./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/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 fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:32:25,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:32:25,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:32:25,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:32:25,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:32:25,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:32:25,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:32:25,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:32:25,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:32:25,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:32:25,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:32:25,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:32:25,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:32:25,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:32:25,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:32:25,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:32:25,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:32:25,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:32:25,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:32:25,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:32:25,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:32:25,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:32:25,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:32:25,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:32:25,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:32:25,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:32:25,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:32:25,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:32:25,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:32:25,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:32:25,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:32:25,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:32:25,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:32:25,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:32:25,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:32:25,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:32:25,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:32:25,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:32:25,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:32:25,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:32:25,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:32:25,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:32:26,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:32:26,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:32:26,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:32:26,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:32:26,002 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:32:26,002 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:32:26,003 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:32:26,003 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:32:26,003 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:32:26,003 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:32:26,003 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:32:26,003 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:32:26,004 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:32:26,004 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:32:26,004 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:32:26,004 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:32:26,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:32:26,005 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:32:26,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:32:26,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:32:26,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:32:26,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:32:26,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:32:26,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:32:26,006 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:32:26,007 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:32:26,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:32:26,007 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:32:26,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:32:26,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:32:26,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:32:26,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:26,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:32:26,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:32:26,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:32:26,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:32:26,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:32:26,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:32:26,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:32:26,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:32:26,009 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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae [2021-11-13 02:32:26,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:32:26,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:32:26,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:32:26,298 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:32:26,299 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:32:26,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2021-11-13 02:32:26,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data/e765143e3/934b7e20ff21470fb4f5ee622d3778cb/FLAG12dfb8a74 [2021-11-13 02:32:27,068 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:32:27,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2021-11-13 02:32:27,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data/e765143e3/934b7e20ff21470fb4f5ee622d3778cb/FLAG12dfb8a74 [2021-11-13 02:32:27,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data/e765143e3/934b7e20ff21470fb4f5ee622d3778cb [2021-11-13 02:32:27,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:32:27,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:32:27,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:27,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:32:27,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:32:27,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:27" (1/1) ... [2021-11-13 02:32:27,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7877321c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:27, skipping insertion in model container [2021-11-13 02:32:27,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:27" (1/1) ... [2021-11-13 02:32:27,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:32:27,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:32:27,871 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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2021-11-13 02:32:28,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:28,221 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) [2021-11-13 02:32:28,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@18df658c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:28, skipping insertion in model container [2021-11-13 02:32:28,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:28,222 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:32:28,224 INFO L158 Benchmark]: Toolchain (without parser) took 961.62ms. Allocated memory is still 138.4MB. Free memory was 105.3MB in the beginning and 92.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:32:28,225 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory was 53.7MB in the beginning and 53.6MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:32:28,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 956.49ms. Allocated memory is still 138.4MB. Free memory was 104.9MB in the beginning and 92.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:32:28,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory was 53.7MB in the beginning and 53.6MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 956.49ms. Allocated memory is still 138.4MB. Free memory was 104.9MB in the beginning and 92.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/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 fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:32:30,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:32:30,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:32:30,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:32:30,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:32:30,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:32:30,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:32:30,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:32:30,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:32:30,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:32:30,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:32:30,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:32:30,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:32:30,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:32:30,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:32:30,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:32:30,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:32:30,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:32:30,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:32:30,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:32:30,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:32:30,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:32:30,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:32:30,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:32:30,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:32:30,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:32:30,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:32:30,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:32:30,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:32:30,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:32:30,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:32:30,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:32:30,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:32:30,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:32:30,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:32:30,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:32:30,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:32:30,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:32:30,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:32:30,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:32:30,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:32:30,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:32:30,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:32:30,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:32:30,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:32:30,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:32:30,749 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:32:30,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:32:30,749 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:32:30,749 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:32:30,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:32:30,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:32:30,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:32:30,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:32:30,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:32:30,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:32:30,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:32:30,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:32:30,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:32:30,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:32:30,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:32:30,754 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:32:30,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:32:30,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:32:30,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:32:30,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:32:30,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:32:30,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:32:30,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:32:30,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:30,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:32:30,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:32:30,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:32:30,757 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:32:30,757 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:32:30,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:32:30,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:32:30,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:32:30,758 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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae [2021-11-13 02:32:31,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:32:31,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:32:31,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:32:31,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:32:31,150 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:32:31,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2021-11-13 02:32:31,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data/7a3e8bc5f/98f3c1ed992d48dfa4ac2e372eabd2ef/FLAG35d5bfdbf [2021-11-13 02:32:32,003 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:32:32,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2021-11-13 02:32:32,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data/7a3e8bc5f/98f3c1ed992d48dfa4ac2e372eabd2ef/FLAG35d5bfdbf [2021-11-13 02:32:32,138 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/data/7a3e8bc5f/98f3c1ed992d48dfa4ac2e372eabd2ef [2021-11-13 02:32:32,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:32:32,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:32:32,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:32,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:32:32,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:32:32,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:32" (1/1) ... [2021-11-13 02:32:32,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121b62ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:32, skipping insertion in model container [2021-11-13 02:32:32,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:32" (1/1) ... [2021-11-13 02:32:32,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:32:32,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:32:32,906 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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2021-11-13 02:32:33,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:33,321 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:32:33,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:32:33,358 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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2021-11-13 02:32:33,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:33,477 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:32:33,502 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_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2021-11-13 02:32:33,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:33,667 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:32:33,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33 WrapperNode [2021-11-13 02:32:33,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:33,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:32:33,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:32:33,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:32:33,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:33,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:33,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:32:33,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:32:33,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:32:33,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:32:33,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:33,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:33,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:33,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:33,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:33,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:33,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:34,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:32:34,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:32:34,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:32:34,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:32:34,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (1/1) ... [2021-11-13 02:32:34,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:34,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:32:34,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:32:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:32:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 02:32:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 02:32:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:32:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 02:32:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 02:32:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:32:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:32:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:32:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:32:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:32:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 02:32:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:32:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:32:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:32:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:32:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:32:34,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:32:48,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:32:48,367 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-11-13 02:32:48,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:48 BoogieIcfgContainer [2021-11-13 02:32:48,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:32:48,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:32:48,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:32:48,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:32:48,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:32:32" (1/3) ... [2021-11-13 02:32:48,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4417d72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:48, skipping insertion in model container [2021-11-13 02:32:48,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:33" (2/3) ... [2021-11-13 02:32:48,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4417d72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:48, skipping insertion in model container [2021-11-13 02:32:48,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:48" (3/3) ... [2021-11-13 02:32:48,378 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-3.i [2021-11-13 02:32:48,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:32:48,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:32:48,453 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:48,461 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 [2021-11-13 02:32:48,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:32:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 459 states have (on average 1.7124183006535947) internal successors, (786), 464 states have internal predecessors, (786), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-13 02:32:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 02:32:48,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:48,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:48,500 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1002051803, now seen corresponding path program 1 times [2021-11-13 02:32:48,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:48,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042620191] [2021-11-13 02:32:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:48,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:48,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:48,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:48,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:32:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:48,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:32:48,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:48,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:48,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:48,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042620191] [2021-11-13 02:32:48,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042620191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:48,924 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:48,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:32:48,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448468921] [2021-11-13 02:32:48,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:48,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:32:48,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:32:48,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:32:48,965 INFO L87 Difference]: Start difference. First operand has 478 states, 459 states have (on average 1.7124183006535947) internal successors, (786), 464 states have internal predecessors, (786), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-13 02:32:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:49,112 INFO L93 Difference]: Finished difference Result 954 states and 1634 transitions. [2021-11-13 02:32:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:32:49,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 13 [2021-11-13 02:32:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:49,131 INFO L225 Difference]: With dead ends: 954 [2021-11-13 02:32:49,132 INFO L226 Difference]: Without dead ends: 424 [2021-11-13 02:32:49,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:32:49,143 INFO L933 BasicCegarLoop]: 638 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, 638 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:49,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 8.01ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:32:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-13 02:32:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-11-13 02:32:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 406 states have (on average 1.3251231527093597) internal successors, (538), 411 states have internal predecessors, (538), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:32:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 565 transitions. [2021-11-13 02:32:49,227 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 565 transitions. Word has length 13 [2021-11-13 02:32:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:49,228 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 565 transitions. [2021-11-13 02:32:49,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-13 02:32:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 565 transitions. [2021-11-13 02:32:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 02:32:49,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:49,233 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] [2021-11-13 02:32:49,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:49,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:32:49,447 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1116117503, now seen corresponding path program 1 times [2021-11-13 02:32:49,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:49,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783884698] [2021-11-13 02:32:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:49,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:49,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:49,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:49,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:32:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:49,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:32:49,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:50,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:50,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:50,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783884698] [2021-11-13 02:32:50,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783884698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:50,191 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:50,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 02:32:50,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493593528] [2021-11-13 02:32:50,192 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:50,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:32:50,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:32:50,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:32:50,200 INFO L87 Difference]: Start difference. First operand 424 states and 565 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-11-13 02:32:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:50,418 INFO L93 Difference]: Finished difference Result 670 states and 899 transitions. [2021-11-13 02:32:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:50,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 48 [2021-11-13 02:32:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:50,425 INFO L225 Difference]: With dead ends: 670 [2021-11-13 02:32:50,425 INFO L226 Difference]: Without dead ends: 428 [2021-11-13 02:32:50,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:32:50,431 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 289 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.91ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:50,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 1586 Invalid, 68 Unknown, 0 Unchecked, 9.91ms Time], IncrementalHoareTripleChecker [32 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 151.79ms Time] [2021-11-13 02:32:50,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-13 02:32:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2021-11-13 02:32:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 409 states have (on average 1.3031784841075795) internal successors, (533), 414 states have internal predecessors, (533), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:32:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 560 transitions. [2021-11-13 02:32:50,484 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 560 transitions. Word has length 48 [2021-11-13 02:32:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:50,484 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 560 transitions. [2021-11-13 02:32:50,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-11-13 02:32:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 560 transitions. [2021-11-13 02:32:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 02:32:50,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:50,495 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] [2021-11-13 02:32:50,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:50,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:32:50,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:50,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash 844272943, now seen corresponding path program 1 times [2021-11-13 02:32:50,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:50,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676154447] [2021-11-13 02:32:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:50,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:50,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:50,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:32:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:51,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:32:51,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:51,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:51,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:51,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676154447] [2021-11-13 02:32:51,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676154447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:51,524 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:51,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 02:32:51,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616169158] [2021-11-13 02:32:51,525 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:51,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:32:51,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:32:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:32:51,527 INFO L87 Difference]: Start difference. First operand 427 states and 560 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-11-13 02:32:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:51,672 INFO L93 Difference]: Finished difference Result 643 states and 849 transitions. [2021-11-13 02:32:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:51,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 48 [2021-11-13 02:32:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:51,676 INFO L225 Difference]: With dead ends: 643 [2021-11-13 02:32:51,676 INFO L226 Difference]: Without dead ends: 421 [2021-11-13 02:32:51,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:32:51,679 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 270 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.31ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.69ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:51,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2108 Invalid, 69 Unknown, 0 Unchecked, 6.31ms Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 114.69ms Time] [2021-11-13 02:32:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-13 02:32:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-13 02:32:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 403 states have (on average 1.2977667493796525) internal successors, (523), 408 states have internal predecessors, (523), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:32:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 550 transitions. [2021-11-13 02:32:51,698 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 550 transitions. Word has length 48 [2021-11-13 02:32:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:51,698 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 550 transitions. [2021-11-13 02:32:51,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-11-13 02:32:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 550 transitions. [2021-11-13 02:32:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 02:32:51,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:51,700 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] [2021-11-13 02:32:51,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:51,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:32:51,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:51,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:51,914 INFO L85 PathProgramCache]: Analyzing trace with hash -857755915, now seen corresponding path program 1 times [2021-11-13 02:32:51,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:51,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463423386] [2021-11-13 02:32:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:51,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:51,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:51,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:51,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:32:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:52,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:32:52,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:52,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:32:52,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:32:52,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:32:52,402 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 02:32:52,403 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 [2021-11-13 02:32:52,482 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 02:32:52,483 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 [2021-11-13 02:32:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:52,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:52,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:52,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463423386] [2021-11-13 02:32:52,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463423386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:52,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:52,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:32:52,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175935964] [2021-11-13 02:32:52,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:52,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:32:52,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:32:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:32:52,804 INFO L87 Difference]: Start difference. First operand 421 states and 550 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-11-13 02:32:59,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:33:01,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:33:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:06,870 INFO L93 Difference]: Finished difference Result 739 states and 967 transitions. [2021-11-13 02:33:06,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:33:06,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 48 [2021-11-13 02:33:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:06,876 INFO L225 Difference]: With dead ends: 739 [2021-11-13 02:33:06,876 INFO L226 Difference]: Without dead ends: 496 [2021-11-13 02:33:06,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:33:06,879 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 379 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13528.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.64ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13977.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:06,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 1911 Invalid, 551 Unknown, 0 Unchecked, 11.64ms Time], IncrementalHoareTripleChecker [4 Valid, 545 Invalid, 2 Unknown, 0 Unchecked, 13977.36ms Time] [2021-11-13 02:33:06,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-13 02:33:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 423. [2021-11-13 02:33:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 405 states have (on average 1.2962962962962963) internal successors, (525), 410 states have internal predecessors, (525), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:33:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 552 transitions. [2021-11-13 02:33:06,900 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 552 transitions. Word has length 48 [2021-11-13 02:33:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:06,900 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 552 transitions. [2021-11-13 02:33:06,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-11-13 02:33:06,901 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 552 transitions. [2021-11-13 02:33:06,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 02:33:06,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:06,903 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:06,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:07,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:07,132 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1217730649, now seen corresponding path program 1 times [2021-11-13 02:33:07,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:07,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364916345] [2021-11-13 02:33:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:07,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:07,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:07,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:07,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:33:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:07,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:33:07,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:33:07,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:33:08,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:08,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364916345] [2021-11-13 02:33:08,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364916345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:33:08,101 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:33:08,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 02:33:08,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413355564] [2021-11-13 02:33:08,102 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:08,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:33:08,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:33:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:33:08,105 INFO L87 Difference]: Start difference. First operand 423 states and 552 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-11-13 02:33:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:08,270 INFO L93 Difference]: Finished difference Result 935 states and 1224 transitions. [2021-11-13 02:33:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:33:08,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 101 [2021-11-13 02:33:08,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:08,274 INFO L225 Difference]: With dead ends: 935 [2021-11-13 02:33:08,274 INFO L226 Difference]: Without dead ends: 516 [2021-11-13 02:33:08,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:33:08,277 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 488 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.49ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.19ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:08,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1525 Invalid, 69 Unknown, 0 Unchecked, 5.49ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 110.19ms Time] [2021-11-13 02:33:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-13 02:33:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 426. [2021-11-13 02:33:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 408 states have (on average 1.2745098039215685) internal successors, (520), 413 states have internal predecessors, (520), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:33:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 547 transitions. [2021-11-13 02:33:08,300 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 547 transitions. Word has length 101 [2021-11-13 02:33:08,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:08,300 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 547 transitions. [2021-11-13 02:33:08,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-11-13 02:33:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 547 transitions. [2021-11-13 02:33:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 02:33:08,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:08,303 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:08,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:08,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:08,517 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:08,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash 893903923, now seen corresponding path program 1 times [2021-11-13 02:33:08,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:08,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455397175] [2021-11-13 02:33:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:08,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:08,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:08,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:08,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:33:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:08,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:33:08,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:33:09,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:33:09,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:09,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455397175] [2021-11-13 02:33:09,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455397175] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:33:09,870 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:33:09,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:33:09,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297330408] [2021-11-13 02:33:09,871 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:09,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:33:09,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:09,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:33:09,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:33:09,873 INFO L87 Difference]: Start difference. First operand 426 states and 547 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-13 02:33:10,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:10,345 INFO L93 Difference]: Finished difference Result 1075 states and 1384 transitions. [2021-11-13 02:33:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:33:10,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 101 [2021-11-13 02:33:10,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:10,351 INFO L225 Difference]: With dead ends: 1075 [2021-11-13 02:33:10,351 INFO L226 Difference]: Without dead ends: 653 [2021-11-13 02:33:10,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:33:10,353 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 245 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 410.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 436.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:10,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 1179 Invalid, 22 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 436.48ms Time] [2021-11-13 02:33:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-13 02:33:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 649. [2021-11-13 02:33:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 626 states have (on average 1.2747603833865815) internal successors, (798), 631 states have internal predecessors, (798), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 02:33:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 835 transitions. [2021-11-13 02:33:10,385 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 835 transitions. Word has length 101 [2021-11-13 02:33:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:10,386 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 835 transitions. [2021-11-13 02:33:10,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-13 02:33:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 835 transitions. [2021-11-13 02:33:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 02:33:10,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:10,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:10,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:10,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:10,611 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:10,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:10,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1884551189, now seen corresponding path program 1 times [2021-11-13 02:33:10,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:10,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829312598] [2021-11-13 02:33:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:10,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:10,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:10,615 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:10,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:33:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:11,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:33:11,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:33:11,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:33:11,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:11,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829312598] [2021-11-13 02:33:11,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829312598] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:33:11,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:33:11,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-13 02:33:11,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308930618] [2021-11-13 02:33:11,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:11,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:33:11,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:11,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:33:11,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:33:11,605 INFO L87 Difference]: Start difference. First operand 649 states and 835 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-11-13 02:33:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:11,702 INFO L93 Difference]: Finished difference Result 1253 states and 1619 transitions. [2021-11-13 02:33:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:33:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 116 [2021-11-13 02:33:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:11,708 INFO L225 Difference]: With dead ends: 1253 [2021-11-13 02:33:11,708 INFO L226 Difference]: Without dead ends: 652 [2021-11-13 02:33:11,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:33:11,711 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 2 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:11,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1598 Invalid, 21 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 54.36ms Time] [2021-11-13 02:33:11,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-13 02:33:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-13 02:33:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 628 states have (on average 1.2754777070063694) internal successors, (801), 634 states have internal predecessors, (801), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 02:33:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 841 transitions. [2021-11-13 02:33:11,745 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 841 transitions. Word has length 116 [2021-11-13 02:33:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:11,747 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 841 transitions. [2021-11-13 02:33:11,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-11-13 02:33:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 841 transitions. [2021-11-13 02:33:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 02:33:11,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:11,751 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:11,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:11,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:11,965 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash -362072013, now seen corresponding path program 1 times [2021-11-13 02:33:11,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:11,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23564845] [2021-11-13 02:33:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:11,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:11,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:11,967 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:11,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:33:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:12,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:33:12,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:33:12,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:33:13,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:13,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23564845] [2021-11-13 02:33:13,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23564845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:33:13,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1068117595] [2021-11-13 02:33:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:13,019 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:33:13,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:33:13,021 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:33:13,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-13 02:33:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:13,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:33:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:33:13,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:33:14,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1068117595] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:33:14,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490576484] [2021-11-13 02:33:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:14,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:33:14,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:33:14,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:33:14,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 02:33:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:14,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:33:14,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:33:14,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:33:15,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490576484] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:33:15,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:33:15,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-13 02:33:15,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399564268] [2021-11-13 02:33:15,039 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:33:15,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:33:15,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:15,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:33:15,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:33:15,041 INFO L87 Difference]: Start difference. First operand 652 states and 841 transitions. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 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) [2021-11-13 02:33:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:15,690 INFO L93 Difference]: Finished difference Result 1271 states and 1657 transitions. [2021-11-13 02:33:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:33:15,691 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 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 118 [2021-11-13 02:33:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:15,696 INFO L225 Difference]: With dead ends: 1271 [2021-11-13 02:33:15,696 INFO L226 Difference]: Without dead ends: 667 [2021-11-13 02:33:15,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-13 02:33:15,698 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 36 mSDsluCounter, 4207 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 288.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4740 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.82ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 330.62ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:15,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 4740 Invalid, 163 Unknown, 0 Unchecked, 10.82ms Time], IncrementalHoareTripleChecker [28 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 330.62ms Time] [2021-11-13 02:33:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-13 02:33:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 663. [2021-11-13 02:33:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 638 states have (on average 1.2836990595611286) internal successors, (819), 644 states have internal predecessors, (819), 19 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 02:33:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 859 transitions. [2021-11-13 02:33:15,735 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 859 transitions. Word has length 118 [2021-11-13 02:33:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:15,735 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 859 transitions. [2021-11-13 02:33:15,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 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) [2021-11-13 02:33:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 859 transitions. [2021-11-13 02:33:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 02:33:15,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:15,738 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:15,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:15,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:16,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:16,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:33:16,344 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:16,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:16,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1311441259, now seen corresponding path program 2 times [2021-11-13 02:33:16,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:16,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748938190] [2021-11-13 02:33:16,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:33:16,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:16,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:16,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:16,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:33:16,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:33:16,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:33:16,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:33:16,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 02:33:17,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:33:17,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:17,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748938190] [2021-11-13 02:33:17,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748938190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:33:17,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [862228436] [2021-11-13 02:33:17,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:33:17,587 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:33:17,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:33:17,588 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:33:17,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 02:33:18,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:33:18,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:33:18,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:33:18,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 02:33:18,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:33:18,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [862228436] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:33:18,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612255033] [2021-11-13 02:33:18,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:33:18,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:33:18,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:33:18,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:33:18,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 02:33:19,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:33:19,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:33:19,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:33:19,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 02:33:19,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:33:20,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612255033] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:33:20,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:33:20,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-13 02:33:20,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849147323] [2021-11-13 02:33:20,008 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:33:20,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 02:33:20,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:20,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 02:33:20,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:33:20,014 INFO L87 Difference]: Start difference. First operand 663 states and 859 transitions. Second operand has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 02:33:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:21,439 INFO L93 Difference]: Finished difference Result 1297 states and 1696 transitions. [2021-11-13 02:33:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 02:33:21,440 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-11-13 02:33:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:21,447 INFO L225 Difference]: With dead ends: 1297 [2021-11-13 02:33:21,447 INFO L226 Difference]: Without dead ends: 676 [2021-11-13 02:33:21,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 02:33:21,452 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 59 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 619.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.86ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 718.05ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:21,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 3731 Invalid, 346 Unknown, 0 Unchecked, 8.86ms Time], IncrementalHoareTripleChecker [70 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 718.05ms Time] [2021-11-13 02:33:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-13 02:33:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 670. [2021-11-13 02:33:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 645 states have (on average 1.2806201550387597) internal successors, (826), 651 states have internal predecessors, (826), 19 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 02:33:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 866 transitions. [2021-11-13 02:33:21,486 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 866 transitions. Word has length 124 [2021-11-13 02:33:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:21,487 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 866 transitions. [2021-11-13 02:33:21,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 02:33:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 866 transitions. [2021-11-13 02:33:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 02:33:21,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:21,489 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:21,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:21,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:21,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:22,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:33:22,110 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1957809, now seen corresponding path program 3 times [2021-11-13 02:33:22,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:22,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000369300] [2021-11-13 02:33:22,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:33:22,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:22,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:22,112 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:22,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f192a5-7647-41ae-a5a6-a8ae2d3834a3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 02:33:22,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:33:22,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:33:22,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:33:22,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:22,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 02:33:22,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:33:22,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:33:22,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:33:22,986 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 02:33:22,987 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 [2021-11-13 02:33:23,142 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 02:33:23,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17