./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--ethernet--renesas--sh_eth.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_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/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_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/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_49e1373a-a435-4205-ba76-84b74732c590/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 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:09:40,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:09:40,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:09:40,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:09:40,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:09:40,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:09:40,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:09:40,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:09:40,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:09:40,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:09:40,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:09:40,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:09:40,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:09:40,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:09:40,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:09:40,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:09:40,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:09:40,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:09:40,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:09:40,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:09:40,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:09:40,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:09:40,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:09:40,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:09:40,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:09:40,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:09:40,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:09:40,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:09:40,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:09:40,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:09:40,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:09:40,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:09:40,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:09:40,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:09:40,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:09:40,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:09:40,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:09:40,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:09:40,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:09:40,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:09:40,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:09:40,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:09:40,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:09:40,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:09:40,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:09:40,606 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:09:40,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:09:40,607 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:09:40,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:09:40,607 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:09:40,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:09:40,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:09:40,609 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:09:40,609 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:09:40,610 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:09:40,610 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:09:40,610 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:09:40,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:09:40,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:09:40,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:09:40,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:09:40,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:09:40,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:09:40,612 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:09:40,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:09:40,613 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:09:40,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:09:40,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:09:40,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:09:40,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:40,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:09:40,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:09:40,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:09:40,616 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:09:40,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:09:40,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:09:40,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:09:40,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:09:40,617 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_49e1373a-a435-4205-ba76-84b74732c590/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-07 01:09:40,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:09:40,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:09:40,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:09:40,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:09:41,007 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:09:41,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-07 01:09:41,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data/6386b6298/aa02c28e5e214f09b8abc1d2c0514943/FLAG38a45e04a [2021-11-07 01:09:42,086 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:09:42,087 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-07 01:09:42,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data/6386b6298/aa02c28e5e214f09b8abc1d2c0514943/FLAG38a45e04a [2021-11-07 01:09:42,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data/6386b6298/aa02c28e5e214f09b8abc1d2c0514943 [2021-11-07 01:09:42,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:09:42,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:09:42,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:42,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:09:42,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:09:42,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:42" (1/1) ... [2021-11-07 01:09:42,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554c6afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:42, skipping insertion in model container [2021-11-07 01:09:42,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:42" (1/1) ... [2021-11-07 01:09:42,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:09:42,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:43,829 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_49e1373a-a435-4205-ba76-84b74732c590/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-07 01:09:44,621 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 01:09:44,632 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 01:09:44,639 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 01:09:44,646 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 01:09:44,800 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 01:09:45,019 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 01:09:45,020 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 01:09:45,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:45,421 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:09:45,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@558d0bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:45, skipping insertion in model container [2021-11-07 01:09:45,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:45,422 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:09:45,424 INFO L168 Benchmark]: Toolchain (without parser) took 2930.03 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 70.6 MB in the beginning and 75.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:45,425 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 113.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:09:45,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2927.29 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 70.3 MB in the beginning and 75.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:45,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 113.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2927.29 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 70.3 MB in the beginning and 75.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6336]: 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_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/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_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/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_49e1373a-a435-4205-ba76-84b74732c590/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 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:09:47,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:09:47,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:09:47,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:09:47,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:09:47,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:09:47,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:09:47,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:09:47,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:09:47,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:09:47,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:09:47,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:09:47,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:09:47,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:09:47,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:09:47,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:09:47,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:09:47,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:09:47,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:09:47,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:09:47,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:09:47,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:09:47,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:09:47,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:09:47,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:09:47,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:09:47,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:09:47,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:09:47,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:09:47,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:09:47,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:09:47,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:09:47,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:09:47,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:09:47,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:09:47,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:09:47,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:09:47,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:09:47,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:09:47,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:09:47,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:09:47,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:09:47,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:09:47,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:09:47,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:09:47,905 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:09:47,905 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:09:47,906 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:09:47,906 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:09:47,906 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:09:47,907 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:09:47,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:09:47,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:09:47,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:09:47,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:09:47,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:09:47,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:09:47,911 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:09:47,911 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:09:47,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:09:47,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:09:47,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:09:47,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:09:47,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:09:47,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:09:47,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:47,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:09:47,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:09:47,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:09:47,914 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:09:47,914 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:47,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:09:47,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:09:47,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:09:47,915 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_49e1373a-a435-4205-ba76-84b74732c590/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-07 01:09:48,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:09:48,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:09:48,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:09:48,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:09:48,352 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:09:48,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-07 01:09:48,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data/b62bccbe4/fb75a0eeadf14bd89df71fb667fc52d4/FLAG3970ad75d [2021-11-07 01:09:49,558 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:09:49,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-07 01:09:49,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data/b62bccbe4/fb75a0eeadf14bd89df71fb667fc52d4/FLAG3970ad75d [2021-11-07 01:09:49,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/data/b62bccbe4/fb75a0eeadf14bd89df71fb667fc52d4 [2021-11-07 01:09:49,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:09:49,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:09:49,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:49,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:09:49,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:09:49,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad1a5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:49, skipping insertion in model container [2021-11-07 01:09:49,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:49" (1/1) ... [2021-11-07 01:09:49,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:09:50,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:51,347 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_49e1373a-a435-4205-ba76-84b74732c590/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-07 01:09:52,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:52,808 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:09:52,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:53,133 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_49e1373a-a435-4205-ba76-84b74732c590/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-07 01:09:53,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:53,570 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:09:53,802 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_49e1373a-a435-4205-ba76-84b74732c590/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-07 01:09:54,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:54,404 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:09:54,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54 WrapperNode [2021-11-07 01:09:54,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:54,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:09:54,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:09:54,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:09:54,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:54,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:55,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:09:55,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:09:55,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:09:55,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:09:55,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:55,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:55,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:55,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:56,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:56,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:56,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:56,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:09:56,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:09:56,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:09:56,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:09:56,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (1/1) ... [2021-11-07 01:09:56,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:56,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:09:56,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:09:56,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:09:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:09:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:09:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:09:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:09:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:09:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:09:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 01:09:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:09:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:09:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 01:09:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tx_timeout [2021-11-07 01:09:56,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tx_timeout [2021-11-07 01:09:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:09:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:09:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:09:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:09:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:09:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:09:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:09:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:09:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:09:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:09:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_dev_init [2021-11-07 01:09:56,986 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_dev_init [2021-11-07 01:09:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:09:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:09:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:09:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:09:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_adjust_link [2021-11-07 01:09:56,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_adjust_link [2021-11-07 01:09:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-07 01:09:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:09:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:09:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:09:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:09:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:09:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:09:56,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:09:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:09:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:09:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:09:56,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:14:03,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:14:03,833 INFO L299 CfgBuilder]: Removed 6872 assume(true) statements. [2021-11-07 01:14:03,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:14:03 BoogieIcfgContainer [2021-11-07 01:14:03,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:14:03,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:14:03,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:14:03,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:14:03,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:09:49" (1/3) ... [2021-11-07 01:14:03,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309040f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:14:03, skipping insertion in model container [2021-11-07 01:14:03,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:54" (2/3) ... [2021-11-07 01:14:03,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309040f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:14:03, skipping insertion in model container [2021-11-07 01:14:03,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:14:03" (3/3) ... [2021-11-07 01:14:03,852 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-07 01:14:03,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:14:03,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:14:03,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:14:03,983 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 01:14:03,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:14:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 5535 states, 5508 states have (on average 1.3169934640522876) internal successors, (7254), 5511 states have internal predecessors, (7254), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-07 01:14:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:14:04,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:04,122 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:04,123 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:04,130 INFO L85 PathProgramCache]: Analyzing trace with hash 651098964, now seen corresponding path program 1 times [2021-11-07 01:14:04,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:04,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003212031] [2021-11-07 01:14:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:04,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:04,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:04,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:04,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:14:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:13,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 3581 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:14:13,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:13,708 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 01:14:13,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:13,883 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 01:14:13,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:13,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003212031] [2021-11-07 01:14:13,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003212031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:13,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:13,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:13,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585471195] [2021-11-07 01:14:13,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:14:13,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:13,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:14:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:13,930 INFO L87 Difference]: Start difference. First operand has 5535 states, 5508 states have (on average 1.3169934640522876) internal successors, (7254), 5511 states have internal predecessors, (7254), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:15,282 INFO L93 Difference]: Finished difference Result 11051 states and 14600 transitions. [2021-11-07 01:14:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 40 [2021-11-07 01:14:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:15,358 INFO L225 Difference]: With dead ends: 11051 [2021-11-07 01:14:15,359 INFO L226 Difference]: Without dead ends: 5471 [2021-11-07 01:14:15,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 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 01:14:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2021-11-07 01:14:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 5471. [2021-11-07 01:14:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5445 states have (on average 1.2817263544536273) internal successors, (6979), 5447 states have internal predecessors, (6979), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-07 01:14:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 7021 transitions. [2021-11-07 01:14:15,775 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 7021 transitions. Word has length 40 [2021-11-07 01:14:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:15,776 INFO L470 AbstractCegarLoop]: Abstraction has 5471 states and 7021 transitions. [2021-11-07 01:14:15,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 7021 transitions. [2021-11-07 01:14:15,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:14:15,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:15,785 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] [2021-11-07 01:14:15,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:16,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:16,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:16,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:16,001 INFO L85 PathProgramCache]: Analyzing trace with hash 346725332, now seen corresponding path program 1 times [2021-11-07 01:14:16,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:16,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900454614] [2021-11-07 01:14:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:16,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:16,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:16,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:16,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:14:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:26,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 3601 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:26,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:26,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:27,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:27,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900454614] [2021-11-07 01:14:27,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900454614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:27,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:27,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:27,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621141111] [2021-11-07 01:14:27,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:14:27,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:27,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:14:27,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:27,028 INFO L87 Difference]: Start difference. First operand 5471 states and 7021 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:31,326 INFO L93 Difference]: Finished difference Result 21291 states and 27427 transitions. [2021-11-07 01:14:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:31,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:14:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:31,475 INFO L225 Difference]: With dead ends: 21291 [2021-11-07 01:14:31,476 INFO L226 Difference]: Without dead ends: 15912 [2021-11-07 01:14:31,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 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 01:14:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15912 states. [2021-11-07 01:14:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15912 to 15912. [2021-11-07 01:14:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15912 states, 15836 states have (on average 1.2868779994948218) internal successors, (20379), 15842 states have internal predecessors, (20379), 63 states have call successors, (63), 12 states have call predecessors, (63), 12 states have return successors, (63), 60 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-07 01:14:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 20505 transitions. [2021-11-07 01:14:32,315 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 20505 transitions. Word has length 44 [2021-11-07 01:14:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:32,316 INFO L470 AbstractCegarLoop]: Abstraction has 15912 states and 20505 transitions. [2021-11-07 01:14:32,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 20505 transitions. [2021-11-07 01:14:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:14:32,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:32,327 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] [2021-11-07 01:14:32,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:32,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:32,528 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:32,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:32,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1232602161, now seen corresponding path program 1 times [2021-11-07 01:14:32,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:32,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762497491] [2021-11-07 01:14:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:32,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:32,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:32,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:14:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:42,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 3627 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:42,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:43,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:43,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:43,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762497491] [2021-11-07 01:14:43,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762497491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:43,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:43,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:14:43,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174134493] [2021-11-07 01:14:43,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:14:43,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:14:43,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:43,482 INFO L87 Difference]: Start difference. First operand 15912 states and 20505 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:46,517 INFO L93 Difference]: Finished difference Result 47550 states and 61434 transitions. [2021-11-07 01:14:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:46,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:14:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:46,751 INFO L225 Difference]: With dead ends: 47550 [2021-11-07 01:14:46,751 INFO L226 Difference]: Without dead ends: 31725 [2021-11-07 01:14:46,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 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 01:14:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31725 states. [2021-11-07 01:14:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31725 to 31557. [2021-11-07 01:14:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31557 states, 31406 states have (on average 1.2874291536649047) internal successors, (40433), 31418 states have internal predecessors, (40433), 126 states have call successors, (126), 24 states have call predecessors, (126), 24 states have return successors, (189), 120 states have call predecessors, (189), 126 states have call successors, (189) [2021-11-07 01:14:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31557 states to 31557 states and 40748 transitions. [2021-11-07 01:14:48,350 INFO L78 Accepts]: Start accepts. Automaton has 31557 states and 40748 transitions. Word has length 51 [2021-11-07 01:14:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:48,351 INFO L470 AbstractCegarLoop]: Abstraction has 31557 states and 40748 transitions. [2021-11-07 01:14:48,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 31557 states and 40748 transitions. [2021-11-07 01:14:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 01:14:48,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:48,406 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:48,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:48,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:48,620 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:48,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1445784508, now seen corresponding path program 1 times [2021-11-07 01:14:48,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:48,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278518637] [2021-11-07 01:14:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:48,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:48,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:48,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:48,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:14:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:59,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 3966 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:59,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:15:00,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:15:01,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:01,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278518637] [2021-11-07 01:15:01,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278518637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:01,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:01,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:15:01,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528073568] [2021-11-07 01:15:01,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:01,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:01,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:01,040 INFO L87 Difference]: Start difference. First operand 31557 states and 40748 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:15:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:03,395 INFO L93 Difference]: Finished difference Result 59272 states and 76527 transitions. [2021-11-07 01:15:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 139 [2021-11-07 01:15:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:03,554 INFO L225 Difference]: With dead ends: 59272 [2021-11-07 01:15:03,555 INFO L226 Difference]: Without dead ends: 27807 [2021-11-07 01:15:03,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:03,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27807 states. [2021-11-07 01:15:05,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27807 to 27807. [2021-11-07 01:15:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27807 states, 27680 states have (on average 1.286885838150289) internal successors, (35621), 27692 states have internal predecessors, (35621), 102 states have call successors, (102), 24 states have call predecessors, (102), 24 states have return successors, (153), 96 states have call predecessors, (153), 102 states have call successors, (153) [2021-11-07 01:15:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27807 states to 27807 states and 35876 transitions. [2021-11-07 01:15:05,469 INFO L78 Accepts]: Start accepts. Automaton has 27807 states and 35876 transitions. Word has length 139 [2021-11-07 01:15:05,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:05,476 INFO L470 AbstractCegarLoop]: Abstraction has 27807 states and 35876 transitions. [2021-11-07 01:15:05,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:15:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 27807 states and 35876 transitions. [2021-11-07 01:15:05,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 01:15:05,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:05,528 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:05,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:05,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:05,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:05,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:05,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2017089702, now seen corresponding path program 1 times [2021-11-07 01:15:05,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:05,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086491143] [2021-11-07 01:15:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:05,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:05,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:05,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:05,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:15:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:16,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 3968 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:17,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:15:17,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:15:18,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:18,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086491143] [2021-11-07 01:15:18,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086491143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:18,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:18,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:15:18,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723277905] [2021-11-07 01:15:18,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:18,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:18,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:18,137 INFO L87 Difference]: Start difference. First operand 27807 states and 35876 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:15:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:20,657 INFO L93 Difference]: Finished difference Result 72419 states and 93694 transitions. [2021-11-07 01:15:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:20,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2021-11-07 01:15:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:20,882 INFO L225 Difference]: With dead ends: 72419 [2021-11-07 01:15:20,883 INFO L226 Difference]: Without dead ends: 44704 [2021-11-07 01:15:20,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44704 states. [2021-11-07 01:15:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44704 to 44655. [2021-11-07 01:15:23,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44655 states, 44426 states have (on average 1.292418853824337) internal successors, (57417), 44450 states have internal predecessors, (57417), 180 states have call successors, (180), 48 states have call predecessors, (180), 48 states have return successors, (270), 168 states have call predecessors, (270), 180 states have call successors, (270) [2021-11-07 01:15:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44655 states to 44655 states and 57867 transitions. [2021-11-07 01:15:23,604 INFO L78 Accepts]: Start accepts. Automaton has 44655 states and 57867 transitions. Word has length 140 [2021-11-07 01:15:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:23,604 INFO L470 AbstractCegarLoop]: Abstraction has 44655 states and 57867 transitions. [2021-11-07 01:15:23,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:15:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 44655 states and 57867 transitions. [2021-11-07 01:15:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 01:15:23,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:23,650 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:23,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:23,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:23,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1972835057, now seen corresponding path program 1 times [2021-11-07 01:15:23,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:23,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595374516] [2021-11-07 01:15:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:23,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:23,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:23,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:23,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:15:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:35,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 3860 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:35,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:15:35,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:15:36,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:36,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595374516] [2021-11-07 01:15:36,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595374516] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:36,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:36,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:15:36,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574697169] [2021-11-07 01:15:36,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:36,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:36,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:36,219 INFO L87 Difference]: Start difference. First operand 44655 states and 57867 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 01:15:39,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:39,918 INFO L93 Difference]: Finished difference Result 129145 states and 167005 transitions. [2021-11-07 01:15:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:39,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 122 [2021-11-07 01:15:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:40,603 INFO L225 Difference]: With dead ends: 129145 [2021-11-07 01:15:40,603 INFO L226 Difference]: Without dead ends: 84582 [2021-11-07 01:15:40,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84582 states. [2021-11-07 01:15:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84582 to 84135. [2021-11-07 01:15:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84135 states, 83702 states have (on average 1.289085087572579) internal successors, (107899), 83750 states have internal predecessors, (107899), 336 states have call successors, (336), 96 states have call predecessors, (336), 96 states have return successors, (504), 312 states have call predecessors, (504), 336 states have call successors, (504) [2021-11-07 01:15:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84135 states to 84135 states and 108739 transitions. [2021-11-07 01:15:45,052 INFO L78 Accepts]: Start accepts. Automaton has 84135 states and 108739 transitions. Word has length 122 [2021-11-07 01:15:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:45,053 INFO L470 AbstractCegarLoop]: Abstraction has 84135 states and 108739 transitions. [2021-11-07 01:15:45,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 01:15:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 84135 states and 108739 transitions. [2021-11-07 01:15:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 01:15:45,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:45,104 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:45,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:45,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:45,320 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1081993588, now seen corresponding path program 1 times [2021-11-07 01:15:45,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:45,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169698379] [2021-11-07 01:15:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:45,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:45,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:45,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:45,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:15:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:56,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 3983 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:56,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:15:57,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:15:57,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:57,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169698379] [2021-11-07 01:15:57,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169698379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:57,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:57,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:15:57,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352740471] [2021-11-07 01:15:57,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:57,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:57,813 INFO L87 Difference]: Start difference. First operand 84135 states and 108739 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 01:16:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:05,050 INFO L93 Difference]: Finished difference Result 250933 states and 324193 transitions. [2021-11-07 01:16:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:16:05,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 126 [2021-11-07 01:16:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:06,134 INFO L225 Difference]: With dead ends: 250933 [2021-11-07 01:16:06,134 INFO L226 Difference]: Without dead ends: 166890 [2021-11-07 01:16:06,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:16:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166890 states. [2021-11-07 01:16:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166890 to 166563. [2021-11-07 01:16:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166563 states, 165794 states have (on average 1.2891600419798062) internal successors, (213735), 165890 states have internal predecessors, (213735), 576 states have call successors, (576), 192 states have call predecessors, (576), 192 states have return successors, (864), 528 states have call predecessors, (864), 576 states have call successors, (864) [2021-11-07 01:16:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166563 states to 166563 states and 215175 transitions. [2021-11-07 01:16:14,777 INFO L78 Accepts]: Start accepts. Automaton has 166563 states and 215175 transitions. Word has length 126 [2021-11-07 01:16:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:14,777 INFO L470 AbstractCegarLoop]: Abstraction has 166563 states and 215175 transitions. [2021-11-07 01:16:14,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 01:16:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 166563 states and 215175 transitions. [2021-11-07 01:16:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-07 01:16:14,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:14,893 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:15,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:15,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:15,116 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1041009140, now seen corresponding path program 1 times [2021-11-07 01:16:15,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:15,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202376918] [2021-11-07 01:16:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:15,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:15,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:15,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e1373a-a435-4205-ba76-84b74732c590/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process