./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/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_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 15:02:30,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:02:30,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:02:30,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:02:30,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:02:30,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:02:30,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:02:30,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:02:30,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:02:30,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:02:30,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:02:30,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:02:30,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:02:30,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:02:30,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:02:30,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:02:30,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:02:30,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:02:30,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:02:30,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:02:30,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:02:30,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:02:30,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:02:30,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:02:30,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:02:30,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:02:30,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:02:30,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:02:30,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:02:30,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:02:30,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:02:30,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:02:30,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:02:30,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:02:30,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:02:30,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:02:30,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:02:30,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:02:30,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:02:30,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:02:30,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:02:30,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:02:30,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:02:30,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:02:30,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:02:30,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:02:30,551 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:02:30,551 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:02:30,551 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:02:30,552 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:02:30,552 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:02:30,552 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:02:30,552 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:02:30,552 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:02:30,553 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:02:30,553 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:02:30,553 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:02:30,553 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:02:30,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:02:30,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:02:30,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:02:30,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:02:30,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:02:30,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:02:30,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:02:30,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:02:30,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:02:30,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:02:30,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:02:30,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:02:30,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:02:30,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:02:30,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:02:30,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:02:30,558 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:02:30,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:02:30,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:02:30,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:02:30,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:02:30,559 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_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-19 15:02:30,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:02:30,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:02:30,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:02:30,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:02:30,899 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:02:30,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/../../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 [2021-11-19 15:02:30,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data/ea3524642/c98b830bce734a859275fd3583f0fd18/FLAGd7e546831 [2021-11-19 15:02:32,010 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:02:32,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/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 [2021-11-19 15:02:32,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data/ea3524642/c98b830bce734a859275fd3583f0fd18/FLAGd7e546831 [2021-11-19 15:02:32,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data/ea3524642/c98b830bce734a859275fd3583f0fd18 [2021-11-19 15:02:32,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:02:32,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:02:32,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:02:32,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:02:32,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:02:32,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:02:32" (1/1) ... [2021-11-19 15:02:32,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba6d548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:32, skipping insertion in model container [2021-11-19 15:02:32,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:02:32" (1/1) ... [2021-11-19 15:02:32,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:02:32,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:02:33,838 WARN L230 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_23515732-efc5-46bb-93d5-612925d9616b/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] [2021-11-19 15:02:34,502 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:02:34,516 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:02:34,523 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:02:34,533 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:02:34,744 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:02:35,025 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:02:35,026 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:02:35,283 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:02:35,380 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) [2021-11-19 15:02:35,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58005c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:35, skipping insertion in model container [2021-11-19 15:02:35,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:02:35,382 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:02:35,385 INFO L158 Benchmark]: Toolchain (without parser) took 3039.15ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 77.0MB in the beginning and 88.0MB in the end (delta: -11.0MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,386 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:02:35,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3036.60ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 76.6MB in the beginning and 88.0MB in the end (delta: -11.4MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3036.60ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 76.6MB in the beginning and 88.0MB in the end (delta: -11.4MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * 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_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/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_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 15:02:37,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:02:37,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:02:37,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:02:37,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:02:37,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:02:37,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:02:37,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:02:37,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:02:37,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:02:37,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:02:37,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:02:37,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:02:37,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:02:37,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:02:37,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:02:37,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:02:37,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:02:37,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:02:37,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:02:37,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:02:37,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:02:37,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:02:37,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:02:37,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:02:37,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:02:37,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:02:37,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:02:37,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:02:37,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:02:37,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:02:37,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:02:37,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:02:37,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:02:37,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:02:37,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:02:37,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:02:37,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:02:37,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:02:37,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:02:37,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:02:37,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:02:37,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:02:37,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:02:37,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:02:37,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:02:37,887 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:02:37,887 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:02:37,888 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:02:37,888 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:02:37,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:02:37,888 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:02:37,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:02:37,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:02:37,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:02:37,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:02:37,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:02:37,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:02:37,892 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:02:37,892 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:02:37,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:02:37,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:02:37,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:02:37,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:02:37,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:02:37,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:02:37,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:02:37,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:02:37,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:02:37,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:02:37,895 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:02:37,895 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:37,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:02:37,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:02:37,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:02:37,896 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_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-19 15:02:38,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:02:38,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:02:38,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:02:38,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:02:38,345 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:02:38,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/../../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 [2021-11-19 15:02:38,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data/46188ee84/32b0a88224a44a51b9e51fee351fb34e/FLAG57a44f0b9 [2021-11-19 15:02:39,426 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:02:39,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/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 [2021-11-19 15:02:39,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data/46188ee84/32b0a88224a44a51b9e51fee351fb34e/FLAG57a44f0b9 [2021-11-19 15:02:39,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/data/46188ee84/32b0a88224a44a51b9e51fee351fb34e [2021-11-19 15:02:39,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:02:39,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:02:39,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:02:39,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:02:39,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:02:39,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:02:39" (1/1) ... [2021-11-19 15:02:39,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5908a429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:39, skipping insertion in model container [2021-11-19 15:02:39,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:02:39" (1/1) ... [2021-11-19 15:02:39,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:02:40,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:02:41,386 WARN L230 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_23515732-efc5-46bb-93d5-612925d9616b/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] [2021-11-19 15:02:42,924 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:02:43,059 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:02:43,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:02:43,297 WARN L230 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_23515732-efc5-46bb-93d5-612925d9616b/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] [2021-11-19 15:02:43,558 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:02:43,616 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:02:43,802 WARN L230 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_23515732-efc5-46bb-93d5-612925d9616b/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] [2021-11-19 15:02:44,154 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:02:44,567 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:02:44,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44 WrapperNode [2021-11-19 15:02:44,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:02:44,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:02:44,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:02:44,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:02:44,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:44,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:44,971 INFO L137 Inliner]: procedures = 362, calls = 3093, calls flagged for inlining = 175, calls inlined = 164, statements flattened = 6298 [2021-11-19 15:02:44,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:02:44,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:02:44,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:02:44,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:02:44,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:44,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:45,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:45,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:45,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:45,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:45,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:45,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:02:45,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:02:45,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:02:45,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:02:45,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (1/1) ... [2021-11-19 15:02:45,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:02:45,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:02:45,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:02:45,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:02:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:02:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_do_ioctl [2021-11-19 15:02:45,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_do_ioctl [2021-11-19 15:02:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_disable_cam_entry_post [2021-11-19 15:02:45,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_disable_cam_entry_post [2021-11-19 15:02:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:02:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:02:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 15:02:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 15:02:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 15:02:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 15:02:45,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 15:02:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_put [2021-11-19 15:02:45,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_put [2021-11-19 15:02:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_write [2021-11-19 15:02:45,548 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_write [2021-11-19 15:02:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 15:02:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 15:02:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_select_mii [2021-11-19 15:02:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_select_mii [2021-11-19 15:02:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_edmac [2021-11-19 15:02:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_edmac [2021-11-19 15:02:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_read [2021-11-19 15:02:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_read [2021-11-19 15:02:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 15:02:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 15:02:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_write [2021-11-19 15:02:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_write [2021-11-19 15:02:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-19 15:02:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2021-11-19 15:02:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2021-11-19 15:02:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-19 15:02:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-19 15:02:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_disable_cam_entry_table [2021-11-19 15:02:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_disable_cam_entry_table [2021-11-19 15:02:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 15:02:45,553 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 15:02:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_vtag_index [2021-11-19 15:02:45,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_vtag_index [2021-11-19 15:02:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_edtrr_trns [2021-11-19 15:02:45,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_edtrr_trns [2021-11-19 15:02:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 15:02:45,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 15:02:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_giga [2021-11-19 15:02:45,554 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_giga [2021-11-19 15:02:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-19 15:02:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-19 15:02:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 15:02:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 15:02:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 15:02:45,556 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 15:02:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure devm_ioremap_resource [2021-11-19 15:02:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_ioremap_resource [2021-11-19 15:02:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:02:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:02:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure bb_clr [2021-11-19 15:02:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_clr [2021-11-19 15:02:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:02:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:02:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_get_sync [2021-11-19 15:02:45,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_get_sync [2021-11-19 15:02:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_duplex [2021-11-19 15:02:45,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_duplex [2021-11-19 15:02:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 15:02:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 15:02:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 15:02:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 15:02:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_post_reg_offset [2021-11-19 15:02:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_post_reg_offset [2021-11-19 15:02:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset_r8a7740 [2021-11-19 15:02:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset_r8a7740 [2021-11-19 15:02:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 15:02:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 15:02:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset_giga [2021-11-19 15:02:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset_giga [2021-11-19 15:02:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_free_dma_buffer [2021-11-19 15:02:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_free_dma_buffer [2021-11-19 15:02:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:02:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_busy [2021-11-19 15:02:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_busy [2021-11-19 15:02:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_r8a777x [2021-11-19 15:02:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_r8a777x [2021-11-19 15:02:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 15:02:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 15:02:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-19 15:02:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-19 15:02:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-19 15:02:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-19 15:02:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:02:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-19 15:02:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-19 15:02:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb_12 [2021-11-19 15:02:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb_12 [2021-11-19 15:02:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 15:02:45,569 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 15:02:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 15:02:45,570 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 15:02:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-19 15:02:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 15:02:45,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 15:02:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 15:02:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 15:02:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tx_timeout [2021-11-19 15:02:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tx_timeout [2021-11-19 15:02:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-19 15:02:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-19 15:02:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:02:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:02:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 15:02:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_runtime_nop [2021-11-19 15:02:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_runtime_nop [2021-11-19 15:02:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:02:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:02:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:02:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 15:02:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_ring_free [2021-11-19 15:02:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_ring_free [2021-11-19 15:02:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:02:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:02:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:02:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-19 15:02:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-19 15:02:45,587 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_open [2021-11-19 15:02:45,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_open [2021-11-19 15:02:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-19 15:02:45,588 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-19 15:02:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 15:02:45,588 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 15:02:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_multicast_list [2021-11-19 15:02:45,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_multicast_list [2021-11-19 15:02:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 15:02:45,589 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 15:02:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 15:02:45,589 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 15:02:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset [2021-11-19 15:02:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset [2021-11-19 15:02:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 15:02:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 15:02:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_put_sync [2021-11-19 15:02:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_put_sync [2021-11-19 15:02:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 15:02:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 15:02:45,591 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_read_entry [2021-11-19 15:02:45,591 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_read_entry [2021-11-19 15:02:45,591 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_txfree [2021-11-19 15:02:45,591 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_txfree [2021-11-19 15:02:45,591 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_start_xmit [2021-11-19 15:02:45,591 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_start_xmit [2021-11-19 15:02:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-19 15:02:45,592 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-19 15:02:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_rcv_snd_disable [2021-11-19 15:02:45,592 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_rcv_snd_disable [2021-11-19 15:02:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 15:02:45,592 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 15:02:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-19 15:02:45,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-19 15:02:45,593 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 15:02:45,593 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 15:02:45,593 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 15:02:45,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 15:02:45,593 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_close [2021-11-19 15:02:45,593 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_close [2021-11-19 15:02:45,594 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_read [2021-11-19 15:02:45,594 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_read [2021-11-19 15:02:45,594 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_soft_swap [2021-11-19 15:02:45,594 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_soft_swap [2021-11-19 15:02:45,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 15:02:45,594 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 15:02:45,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-19 15:02:45,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-19 15:02:45,595 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_is_rz_fast_ether [2021-11-19 15:02:45,595 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_is_rz_fast_ether [2021-11-19 15:02:45,595 INFO L130 BoogieDeclarations]: Found specification of procedure bb_set [2021-11-19 15:02:45,595 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_set [2021-11-19 15:02:45,595 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_find_entry [2021-11-19 15:02:45,596 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_find_entry [2021-11-19 15:02:45,596 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 15:02:45,596 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 15:02:45,596 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 15:02:45,596 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 15:02:45,596 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_dev_init [2021-11-19 15:02:45,596 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_dev_init [2021-11-19 15:02:45,597 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_stats [2021-11-19 15:02:45,597 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_stats [2021-11-19 15:02:45,597 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_vlan_rx_kill_vid [2021-11-19 15:02:45,597 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_vlan_rx_kill_vid [2021-11-19 15:02:45,597 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_sh7724 [2021-11-19 15:02:45,597 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_sh7724 [2021-11-19 15:02:45,597 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-19 15:02:45,598 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-19 15:02:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 15:02:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_disable [2021-11-19 15:02:45,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_disable [2021-11-19 15:02:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 15:02:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 15:02:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 15:02:45,599 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_adjust_link [2021-11-19 15:02:45,599 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_adjust_link [2021-11-19 15:02:45,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 15:02:45,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 15:02:45,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-19 15:02:45,599 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_vlan_rx_add_vid [2021-11-19 15:02:45,599 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_vlan_rx_add_vid [2021-11-19 15:02:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_ring_init [2021-11-19 15:02:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_ring_init [2021-11-19 15:02:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure __pm_runtime_idle [2021-11-19 15:02:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __pm_runtime_idle [2021-11-19 15:02:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-11-19 15:02:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-11-19 15:02:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:02:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_purge_mcast [2021-11-19 15:02:45,601 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_purge_mcast [2021-11-19 15:02:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 15:02:45,601 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 15:02:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-19 15:02:45,601 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-19 15:02:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:02:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2021-11-19 15:02:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2021-11-19 15:02:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 15:02:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 15:02:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:02:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 15:02:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 15:02:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 15:02:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-19 15:02:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-19 15:02:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:02:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:02:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 15:02:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-19 15:02:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-19 15:02:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_register [2021-11-19 15:02:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_register [2021-11-19 15:02:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_is_gether [2021-11-19 15:02:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_is_gether [2021-11-19 15:02:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-19 15:02:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-19 15:02:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_sh7757 [2021-11-19 15:02:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_sh7757 [2021-11-19 15:02:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_receive_align [2021-11-19 15:02:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_receive_align [2021-11-19 15:02:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_rcv_snd_enable [2021-11-19 15:02:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_rcv_snd_enable [2021-11-19 15:02:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_offset [2021-11-19 15:02:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_offset [2021-11-19 15:02:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_gether [2021-11-19 15:02:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_gether [2021-11-19 15:02:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-19 15:02:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-19 15:02:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 15:02:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 15:02:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 15:02:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 15:02:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-19 15:02:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-19 15:02:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 15:02:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 15:02:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 15:02:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure sh_mdio_release [2021-11-19 15:02:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_mdio_release [2021-11-19 15:02:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_write_entry [2021-11-19 15:02:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_write_entry [2021-11-19 15:02:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_post_bit [2021-11-19 15:02:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_post_bit [2021-11-19 15:02:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:02:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:02:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure free_mdio_bitbang [2021-11-19 15:02:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure free_mdio_bitbang [2021-11-19 15:02:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-19 15:02:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-19 15:02:46,677 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:02:46,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:02:50,467 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 15:05:00,936 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:05:00,959 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:05:00,960 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-19 15:05:00,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:05:00 BoogieIcfgContainer [2021-11-19 15:05:00,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:05:00,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:05:00,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:05:00,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:05:00,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:02:39" (1/3) ... [2021-11-19 15:05:00,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2fed0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:05:00, skipping insertion in model container [2021-11-19 15:05:00,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:44" (2/3) ... [2021-11-19 15:05:00,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2fed0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:05:00, skipping insertion in model container [2021-11-19 15:05:00,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:05:00" (3/3) ... [2021-11-19 15:05:00,974 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 [2021-11-19 15:05:00,980 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:05:00,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:05:01,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:05:01,058 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 [2021-11-19 15:05:01,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:05:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 2349 states, 1612 states have (on average 1.369727047146402) internal successors, (2208), 1690 states have internal predecessors, (2208), 624 states have call successors, (624), 118 states have call predecessors, (624), 117 states have return successors, (605), 579 states have call predecessors, (605), 605 states have call successors, (605) [2021-11-19 15:05:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 15:05:01,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:01,151 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-19 15:05:01,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:01,156 INFO L85 PathProgramCache]: Analyzing trace with hash -265393469, now seen corresponding path program 1 times [2021-11-19 15:05:01,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:01,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433488467] [2021-11-19 15:05:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:01,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:01,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:01,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:01,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:05:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:07,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 3611 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:05:07,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-19 15:05:08,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 15:05:08,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:08,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433488467] [2021-11-19 15:05:08,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433488467] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:08,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:08,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 15:05:08,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101275904] [2021-11-19 15:05:08,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:08,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:05:08,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:05:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:05:08,841 INFO L87 Difference]: Start difference. First operand has 2349 states, 1612 states have (on average 1.369727047146402) internal successors, (2208), 1690 states have internal predecessors, (2208), 624 states have call successors, (624), 118 states have call predecessors, (624), 117 states have return successors, (605), 579 states have call predecessors, (605), 605 states have call successors, (605) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 15:05:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:09,294 INFO L93 Difference]: Finished difference Result 4678 states and 6946 transitions. [2021-11-19 15:05:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:05:09,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-11-19 15:05:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:09,365 INFO L225 Difference]: With dead ends: 4678 [2021-11-19 15:05:09,366 INFO L226 Difference]: Without dead ends: 2304 [2021-11-19 15:05:09,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:05:09,397 INFO L933 BasicCegarLoop]: 3387 mSDtfsCounter, 2 mSDsluCounter, 6767 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10154 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:09,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 10154 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:05:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2021-11-19 15:05:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2304. [2021-11-19 15:05:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1587 states have (on average 1.352236925015753) internal successors, (2146), 1639 states have internal predecessors, (2146), 599 states have call successors, (599), 117 states have call predecessors, (599), 117 states have return successors, (600), 572 states have call predecessors, (600), 598 states have call successors, (600) [2021-11-19 15:05:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3345 transitions. [2021-11-19 15:05:09,627 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3345 transitions. Word has length 87 [2021-11-19 15:05:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:09,628 INFO L470 AbstractCegarLoop]: Abstraction has 2304 states and 3345 transitions. [2021-11-19 15:05:09,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 15:05:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3345 transitions. [2021-11-19 15:05:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 15:05:09,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:09,635 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-19 15:05:09,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:09,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:09,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:09,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1620265873, now seen corresponding path program 1 times [2021-11-19 15:05:09,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:09,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676892212] [2021-11-19 15:05:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:09,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:09,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:09,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:05:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:16,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3621 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:05:16,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 15:05:17,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-19 15:05:17,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:17,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676892212] [2021-11-19 15:05:17,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676892212] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:17,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1015365443] [2021-11-19 15:05:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:17,573 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:17,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:05:17,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:05:17,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-19 15:05:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:19,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 3621 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:05:19,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 15:05:19,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 15:05:19,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1015365443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:19,902 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:05:19,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-19 15:05:19,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853344320] [2021-11-19 15:05:19,904 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:19,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:05:19,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:19,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:05:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:05:19,906 INFO L87 Difference]: Start difference. First operand 2304 states and 3345 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-19 15:05:22,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:05:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:30,082 INFO L93 Difference]: Finished difference Result 9025 states and 13125 transitions. [2021-11-19 15:05:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:05:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 89 [2021-11-19 15:05:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:30,150 INFO L225 Difference]: With dead ends: 9025 [2021-11-19 15:05:30,150 INFO L226 Difference]: Without dead ends: 6747 [2021-11-19 15:05:30,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:05:30,168 INFO L933 BasicCegarLoop]: 4503 mSDtfsCounter, 8551 mSDsluCounter, 5378 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 1151 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8551 SdHoareTripleChecker+Valid, 9881 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1151 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:30,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8551 Valid, 9881 Invalid, 2336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1151 Valid, 1184 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 15:05:30,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6747 states. [2021-11-19 15:05:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6747 to 6747. [2021-11-19 15:05:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6747 states, 4652 states have (on average 1.3589853826311264) internal successors, (6322), 4808 states have internal predecessors, (6322), 1743 states have call successors, (1743), 349 states have call predecessors, (1743), 351 states have return successors, (1748), 1664 states have call predecessors, (1748), 1742 states have call successors, (1748) [2021-11-19 15:05:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6747 states to 6747 states and 9813 transitions. [2021-11-19 15:05:30,548 INFO L78 Accepts]: Start accepts. Automaton has 6747 states and 9813 transitions. Word has length 89 [2021-11-19 15:05:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:30,551 INFO L470 AbstractCegarLoop]: Abstraction has 6747 states and 9813 transitions. [2021-11-19 15:05:30,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-19 15:05:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 6747 states and 9813 transitions. [2021-11-19 15:05:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-19 15:05:30,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:30,560 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-19 15:05:30,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:30,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 15:05:30,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:30,976 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash -572477133, now seen corresponding path program 1 times [2021-11-19 15:05:30,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:30,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904919662] [2021-11-19 15:05:30,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:30,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:30,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:30,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:30,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:05:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:37,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 3656 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:05:37,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 15:05:38,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-19 15:05:38,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:38,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904919662] [2021-11-19 15:05:38,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904919662] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:38,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1550352335] [2021-11-19 15:05:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:38,581 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:38,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:05:38,586 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:05:38,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 15:05:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:40,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 3656 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:05:40,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 15:05:40,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-19 15:05:41,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1550352335] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:41,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:05:41,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 13 [2021-11-19 15:05:41,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221843594] [2021-11-19 15:05:41,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:41,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:05:41,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:41,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:05:41,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:05:41,168 INFO L87 Difference]: Start difference. First operand 6747 states and 9813 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 15:05:42,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:42,437 INFO L93 Difference]: Finished difference Result 20186 states and 29543 transitions. [2021-11-19 15:05:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:05:42,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 99 [2021-11-19 15:05:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:42,560 INFO L225 Difference]: With dead ends: 20186 [2021-11-19 15:05:42,560 INFO L226 Difference]: Without dead ends: 13459 [2021-11-19 15:05:42,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:05:42,605 INFO L933 BasicCegarLoop]: 4210 mSDtfsCounter, 3299 mSDsluCounter, 20167 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3299 SdHoareTripleChecker+Valid, 24377 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:42,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3299 Valid, 24377 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 15:05:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13459 states. [2021-11-19 15:05:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13459 to 13447. [2021-11-19 15:05:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13447 states, 9270 states have (on average 1.3593311758360302) internal successors, (12601), 9582 states have internal predecessors, (12601), 3474 states have call successors, (3474), 697 states have call predecessors, (3474), 702 states have return successors, (3593), 3317 states have call predecessors, (3593), 3473 states have call successors, (3593) [2021-11-19 15:05:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13447 states to 13447 states and 19668 transitions. [2021-11-19 15:05:43,354 INFO L78 Accepts]: Start accepts. Automaton has 13447 states and 19668 transitions. Word has length 99 [2021-11-19 15:05:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:43,354 INFO L470 AbstractCegarLoop]: Abstraction has 13447 states and 19668 transitions. [2021-11-19 15:05:43,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 15:05:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13447 states and 19668 transitions. [2021-11-19 15:05:43,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-19 15:05:43,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:43,396 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:05:43,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:43,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-19 15:05:43,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:43,812 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -702098706, now seen corresponding path program 1 times [2021-11-19 15:05:43,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:43,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676469715] [2021-11-19 15:05:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:43,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:43,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:43,819 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:43,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:05:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:50,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 3980 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:05:50,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 15:05:51,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-19 15:05:52,263 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:52,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676469715] [2021-11-19 15:05:52,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676469715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:52,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2071503528] [2021-11-19 15:05:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:52,264 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:52,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:05:52,275 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:05:52,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 15:05:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:54,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 3980 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:05:54,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-19 15:05:54,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-19 15:05:55,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2071503528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:55,312 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:05:55,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-19 15:05:55,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162502369] [2021-11-19 15:05:55,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:55,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:05:55,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:05:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:05:55,314 INFO L87 Difference]: Start difference. First operand 13447 states and 19668 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 15:05:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:56,635 INFO L93 Difference]: Finished difference Result 39217 states and 57215 transitions. [2021-11-19 15:05:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:05:56,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 220 [2021-11-19 15:05:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:56,855 INFO L225 Difference]: With dead ends: 39217 [2021-11-19 15:05:56,855 INFO L226 Difference]: Without dead ends: 25796 [2021-11-19 15:05:56,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:05:56,943 INFO L933 BasicCegarLoop]: 3892 mSDtfsCounter, 3037 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 7159 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:56,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3037 Valid, 7159 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:05:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25796 states. [2021-11-19 15:05:58,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25796 to 25783. [2021-11-19 15:05:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25783 states, 17682 states have (on average 1.3543151227236738) internal successors, (23947), 18302 states have internal predecessors, (23947), 6696 states have call successors, (6696), 1393 states have call predecessors, (6696), 1404 states have return successors, (6923), 6381 states have call predecessors, (6923), 6695 states have call successors, (6923) [2021-11-19 15:05:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25783 states to 25783 states and 37566 transitions. [2021-11-19 15:05:58,715 INFO L78 Accepts]: Start accepts. Automaton has 25783 states and 37566 transitions. Word has length 220 [2021-11-19 15:05:58,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:58,716 INFO L470 AbstractCegarLoop]: Abstraction has 25783 states and 37566 transitions. [2021-11-19 15:05:58,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 15:05:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 25783 states and 37566 transitions. [2021-11-19 15:05:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-19 15:05:58,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:58,763 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:05:58,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:59,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-19 15:05:59,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:59,188 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1918589752, now seen corresponding path program 1 times [2021-11-19 15:05:59,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:59,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120182961] [2021-11-19 15:05:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:59,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:59,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:59,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:59,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:06:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:06,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:06:06,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-19 15:06:06,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-19 15:06:07,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:07,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120182961] [2021-11-19 15:06:07,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120182961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:07,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1847820602] [2021-11-19 15:06:07,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:07,737 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:07,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:06:07,738 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:06:07,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:06:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:09,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:06:09,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-19 15:06:10,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-19 15:06:10,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1847820602] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:06:10,972 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:06:10,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-19 15:06:10,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649723162] [2021-11-19 15:06:10,973 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:06:10,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:06:10,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:10,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:06:10,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:06:10,975 INFO L87 Difference]: Start difference. First operand 25783 states and 37566 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-19 15:06:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:06:12,990 INFO L93 Difference]: Finished difference Result 75317 states and 109450 transitions. [2021-11-19 15:06:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:06:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 265 [2021-11-19 15:06:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:06:13,430 INFO L225 Difference]: With dead ends: 75317 [2021-11-19 15:06:13,430 INFO L226 Difference]: Without dead ends: 49560 [2021-11-19 15:06:13,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:06:13,541 INFO L933 BasicCegarLoop]: 3880 mSDtfsCounter, 3070 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3070 SdHoareTripleChecker+Valid, 7070 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:06:13,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3070 Valid, 7070 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:06:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49560 states. [2021-11-19 15:06:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49560 to 49491. [2021-11-19 15:06:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49491 states, 33890 states have (on average 1.350250811448805) internal successors, (45760), 35154 states have internal predecessors, (45760), 12828 states have call successors, (12828), 2749 states have call predecessors, (12828), 2772 states have return successors, (13253), 12175 states have call predecessors, (13253), 12827 states have call successors, (13253) [2021-11-19 15:06:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49491 states to 49491 states and 71841 transitions. [2021-11-19 15:06:16,456 INFO L78 Accepts]: Start accepts. Automaton has 49491 states and 71841 transitions. Word has length 265 [2021-11-19 15:06:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:06:16,456 INFO L470 AbstractCegarLoop]: Abstraction has 49491 states and 71841 transitions. [2021-11-19 15:06:16,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-19 15:06:16,457 INFO L276 IsEmpty]: Start isEmpty. Operand 49491 states and 71841 transitions. [2021-11-19 15:06:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-19 15:06:16,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:16,499 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:16,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:16,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 15:06:16,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:06:16,916 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 665421382, now seen corresponding path program 1 times [2021-11-19 15:06:16,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:16,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236183619] [2021-11-19 15:06:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:16,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:16,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:16,923 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:16,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:06:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:24,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 4081 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:06:24,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-19 15:06:24,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:25,611 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-19 15:06:25,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:25,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236183619] [2021-11-19 15:06:25,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236183619] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:25,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [475536151] [2021-11-19 15:06:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:25,612 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:25,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:06:25,613 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:06:25,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 15:06:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 4081 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:06:27,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-19 15:06:28,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-19 15:06:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [475536151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:06:29,105 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:06:29,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-19 15:06:29,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609853613] [2021-11-19 15:06:29,106 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:06:29,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:06:29,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:06:29,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:06:29,108 INFO L87 Difference]: Start difference. First operand 49491 states and 71841 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-19 15:06:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:06:31,128 INFO L93 Difference]: Finished difference Result 93736 states and 135776 transitions. [2021-11-19 15:06:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:06:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 264 [2021-11-19 15:06:31,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:06:31,373 INFO L225 Difference]: With dead ends: 93736 [2021-11-19 15:06:31,374 INFO L226 Difference]: Without dead ends: 44271 [2021-11-19 15:06:31,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1045 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:06:31,568 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 3185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3185 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:06:31,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3185 Valid, 3204 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:06:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44271 states. [2021-11-19 15:06:34,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44271 to 44271. [2021-11-19 15:06:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44271 states, 30290 states have (on average 1.34572466160449) internal successors, (40762), 31512 states have internal predecessors, (40762), 11424 states have call successors, (11424), 2533 states have call predecessors, (11424), 2556 states have return successors, (11762), 10783 states have call predecessors, (11762), 11423 states have call successors, (11762) [2021-11-19 15:06:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44271 states to 44271 states and 63948 transitions. [2021-11-19 15:06:34,287 INFO L78 Accepts]: Start accepts. Automaton has 44271 states and 63948 transitions. Word has length 264 [2021-11-19 15:06:34,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:06:34,287 INFO L470 AbstractCegarLoop]: Abstraction has 44271 states and 63948 transitions. [2021-11-19 15:06:34,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-19 15:06:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 44271 states and 63948 transitions. [2021-11-19 15:06:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-19 15:06:34,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:34,323 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:34,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:34,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:34,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:06:34,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1603337306, now seen corresponding path program 1 times [2021-11-19 15:06:34,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:34,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056792982] [2021-11-19 15:06:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:34,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:34,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:34,749 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:34,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:06:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:42,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 4098 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:06:42,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-19 15:06:42,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-19 15:06:43,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:43,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056792982] [2021-11-19 15:06:43,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056792982] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:43,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1532310354] [2021-11-19 15:06:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:43,654 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:43,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:06:43,657 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:06:43,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:06:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:45,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 4098 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:06:45,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-11-19 15:06:46,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-19 15:06:47,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1532310354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:06:47,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:06:47,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-19 15:06:47,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104384020] [2021-11-19 15:06:47,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:06:47,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:06:47,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:47,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:06:47,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:06:47,061 INFO L87 Difference]: Start difference. First operand 44271 states and 63948 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-19 15:06:50,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:06:50,064 INFO L93 Difference]: Finished difference Result 131297 states and 189548 transitions. [2021-11-19 15:06:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:06:50,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 256 [2021-11-19 15:06:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:06:50,694 INFO L225 Difference]: With dead ends: 131297 [2021-11-19 15:06:50,695 INFO L226 Difference]: Without dead ends: 87052 [2021-11-19 15:06:50,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 1013 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:06:50,947 INFO L933 BasicCegarLoop]: 4000 mSDtfsCounter, 3091 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 7153 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:06:50,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3091 Valid, 7153 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 15:06:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87052 states. [2021-11-19 15:06:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87052 to 87027. [2021-11-19 15:06:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87027 states, 59522 states have (on average 1.345384899700951) internal successors, (80080), 61970 states have internal predecessors, (80080), 22440 states have call successors, (22440), 5017 states have call predecessors, (22440), 5064 states have return successors, (23069), 21155 states have call predecessors, (23069), 22439 states have call successors, (23069) [2021-11-19 15:06:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87027 states to 87027 states and 125589 transitions. [2021-11-19 15:06:55,478 INFO L78 Accepts]: Start accepts. Automaton has 87027 states and 125589 transitions. Word has length 256 [2021-11-19 15:06:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:06:55,479 INFO L470 AbstractCegarLoop]: Abstraction has 87027 states and 125589 transitions. [2021-11-19 15:06:55,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-19 15:06:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 87027 states and 125589 transitions. [2021-11-19 15:06:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-19 15:06:55,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:55,581 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:55,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:55,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 15:06:55,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:06:55,996 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash 926315558, now seen corresponding path program 1 times [2021-11-19 15:06:56,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:56,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323078220] [2021-11-19 15:06:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:56,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:56,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:56,003 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:56,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:07:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:03,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 4287 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:07:03,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 547 proven. 1 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2021-11-19 15:07:04,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-19 15:07:05,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:07:05,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323078220] [2021-11-19 15:07:05,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323078220] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:07:05,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [133875773] [2021-11-19 15:07:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:05,760 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:07:05,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:07:05,773 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:07:05,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 15:07:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:07,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 4287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:07:07,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2021-11-19 15:07:08,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-11-19 15:07:09,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [133875773] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:07:09,193 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:07:09,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-19 15:07:09,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134631906] [2021-11-19 15:07:09,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:07:09,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:07:09,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:07:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:07:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:07:09,196 INFO L87 Difference]: Start difference. First operand 87027 states and 125589 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-19 15:07:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:07:12,373 INFO L93 Difference]: Finished difference Result 174124 states and 251309 transitions. [2021-11-19 15:07:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:07:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 328 [2021-11-19 15:07:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:07:12,872 INFO L225 Difference]: With dead ends: 174124 [2021-11-19 15:07:12,873 INFO L226 Difference]: Without dead ends: 87123 [2021-11-19 15:07:13,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1309 GetRequests, 1300 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:07:13,399 INFO L933 BasicCegarLoop]: 3202 mSDtfsCounter, 2 mSDsluCounter, 6397 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9599 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:07:13,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 9599 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:07:13,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87123 states. [2021-11-19 15:07:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87123 to 87099. [2021-11-19 15:07:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87099 states, 59594 states have (on average 1.3449676141893478) internal successors, (80152), 62042 states have internal predecessors, (80152), 22440 states have call successors, (22440), 5017 states have call predecessors, (22440), 5064 states have return successors, (23069), 21155 states have call predecessors, (23069), 22439 states have call successors, (23069) [2021-11-19 15:07:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87099 states to 87099 states and 125661 transitions. [2021-11-19 15:07:17,499 INFO L78 Accepts]: Start accepts. Automaton has 87099 states and 125661 transitions. Word has length 328 [2021-11-19 15:07:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:07:17,500 INFO L470 AbstractCegarLoop]: Abstraction has 87099 states and 125661 transitions. [2021-11-19 15:07:17,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-19 15:07:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 87099 states and 125661 transitions. [2021-11-19 15:07:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-19 15:07:17,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:07:17,574 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:07:17,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:07:17,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:07:17,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:07:17,995 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:07:17,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:07:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1116766754, now seen corresponding path program 1 times [2021-11-19 15:07:17,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:07:17,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998599576] [2021-11-19 15:07:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:18,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:07:18,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:07:18,000 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:07:18,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:07:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:25,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:07:25,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 547 proven. 1 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2021-11-19 15:07:26,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-19 15:07:27,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:07:27,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998599576] [2021-11-19 15:07:27,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998599576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:07:27,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [661312490] [2021-11-19 15:07:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:27,408 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:07:27,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:07:27,416 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:07:27,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 15:07:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:29,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:07:29,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2021-11-19 15:07:30,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-11-19 15:07:30,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [661312490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:07:30,747 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:07:30,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-19 15:07:30,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720320559] [2021-11-19 15:07:30,748 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:07:30,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:07:30,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:07:30,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:07:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:07:30,749 INFO L87 Difference]: Start difference. First operand 87099 states and 125661 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-19 15:07:33,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:07:33,747 INFO L93 Difference]: Finished difference Result 174196 states and 251333 transitions. [2021-11-19 15:07:33,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:07:33,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 328 [2021-11-19 15:07:33,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:07:34,507 INFO L225 Difference]: With dead ends: 174196 [2021-11-19 15:07:34,507 INFO L226 Difference]: Without dead ends: 87123 [2021-11-19 15:07:34,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1301 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:07:34,727 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 0 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6403 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:07:34,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6403 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:07:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87123 states. [2021-11-19 15:07:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87123 to 87123. [2021-11-19 15:07:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87123 states, 59618 states have (on average 1.3448287429970813) internal successors, (80176), 62066 states have internal predecessors, (80176), 22440 states have call successors, (22440), 5017 states have call predecessors, (22440), 5064 states have return successors, (23069), 21155 states have call predecessors, (23069), 22439 states have call successors, (23069) [2021-11-19 15:07:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87123 states to 87123 states and 125685 transitions. [2021-11-19 15:07:38,367 INFO L78 Accepts]: Start accepts. Automaton has 87123 states and 125685 transitions. Word has length 328 [2021-11-19 15:07:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:07:38,368 INFO L470 AbstractCegarLoop]: Abstraction has 87123 states and 125685 transitions. [2021-11-19 15:07:38,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-19 15:07:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 87123 states and 125685 transitions. [2021-11-19 15:07:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-19 15:07:38,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:07:38,445 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:07:38,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:07:38,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 15:07:38,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:07:38,867 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:07:38,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:07:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash 493485152, now seen corresponding path program 1 times [2021-11-19 15:07:38,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:07:38,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107701085] [2021-11-19 15:07:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:38,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:07:38,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:07:38,873 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:07:38,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:07:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:46,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 4293 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:07:46,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 547 proven. 1 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2021-11-19 15:07:47,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-19 15:07:48,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:07:48,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107701085] [2021-11-19 15:07:48,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107701085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:07:48,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1434694421] [2021-11-19 15:07:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:48,057 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:07:48,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:07:48,058 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:07:48,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23515732-efc5-46bb-93d5-612925d9616b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 15:07:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:50,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 4293 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:07:50,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-19 15:07:50,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2021-11-19 15:07:51,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1434694421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:07:51,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:07:51,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-19 15:07:51,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66189383] [2021-11-19 15:07:51,566 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:07:51,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:07:51,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:07:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:07:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:07:51,568 INFO L87 Difference]: Start difference. First operand 87123 states and 125685 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-19 15:07:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:07:54,365 INFO L93 Difference]: Finished difference Result 130820 states and 189443 transitions. [2021-11-19 15:07:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:07:54,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 328 [2021-11-19 15:07:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:07:54,839 INFO L225 Difference]: With dead ends: 130820 [2021-11-19 15:07:54,840 INFO L226 Difference]: Without dead ends: 87219 [2021-11-19 15:07:55,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1301 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:07:55,033 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 5 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6400 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:07:55,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6400 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:07:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87219 states.