INFO L87 Difference]: Start difference. First operand 4428 states and 6535 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 01:33:35,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:35,325 INFO L93 Difference]: Finished difference Result 13264 states and 19584 transitions. [2021-11-07 01:33:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:33:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 26 [2021-11-07 01:33:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:35,382 INFO L225 Difference]: With dead ends: 13264 [2021-11-07 01:33:35,382 INFO L226 Difference]: Without dead ends: 8839 [2021-11-07 01:33:35,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:33:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2021-11-07 01:33:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8719. [2021-11-07 01:33:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8719 states, 8670 states have (on average 1.4779700115340253) internal successors, (12814), 8670 states have internal predecessors, (12814), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-07 01:33:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8719 states to 8719 states and 12886 transitions. [2021-11-07 01:33:35,876 INFO L78 Accepts]: Start accepts. Automaton has 8719 states and 12886 transitions. Word has length 26 [2021-11-07 01:33:35,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:35,877 INFO L470 AbstractCegarLoop]: Abstraction has 8719 states and 12886 transitions. [2021-11-07 01:33:35,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 01:33:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 8719 states and 12886 transitions. [2021-11-07 01:33:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:33:35,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:35,898 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] [2021-11-07 01:33:35,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:36,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:36,121 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash 52819245, now seen corresponding path program 1 times [2021-11-07 01:33:36,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:36,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661128541] [2021-11-07 01:33:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:36,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:36,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:36,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:36,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:33:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:38,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:33:38,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:38,962 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 01:33:38,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:39,412 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 01:33:39,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:39,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661128541] [2021-11-07 01:33:39,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661128541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:39,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:39,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:33:39,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454530361] [2021-11-07 01:33:39,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:33:39,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:39,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:33:39,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:33:39,415 INFO L87 Difference]: Start difference. First operand 8719 states and 12886 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 01:33:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:41,858 INFO L93 Difference]: Finished difference Result 33811 states and 50020 transitions. [2021-11-07 01:33:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:33:41,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 68 [2021-11-07 01:33:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:41,978 INFO L225 Difference]: With dead ends: 33811 [2021-11-07 01:33:41,979 INFO L226 Difference]: Without dead ends: 25101 [2021-11-07 01:33:41,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 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 01:33:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25101 states. [2021-11-07 01:33:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25101 to 25085. [2021-11-07 01:33:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25085 states, 24940 states have (on average 1.4774659182036889) internal successors, (36848), 24940 states have internal predecessors, (36848), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-07 01:33:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25085 states to 25085 states and 37064 transitions. [2021-11-07 01:33:43,362 INFO L78 Accepts]: Start accepts. Automaton has 25085 states and 37064 transitions. Word has length 68 [2021-11-07 01:33:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:43,367 INFO L470 AbstractCegarLoop]: Abstraction has 25085 states and 37064 transitions. [2021-11-07 01:33:43,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 01:33:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 25085 states and 37064 transitions. [2021-11-07 01:33:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:33:43,390 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:43,390 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:43,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:43,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:43,613 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:43,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1808415354, now seen corresponding path program 1 times [2021-11-07 01:33:43,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:43,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856688979] [2021-11-07 01:33:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:43,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:43,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:43,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:43,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:33:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:46,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:33:46,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:46,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:46,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:46,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856688979] [2021-11-07 01:33:46,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856688979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:46,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:46,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:33:46,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388810156] [2021-11-07 01:33:46,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:33:46,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:33:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:33:46,630 INFO L87 Difference]: Start difference. First operand 25085 states and 37064 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 01:33:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:50,720 INFO L93 Difference]: Finished difference Result 116152 states and 172779 transitions. [2021-11-07 01:33:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:33:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2021-11-07 01:33:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:51,137 INFO L225 Difference]: With dead ends: 116152 [2021-11-07 01:33:51,137 INFO L226 Difference]: Without dead ends: 91076 [2021-11-07 01:33:51,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:33:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91076 states. [2021-11-07 01:33:53,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91076 to 25241. [2021-11-07 01:33:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25241 states, 25096 states have (on average 1.4744979279566466) internal successors, (37004), 25096 states have internal predecessors, (37004), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-07 01:33:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25241 states to 25241 states and 37220 transitions. [2021-11-07 01:33:53,714 INFO L78 Accepts]: Start accepts. Automaton has 25241 states and 37220 transitions. Word has length 69 [2021-11-07 01:33:53,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:53,715 INFO L470 AbstractCegarLoop]: Abstraction has 25241 states and 37220 transitions. [2021-11-07 01:33:53,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 01:33:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 25241 states and 37220 transitions. [2021-11-07 01:33:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:33:53,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:53,736 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:53,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:53,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:53,961 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:53,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1774398041, now seen corresponding path program 1 times [2021-11-07 01:33:53,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:53,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605433614] [2021-11-07 01:33:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:53,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:53,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:53,969 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:54,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:33:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:56,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:33:56,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:57,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:58,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:58,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605433614] [2021-11-07 01:33:58,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605433614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:58,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:58,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-07 01:33:58,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432889263] [2021-11-07 01:33:58,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:33:58,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:33:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:33:58,049 INFO L87 Difference]: Start difference. First operand 25241 states and 37220 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:28,710 INFO L93 Difference]: Finished difference Result 155318 states and 231953 transitions. [2021-11-07 01:34:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:34:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 01:34:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:29,384 INFO L225 Difference]: With dead ends: 155318 [2021-11-07 01:34:29,384 INFO L226 Difference]: Without dead ends: 130086 [2021-11-07 01:34:29,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:34:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130086 states. [2021-11-07 01:34:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130086 to 25553. [2021-11-07 01:34:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25553 states, 25408 states have (on average 1.4656013853904282) internal successors, (37238), 25408 states have internal predecessors, (37238), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-07 01:34:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25553 states to 25553 states and 37454 transitions. [2021-11-07 01:34:32,985 INFO L78 Accepts]: Start accepts. Automaton has 25553 states and 37454 transitions. Word has length 72 [2021-11-07 01:34:32,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:32,986 INFO L470 AbstractCegarLoop]: Abstraction has 25553 states and 37454 transitions. [2021-11-07 01:34:32,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 25553 states and 37454 transitions. [2021-11-07 01:34:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:34:33,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:33,014 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:34:33,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:33,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:33,237 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1134624173, now seen corresponding path program 1 times [2021-11-07 01:34:33,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:33,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907169920] [2021-11-07 01:34:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:33,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:33,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:33,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:34:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:36,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:36,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:36,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:36,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:36,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907169920] [2021-11-07 01:34:36,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907169920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:36,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:36,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:34:36,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066906143] [2021-11-07 01:34:36,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:34:36,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:34:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:34:36,903 INFO L87 Difference]: Start difference. First operand 25553 states and 37454 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 01:34:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:44,246 INFO L93 Difference]: Finished difference Result 92321 states and 137171 transitions. [2021-11-07 01:34:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:34:44,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 01:34:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:44,415 INFO L225 Difference]: With dead ends: 92321 [2021-11-07 01:34:44,416 INFO L226 Difference]: Without dead ends: 66777 [2021-11-07 01:34:44,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:34:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66777 states. [2021-11-07 01:34:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66777 to 25709. [2021-11-07 01:34:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25709 states, 25564 states have (on average 1.4627601314348302) internal successors, (37394), 25564 states have internal predecessors, (37394), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-07 01:34:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25709 states to 25709 states and 37610 transitions. [2021-11-07 01:34:47,622 INFO L78 Accepts]: Start accepts. Automaton has 25709 states and 37610 transitions. Word has length 74 [2021-11-07 01:34:47,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:47,623 INFO L470 AbstractCegarLoop]: Abstraction has 25709 states and 37610 transitions. [2021-11-07 01:34:47,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 01:34:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 25709 states and 37610 transitions. [2021-11-07 01:34:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:34:47,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:47,647 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:34:47,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:47,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:47,861 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2032017451, now seen corresponding path program 1 times [2021-11-07 01:34:47,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:47,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239143265] [2021-11-07 01:34:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:47,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:47,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:47,867 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:47,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3dacd1-f6c9-47ce-9319-be25fb771ec7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:34:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:50,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:34:50,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:51,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:51,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:51,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239143265] [2021-11-07 01:34:51,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239143265] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:51,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:51,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:34:51,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917905421] [2021-11-07 01:34:51,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:34:51,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:51,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:34:51,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:34:51,656 INFO L87 Difference]: Start difference. First operand 25709 states and 37610 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:02,122 INFO L93 Difference]: Finished difference Result 107483 states and 157313 transitions. [2021-11-07 01:35:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:35:02,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 01:35:02,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:02,286 INFO L225 Difference]: With dead ends: 107483 [2021-11-07 01:35:02,286 INFO L226 Difference]: Without dead ends: 81783 [2021-11-07 01:35:02,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:35:02,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81783 states.