./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF --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 32bit --witnessprinter.graph.data.programhash 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:27:19,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:27:19,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:27:19,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:27:19,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:27:19,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:27:19,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:27:19,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:27:19,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:27:19,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:27:19,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:27:19,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:27:19,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:27:19,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:27:19,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:27:19,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:27:19,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:27:19,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:27:19,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:27:19,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:27:19,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:27:19,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:27:19,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:27:19,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:27:19,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:27:19,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:27:19,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:27:19,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:27:19,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:27:19,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:27:19,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:27:19,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:27:19,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:27:19,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:27:19,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:27:19,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:27:19,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:27:19,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:27:19,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:27:19,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:27:19,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:27:19,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:27:19,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:27:19,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:27:19,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:27:19,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:27:19,564 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:27:19,564 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:27:19,565 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:27:19,565 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:27:19,571 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:27:19,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:27:19,573 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:27:19,573 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:27:19,574 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:27:19,574 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:27:19,574 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:27:19,574 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:27:19,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:27:19,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:27:19,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:27:19,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:27:19,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:27:19,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:27:19,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:27:19,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:27:19,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:27:19,577 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:27:19,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:27:19,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:27:19,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:27:19,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:27:19,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:27:19,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:27:19,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:27:19,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:27:19,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:27:19,582 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:27:19,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:27:19,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:27:19,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:27:19,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:27:19,583 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_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2021-11-12 22:27:19,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:27:19,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:27:19,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:27:19,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:27:19,920 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:27:19,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-12 22:27:19,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data/910576f7e/316fbd76bdb040a19c43648a904062a8/FLAG3478c9fce [2021-11-12 22:27:20,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:27:20,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-12 22:27:20,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data/910576f7e/316fbd76bdb040a19c43648a904062a8/FLAG3478c9fce [2021-11-12 22:27:20,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data/910576f7e/316fbd76bdb040a19c43648a904062a8 [2021-11-12 22:27:20,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:27:20,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:27:20,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:20,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:27:20,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:27:20,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:20" (1/1) ... [2021-11-12 22:27:20,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbe69e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:20, skipping insertion in model container [2021-11-12 22:27:20,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:20" (1/1) ... [2021-11-12 22:27:20,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:27:20,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:27:21,446 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-12 22:27:21,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-12 22:27:21,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:27:21,657 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) [2021-11-12 22:27:21,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8b821a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:21, skipping insertion in model container [2021-11-12 22:27:21,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:21,658 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:27:21,660 INFO L158 Benchmark]: Toolchain (without parser) took 757.94ms. Allocated memory is still 119.5MB. Free memory was 88.0MB in the beginning and 80.3MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:27:21,661 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:27:21,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 755.38ms. Allocated memory is still 119.5MB. Free memory was 87.9MB in the beginning and 80.5MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:27:21,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 755.38ms. Allocated memory is still 119.5MB. Free memory was 87.9MB in the beginning and 80.5MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF --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 32bit --witnessprinter.graph.data.programhash 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:27:24,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:27:24,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:27:24,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:27:24,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:27:24,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:27:24,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:27:24,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:27:24,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:27:24,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:27:24,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:27:24,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:27:24,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:27:24,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:27:24,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:27:24,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:27:24,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:27:24,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:27:24,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:27:24,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:27:24,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:27:24,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:27:24,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:27:24,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:27:24,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:27:24,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:27:24,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:27:24,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:27:24,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:27:24,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:27:24,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:27:24,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:27:24,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:27:24,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:27:24,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:27:24,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:27:24,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:27:24,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:27:24,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:27:24,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:27:24,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:27:24,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:27:24,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:27:24,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:27:24,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:27:24,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:27:24,162 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:27:24,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:27:24,162 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:27:24,162 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:27:24,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:27:24,163 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:27:24,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:27:24,164 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:27:24,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:27:24,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:27:24,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:27:24,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:27:24,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:27:24,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:27:24,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:27:24,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:27:24,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:27:24,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:27:24,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:27:24,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:27:24,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:27:24,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:27:24,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:27:24,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:27:24,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:27:24,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:27:24,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:27:24,169 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:27:24,169 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:27:24,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:27:24,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:27:24,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:27:24,170 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_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2021-11-12 22:27:24,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:27:24,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:27:24,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:27:24,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:27:24,631 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:27:24,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-12 22:27:24,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data/d23cbe8f0/6ce19630508f4279855318e22c1fb62a/FLAGf2afaeeea [2021-11-12 22:27:25,480 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:27:25,481 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-12 22:27:25,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data/d23cbe8f0/6ce19630508f4279855318e22c1fb62a/FLAGf2afaeeea [2021-11-12 22:27:25,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/data/d23cbe8f0/6ce19630508f4279855318e22c1fb62a [2021-11-12 22:27:25,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:27:25,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:27:25,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:25,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:27:25,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:27:25,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:25" (1/1) ... [2021-11-12 22:27:25,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d13620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:25, skipping insertion in model container [2021-11-12 22:27:25,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:25" (1/1) ... [2021-11-12 22:27:25,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:27:25,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:27:26,334 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-12 22:27:26,521 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-12 22:27:26,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:27:26,554 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:27:26,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:27:26,614 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-12 22:27:26,716 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-12 22:27:26,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:27:26,756 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:27:26,799 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-12 22:27:26,884 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-12 22:27:26,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:27:26,961 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:27:26,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26 WrapperNode [2021-11-12 22:27:26,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:26,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:27:26,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:27:26,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:27:26,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:27:27,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:27:27,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:27:27,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:27:27,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:27:27,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:27:27,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:27:27,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:27:27,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (1/1) ... [2021-11-12 22:27:27,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:27:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:27:27,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:27:27,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:27:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:27:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:27:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:27:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:27:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-12 22:27:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-12 22:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 22:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:27:27,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:27:34,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:27:34,601 INFO L299 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-12 22:27:34,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:27:34 BoogieIcfgContainer [2021-11-12 22:27:34,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:27:34,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:27:34,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:27:34,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:27:34,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:27:25" (1/3) ... [2021-11-12 22:27:34,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65abb94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:27:34, skipping insertion in model container [2021-11-12 22:27:34,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:26" (2/3) ... [2021-11-12 22:27:34,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65abb94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:27:34, skipping insertion in model container [2021-11-12 22:27:34,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:27:34" (3/3) ... [2021-11-12 22:27:34,619 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2021-11-12 22:27:34,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:27:34,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 22:27:34,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:27:34,695 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 [2021-11-12 22:27:34,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 22:27:34,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 22:27:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 22:27:34,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:34,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:34,727 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-11-12 22:27:34,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:34,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180710880] [2021-11-12 22:27:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:34,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:34,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:34,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:34,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:27:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:34,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:27:34,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:35,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:35,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:35,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180710880] [2021-11-12 22:27:35,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180710880] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:27:35,058 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:27:35,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:27:35,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723191114] [2021-11-12 22:27:35,061 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:35,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:27:35,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:27:35,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:27:35,124 INFO L87 Difference]: Start difference. First operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:35,231 INFO L93 Difference]: Finished difference Result 508 states and 871 transitions. [2021-11-12 22:27:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:27:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 22:27:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:35,256 INFO L225 Difference]: With dead ends: 508 [2021-11-12 22:27:35,256 INFO L226 Difference]: Without dead ends: 222 [2021-11-12 22:27:35,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:27:35,275 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:35,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 5.74ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:27:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-12 22:27:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-11-12 22:27:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 22:27:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-11-12 22:27:35,339 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-11-12 22:27:35,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:35,340 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-11-12 22:27:35,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-11-12 22:27:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 22:27:35,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:35,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:35,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:35,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:35,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:35,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-11-12 22:27:35,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:35,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861070276] [2021-11-12 22:27:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:35,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:35,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:35,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:35,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:27:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:35,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:27:35,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:36,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:36,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:36,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861070276] [2021-11-12 22:27:36,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861070276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:27:36,146 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:27:36,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:27:36,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413753756] [2021-11-12 22:27:36,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:36,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:27:36,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:36,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:27:36,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:27:36,149 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:36,339 INFO L93 Difference]: Finished difference Result 355 states and 499 transitions. [2021-11-12 22:27:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:27:36,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-12 22:27:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:36,342 INFO L225 Difference]: With dead ends: 355 [2021-11-12 22:27:36,342 INFO L226 Difference]: Without dead ends: 231 [2021-11-12 22:27:36,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:27:36,345 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 97 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.34ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.30ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:36,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 953 Invalid, 69 Unknown, 0 Unchecked, 10.34ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 136.30ms Time] [2021-11-12 22:27:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-12 22:27:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2021-11-12 22:27:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 200 states have (on average 1.31) internal successors, (262), 216 states have internal predecessors, (262), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 22:27:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 302 transitions. [2021-11-12 22:27:36,380 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 302 transitions. Word has length 44 [2021-11-12 22:27:36,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:36,381 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 302 transitions. [2021-11-12 22:27:36,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 302 transitions. [2021-11-12 22:27:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 22:27:36,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:36,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:36,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:36,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:36,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1417019415, now seen corresponding path program 1 times [2021-11-12 22:27:36,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:36,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252937962] [2021-11-12 22:27:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:36,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:36,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:36,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:36,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:27:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:36,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:27:36,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:36,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:27:36,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:27:36,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:27:36,965 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 22:27:36,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-12 22:27:37,054 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 22:27:37,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-12 22:27:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:37,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:37,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:37,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252937962] [2021-11-12 22:27:37,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252937962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:27:37,406 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:27:37,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:27:37,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719639821] [2021-11-12 22:27:37,407 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:37,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:27:37,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:37,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:27:37,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:27:37,408 INFO L87 Difference]: Start difference. First operand 225 states and 302 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:42,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:27:44,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:27:49,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:27:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:49,645 INFO L93 Difference]: Finished difference Result 552 states and 724 transitions. [2021-11-12 22:27:49,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:27:49,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-12 22:27:49,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:49,651 INFO L225 Difference]: With dead ends: 552 [2021-11-12 22:27:49,651 INFO L226 Difference]: Without dead ends: 424 [2021-11-12 22:27:49,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:27:49,653 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 216 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11876.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.05ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12154.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:49,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1265 Invalid, 256 Unknown, 0 Unchecked, 9.05ms Time], IncrementalHoareTripleChecker [4 Valid, 250 Invalid, 2 Unknown, 0 Unchecked, 12154.16ms Time] [2021-11-12 22:27:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-12 22:27:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 227. [2021-11-12 22:27:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 202 states have (on average 1.306930693069307) internal successors, (264), 218 states have internal predecessors, (264), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 22:27:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 304 transitions. [2021-11-12 22:27:49,679 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 304 transitions. Word has length 44 [2021-11-12 22:27:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:49,680 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 304 transitions. [2021-11-12 22:27:49,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 304 transitions. [2021-11-12 22:27:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 22:27:49,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:49,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:49,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:49,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:49,897 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash -342228401, now seen corresponding path program 1 times [2021-11-12 22:27:49,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:49,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780654214] [2021-11-12 22:27:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:49,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:49,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:49,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:49,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:27:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:50,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:27:50,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:50,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:50,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:50,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780654214] [2021-11-12 22:27:50,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780654214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:27:50,595 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:27:50,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:27:50,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745263063] [2021-11-12 22:27:50,595 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:50,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:27:50,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:50,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:27:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:27:50,597 INFO L87 Difference]: Start difference. First operand 227 states and 304 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:50,765 INFO L93 Difference]: Finished difference Result 459 states and 616 transitions. [2021-11-12 22:27:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:27:50,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-12 22:27:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:50,772 INFO L225 Difference]: With dead ends: 459 [2021-11-12 22:27:50,774 INFO L226 Difference]: Without dead ends: 236 [2021-11-12 22:27:50,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:27:50,778 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 396 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.24ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 126.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:50,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 619 Invalid, 80 Unknown, 0 Unchecked, 6.24ms Time], IncrementalHoareTripleChecker [44 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 126.43ms Time] [2021-11-12 22:27:50,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-12 22:27:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-11-12 22:27:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 205 states have (on average 1.2634146341463415) internal successors, (259), 221 states have internal predecessors, (259), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 22:27:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 299 transitions. [2021-11-12 22:27:50,806 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 299 transitions. Word has length 61 [2021-11-12 22:27:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:50,809 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 299 transitions. [2021-11-12 22:27:50,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 299 transitions. [2021-11-12 22:27:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 22:27:50,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:50,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:50,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:51,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:51,036 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1231044993, now seen corresponding path program 1 times [2021-11-12 22:27:51,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:51,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442262325] [2021-11-12 22:27:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:51,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:51,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:51,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:51,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:27:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:51,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:27:51,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:51,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:51,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:51,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442262325] [2021-11-12 22:27:51,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442262325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:27:51,989 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:27:51,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-12 22:27:51,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923192140] [2021-11-12 22:27:51,990 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:51,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:27:51,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:27:51,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:27:51,991 INFO L87 Difference]: Start difference. First operand 230 states and 299 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:52,127 INFO L93 Difference]: Finished difference Result 455 states and 593 transitions. [2021-11-12 22:27:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:27:52,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-12 22:27:52,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:52,132 INFO L225 Difference]: With dead ends: 455 [2021-11-12 22:27:52,132 INFO L226 Difference]: Without dead ends: 229 [2021-11-12 22:27:52,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:27:52,137 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 365 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:52,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 612 Invalid, 64 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [23 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 103.10ms Time] [2021-11-12 22:27:52,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-12 22:27:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 224. [2021-11-12 22:27:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 199 states have (on average 1.2512562814070352) internal successors, (249), 215 states have internal predecessors, (249), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 22:27:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 289 transitions. [2021-11-12 22:27:52,166 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 289 transitions. Word has length 61 [2021-11-12 22:27:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:52,169 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 289 transitions. [2021-11-12 22:27:52,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 289 transitions. [2021-11-12 22:27:52,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 22:27:52,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:52,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:52,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:52,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:52,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash 933653125, now seen corresponding path program 1 times [2021-11-12 22:27:52,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:52,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020323949] [2021-11-12 22:27:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:52,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:52,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:52,397 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:52,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:27:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:52,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:27:52,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:53,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:53,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:53,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020323949] [2021-11-12 22:27:53,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020323949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:27:53,391 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:27:53,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:27:53,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174947542] [2021-11-12 22:27:53,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:53,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:27:53,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:27:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:27:53,393 INFO L87 Difference]: Start difference. First operand 224 states and 289 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:54,268 INFO L93 Difference]: Finished difference Result 549 states and 694 transitions. [2021-11-12 22:27:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:27:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-12 22:27:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:54,272 INFO L225 Difference]: With dead ends: 549 [2021-11-12 22:27:54,272 INFO L226 Difference]: Without dead ends: 329 [2021-11-12 22:27:54,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:27:54,273 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 79 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 800.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.61ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 853.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:54,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 563 Invalid, 34 Unknown, 0 Unchecked, 2.61ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 853.63ms Time] [2021-11-12 22:27:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-12 22:27:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2021-11-12 22:27:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 300 states have (on average 1.21) internal successors, (363), 316 states have internal predecessors, (363), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 22:27:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 405 transitions. [2021-11-12 22:27:54,292 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 405 transitions. Word has length 61 [2021-11-12 22:27:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:54,293 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 405 transitions. [2021-11-12 22:27:54,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:27:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 405 transitions. [2021-11-12 22:27:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-12 22:27:54,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:54,295 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:54,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:54,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:54,509 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1452917895, now seen corresponding path program 1 times [2021-11-12 22:27:54,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:54,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723458790] [2021-11-12 22:27:54,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:54,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:54,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:54,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:54,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:27:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:54,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:27:54,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:27:55,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:27:55,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:55,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723458790] [2021-11-12 22:27:55,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723458790] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:27:55,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:27:55,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-12 22:27:55,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029832511] [2021-11-12 22:27:55,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:55,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:27:55,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:27:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:27:55,232 INFO L87 Difference]: Start difference. First operand 326 states and 405 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:27:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:55,304 INFO L93 Difference]: Finished difference Result 616 states and 777 transitions. [2021-11-12 22:27:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:27:55,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2021-11-12 22:27:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:55,310 INFO L225 Difference]: With dead ends: 616 [2021-11-12 22:27:55,310 INFO L226 Difference]: Without dead ends: 329 [2021-11-12 22:27:55,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:27:55,312 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 2 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.25ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:55,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 830 Invalid, 13 Unknown, 0 Unchecked, 6.98ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 39.25ms Time] [2021-11-12 22:27:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-12 22:27:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2021-11-12 22:27:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 302 states have (on average 1.2119205298013245) internal successors, (366), 319 states have internal predecessors, (366), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-12 22:27:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 409 transitions. [2021-11-12 22:27:55,339 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 409 transitions. Word has length 76 [2021-11-12 22:27:55,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:55,341 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 409 transitions. [2021-11-12 22:27:55,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:27:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 409 transitions. [2021-11-12 22:27:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 22:27:55,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:55,343 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:55,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:55,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:55,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash -975375717, now seen corresponding path program 1 times [2021-11-12 22:27:55,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:55,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068117320] [2021-11-12 22:27:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:55,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:55,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:55,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:27:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:55,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:27:55,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:27:56,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:27:56,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:56,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068117320] [2021-11-12 22:27:56,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068117320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:27:56,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [873975169] [2021-11-12 22:27:56,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:56,318 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:27:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:27:56,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:27:56,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 22:27:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:56,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:27:56,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:27:56,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:27:57,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [873975169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:27:57,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840993133] [2021-11-12 22:27:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:57,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:27:57,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:27:57,088 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:27:57,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 22:27:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:57,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:27:57,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:27:57,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:27:57,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840993133] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:27:57,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:27:57,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-12 22:27:57,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399651501] [2021-11-12 22:27:57,723 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:27:57,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:27:57,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:57,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:27:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:27:57,725 INFO L87 Difference]: Start difference. First operand 329 states and 409 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:27:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:58,150 INFO L93 Difference]: Finished difference Result 634 states and 805 transitions. [2021-11-12 22:27:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:27:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2021-11-12 22:27:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:58,154 INFO L225 Difference]: With dead ends: 634 [2021-11-12 22:27:58,154 INFO L226 Difference]: Without dead ends: 344 [2021-11-12 22:27:58,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-12 22:27:58,157 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 41 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.24ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:58,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1919 Invalid, 99 Unknown, 0 Unchecked, 6.24ms Time], IncrementalHoareTripleChecker [27 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 167.64ms Time] [2021-11-12 22:27:58,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-12 22:27:58,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 340. [2021-11-12 22:27:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 312 states have (on average 1.2307692307692308) internal successors, (384), 329 states have internal predecessors, (384), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-12 22:27:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 427 transitions. [2021-11-12 22:27:58,177 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 427 transitions. Word has length 78 [2021-11-12 22:27:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:58,178 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 427 transitions. [2021-11-12 22:27:58,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:27:58,178 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 427 transitions. [2021-11-12 22:27:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-12 22:27:58,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:58,180 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:58,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-12 22:27:58,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:58,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:58,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:27:58,784 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash -589772551, now seen corresponding path program 2 times [2021-11-12 22:27:58,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:58,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364928473] [2021-11-12 22:27:58,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:27:58,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:58,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:58,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:58,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:28:00,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:28:00,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:28:00,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:28:00,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:28:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 22:28:00,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:28:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 22:28:00,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:28:00,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364928473] [2021-11-12 22:28:00,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364928473] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:28:00,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1921380450] [2021-11-12 22:28:00,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:28:00,840 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:28:00,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:28:00,841 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:28:00,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 22:28:05,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:28:05,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:28:05,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:28:05,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:28:05,210 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 22:28:05,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:28:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 22:28:05,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1921380450] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:28:05,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817460082] [2021-11-12 22:28:05,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:28:05,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:28:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:28:05,450 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:28:05,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1999a165-2fbe-44e3-b0e3-5f268824bd81/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process