./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 04:43:58,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:43:58,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:43:58,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:43:58,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:43:58,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:43:58,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:43:58,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:43:58,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:43:58,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:43:58,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:43:58,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:43:58,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:43:58,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:43:58,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:43:58,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:43:58,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:43:58,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:43:58,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:43:58,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:43:58,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:43:58,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:43:58,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:43:58,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:43:58,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:43:58,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:43:58,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:43:58,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:43:58,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:43:58,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:43:58,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:43:58,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:43:58,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:43:58,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:43:58,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:43:58,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:43:58,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:43:58,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:43:58,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:43:58,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:43:58,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:43:58,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 04:43:58,767 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:43:58,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:43:58,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:43:58,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:43:58,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:43:58,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:43:58,768 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:43:58,768 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:43:58,769 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:43:58,769 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:43:58,769 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:43:58,769 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:43:58,769 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:43:58,769 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:43:58,769 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:43:58,769 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:43:58,770 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:43:58,770 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:43:58,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 04:43:58,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 04:43:58,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:43:58,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:43:58,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 04:43:58,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:43:58,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:43:58,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:43:58,771 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 04:43:58,772 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 04:43:58,772 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 04:43:58,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:43:58,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 04:43:58,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:43:58,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:43:58,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:43:58,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:43:58,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:43:58,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:43:58,773 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:43:58,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:43:58,773 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:43:58,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:43:58,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:43:58,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2022-12-14 04:43:58,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:43:58,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:43:58,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:43:58,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:43:58,980 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:43:58,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2022-12-14 04:44:01,527 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:44:01,749 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:44:01,750 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2022-12-14 04:44:01,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/data/2e22df574/e191087d51a5448b9aabb8dde8529344/FLAG4206bf001 [2022-12-14 04:44:01,777 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/data/2e22df574/e191087d51a5448b9aabb8dde8529344 [2022-12-14 04:44:01,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:44:01,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:44:01,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:01,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:44:01,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:44:01,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:44:01" (1/1) ... [2022-12-14 04:44:01,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99e69b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:01, skipping insertion in model container [2022-12-14 04:44:01,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:44:01" (1/1) ... [2022-12-14 04:44:01,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:44:01,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:44:02,093 WARN L237 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_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2022-12-14 04:44:02,188 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:44:02,191 WARN L237 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_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2022-12-14 04:44:02,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:02,212 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 04:44:02,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ba51dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:02, skipping insertion in model container [2022-12-14 04:44:02,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:02,213 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 04:44:02,215 INFO L158 Benchmark]: Toolchain (without parser) took 432.83ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 55.6MB in the beginning and 119.0MB in the end (delta: -63.3MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2022-12-14 04:44:02,216 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 109.1MB. Free memory was 75.5MB in the beginning and 75.4MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:44:02,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.62ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 55.3MB in the beginning and 119.0MB in the end (delta: -63.6MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2022-12-14 04:44:02,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 109.1MB. Free memory was 75.5MB in the beginning and 75.4MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.62ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 55.3MB in the beginning and 119.0MB in the end (delta: -63.6MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 04:44:03,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:44:03,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:44:03,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:44:03,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:44:03,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:44:03,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:44:03,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:44:03,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:44:03,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:44:03,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:44:03,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:44:03,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:44:03,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:44:03,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:44:03,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:44:03,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:44:03,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:44:03,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:44:03,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:44:03,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:44:03,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:44:03,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:44:03,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:44:03,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:44:03,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:44:03,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:44:03,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:44:03,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:44:03,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:44:03,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:44:03,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:44:03,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:44:03,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:44:03,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:44:03,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:44:03,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:44:03,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:44:03,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:44:03,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:44:03,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:44:03,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 04:44:03,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:44:03,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:44:03,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:44:03,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:44:03,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:44:03,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:44:03,578 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:44:03,578 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:44:03,578 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:44:03,578 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:44:03,578 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:44:03,578 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:44:03,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 04:44:03,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 04:44:03,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:44:03,579 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:44:03,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 04:44:03,580 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 04:44:03,581 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 04:44:03,581 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:44:03,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:44:03,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:44:03,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 04:44:03,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:44:03,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:44:03,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:44:03,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:44:03,582 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 04:44:03,582 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 04:44:03,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:44:03,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 04:44:03,582 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_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2022-12-14 04:44:03,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:44:03,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:44:03,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:44:03,803 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:44:03,803 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:44:03,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2022-12-14 04:44:06,415 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:44:06,658 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:44:06,658 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2022-12-14 04:44:06,671 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/data/4a28c8dcf/4860f73fd77340fc8201faaf10c57eb8/FLAGbd2024dea [2022-12-14 04:44:06,685 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/data/4a28c8dcf/4860f73fd77340fc8201faaf10c57eb8 [2022-12-14 04:44:06,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:44:06,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:44:06,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:06,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:44:06,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:44:06,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:44:06" (1/1) ... [2022-12-14 04:44:06,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7521fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:06, skipping insertion in model container [2022-12-14 04:44:06,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:44:06" (1/1) ... [2022-12-14 04:44:06,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:44:06,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:44:07,053 WARN L237 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_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2022-12-14 04:44:07,121 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:44:07,123 WARN L237 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_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2022-12-14 04:44:07,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:07,136 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 04:44:07,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:44:07,168 WARN L237 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_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2022-12-14 04:44:07,205 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:44:07,208 WARN L237 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_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2022-12-14 04:44:07,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:07,215 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:44:07,244 WARN L237 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_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2022-12-14 04:44:07,293 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:44:07,295 WARN L237 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_211f048c-03c9-420e-a017-444756f3df9b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2022-12-14 04:44:07,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:07,341 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:44:07,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07 WrapperNode [2022-12-14 04:44:07,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:07,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:44:07,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:44:07,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:44:07,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,413 INFO L138 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 886 [2022-12-14 04:44:07,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:44:07,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:44:07,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:44:07,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:44:07,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,479 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:44:07,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:44:07,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:44:07,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:44:07,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (1/1) ... [2022-12-14 04:44:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:44:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:44:07,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:44:07,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:44:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 04:44:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 04:44:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 04:44:07,554 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 04:44:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:44:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 04:44:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:44:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:44:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 04:44:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 04:44:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 04:44:07,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 04:44:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:44:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:44:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:44:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:44:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:44:07,715 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:44:07,717 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:44:07,721 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 04:44:10,815 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:44:10,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:44:10,823 INFO L300 CfgBuilder]: Removed 54 assume(true) statements. [2022-12-14 04:44:10,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:44:10 BoogieIcfgContainer [2022-12-14 04:44:10,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:44:10,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:44:10,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:44:10,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:44:10,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:44:06" (1/3) ... [2022-12-14 04:44:10,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c23199c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:44:10, skipping insertion in model container [2022-12-14 04:44:10,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:07" (2/3) ... [2022-12-14 04:44:10,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c23199c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:44:10, skipping insertion in model container [2022-12-14 04:44:10,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:44:10" (3/3) ... [2022-12-14 04:44:10,830 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-1.i [2022-12-14 04:44:10,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:44:10,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2022-12-14 04:44:10,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:44:10,897 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2be95fe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:44:10,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2022-12-14 04:44:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 442 states have (on average 2.2171945701357467) internal successors, (980), 875 states have internal predecessors, (980), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 04:44:10,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:10,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 04:44:10,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:10,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 04:44:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:10,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160452955] [2022-12-14 04:44:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:10,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:10,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:10,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:10,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 04:44:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:11,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:44:11,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:11,056 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 04:44:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:11,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:11,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:11,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160452955] [2022-12-14 04:44:11,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160452955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:11,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:11,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:44:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953646864] [2022-12-14 04:44:11,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:11,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:44:11,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:44:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:11,107 INFO L87 Difference]: Start difference. First operand has 881 states, 442 states have (on average 2.2171945701357467) internal successors, (980), 875 states have internal predecessors, (980), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:12,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:12,351 INFO L93 Difference]: Finished difference Result 868 states and 923 transitions. [2022-12-14 04:44:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:44:12,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 04:44:12,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:12,363 INFO L225 Difference]: With dead ends: 868 [2022-12-14 04:44:12,363 INFO L226 Difference]: Without dead ends: 866 [2022-12-14 04:44:12,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:12,366 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 802 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:12,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 580 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 04:44:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-12-14 04:44:12,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 865. [2022-12-14 04:44:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 442 states have (on average 2.0475113122171944) internal successors, (905), 859 states have internal predecessors, (905), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 921 transitions. [2022-12-14 04:44:12,412 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 921 transitions. Word has length 3 [2022-12-14 04:44:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:12,413 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 921 transitions. [2022-12-14 04:44:12,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 921 transitions. [2022-12-14 04:44:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 04:44:12,413 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:12,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 04:44:12,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:44:12,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:12,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:12,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:12,617 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 04:44:12,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:12,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856943070] [2022-12-14 04:44:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:12,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:12,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:12,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:12,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 04:44:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:12,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:44:12,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:12,763 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 04:44:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:12,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:12,773 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:12,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856943070] [2022-12-14 04:44:12,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856943070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:12,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:12,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:44:12,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099443736] [2022-12-14 04:44:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:12,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:44:12,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:12,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:44:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:12,776 INFO L87 Difference]: Start difference. First operand 865 states and 921 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:14,640 INFO L93 Difference]: Finished difference Result 1084 states and 1171 transitions. [2022-12-14 04:44:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:44:14,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 04:44:14,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:14,648 INFO L225 Difference]: With dead ends: 1084 [2022-12-14 04:44:14,648 INFO L226 Difference]: Without dead ends: 1084 [2022-12-14 04:44:14,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:14,650 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 240 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:14,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1308 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 04:44:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-12-14 04:44:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 997. [2022-12-14 04:44:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 570 states have (on average 2.0052631578947366) internal successors, (1143), 991 states have internal predecessors, (1143), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:44:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1169 transitions. [2022-12-14 04:44:14,684 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1169 transitions. Word has length 3 [2022-12-14 04:44:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:14,684 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1169 transitions. [2022-12-14 04:44:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1169 transitions. [2022-12-14 04:44:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 04:44:14,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:14,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:14,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 04:44:14,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:14,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 04:44:14,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:14,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380050462] [2022-12-14 04:44:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:14,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:14,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:14,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:14,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 04:44:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:15,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 04:44:15,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:15,062 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 04:44:15,067 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 04:44:15,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:15,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 04:44:15,122 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 04:44:15,122 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-12-14 04:44:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:15,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:15,140 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:15,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380050462] [2022-12-14 04:44:15,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380050462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:15,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:15,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:44:15,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114060326] [2022-12-14 04:44:15,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:15,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:44:15,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:44:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:15,141 INFO L87 Difference]: Start difference. First operand 997 states and 1169 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:16,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:16,957 INFO L93 Difference]: Finished difference Result 987 states and 1158 transitions. [2022-12-14 04:44:16,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:44:16,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 04:44:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:16,960 INFO L225 Difference]: With dead ends: 987 [2022-12-14 04:44:16,960 INFO L226 Difference]: Without dead ends: 987 [2022-12-14 04:44:16,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:16,961 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1660 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:16,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 336 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 04:44:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-12-14 04:44:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 854. [2022-12-14 04:44:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 442 states have (on average 2.020361990950226) internal successors, (893), 848 states have internal predecessors, (893), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 909 transitions. [2022-12-14 04:44:16,972 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 909 transitions. Word has length 7 [2022-12-14 04:44:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:16,973 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 909 transitions. [2022-12-14 04:44:16,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 909 transitions. [2022-12-14 04:44:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 04:44:16,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:16,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:16,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 04:44:17,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:17,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 04:44:17,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:17,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346344455] [2022-12-14 04:44:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:17,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:17,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:17,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:17,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 04:44:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:17,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:44:17,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:17,264 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 04:44:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:17,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:17,271 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:17,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346344455] [2022-12-14 04:44:17,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346344455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:17,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:17,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:44:17,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909262102] [2022-12-14 04:44:17,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:17,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:44:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:17,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:44:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:17,273 INFO L87 Difference]: Start difference. First operand 854 states and 909 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:18,529 INFO L93 Difference]: Finished difference Result 1030 states and 1116 transitions. [2022-12-14 04:44:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:44:18,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 04:44:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:18,533 INFO L225 Difference]: With dead ends: 1030 [2022-12-14 04:44:18,533 INFO L226 Difference]: Without dead ends: 1030 [2022-12-14 04:44:18,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:18,534 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 812 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:18,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 869 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 04:44:18,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-12-14 04:44:18,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 807. [2022-12-14 04:44:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 442 states have (on average 1.914027149321267) internal successors, (846), 801 states have internal predecessors, (846), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 862 transitions. [2022-12-14 04:44:18,544 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 862 transitions. Word has length 8 [2022-12-14 04:44:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:18,544 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 862 transitions. [2022-12-14 04:44:18,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 862 transitions. [2022-12-14 04:44:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 04:44:18,545 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:18,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:18,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 04:44:18,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:18,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 04:44:18,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051260465] [2022-12-14 04:44:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:18,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:18,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:18,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:18,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 04:44:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:18,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:44:18,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:18,832 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 04:44:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:18,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:18,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:18,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051260465] [2022-12-14 04:44:18,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051260465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:18,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:18,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:44:18,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085022457] [2022-12-14 04:44:18,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:18,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:44:18,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:44:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:18,852 INFO L87 Difference]: Start difference. First operand 807 states and 862 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:20,773 INFO L93 Difference]: Finished difference Result 1097 states and 1185 transitions. [2022-12-14 04:44:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:44:20,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 04:44:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:20,779 INFO L225 Difference]: With dead ends: 1097 [2022-12-14 04:44:20,779 INFO L226 Difference]: Without dead ends: 1097 [2022-12-14 04:44:20,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:20,780 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 501 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:20,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1225 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 04:44:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-12-14 04:44:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 829. [2022-12-14 04:44:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 474 states have (on average 1.9029535864978904) internal successors, (902), 823 states have internal predecessors, (902), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 918 transitions. [2022-12-14 04:44:20,798 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 918 transitions. Word has length 8 [2022-12-14 04:44:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:20,799 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 918 transitions. [2022-12-14 04:44:20,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 918 transitions. [2022-12-14 04:44:20,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 04:44:20,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:20,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:20,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 04:44:21,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:21,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:21,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2100586073, now seen corresponding path program 1 times [2022-12-14 04:44:21,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:21,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338193627] [2022-12-14 04:44:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:21,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:21,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:21,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:21,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 04:44:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:21,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 04:44:21,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:21,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:21,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:21,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:21,121 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 30 treesize of output 39 [2022-12-14 04:44:21,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 04:44:21,161 INFO L350 Elim1Store]: Elim1 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 70 treesize of output 26 [2022-12-14 04:44:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:21,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:21,173 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:21,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338193627] [2022-12-14 04:44:21,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338193627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:21,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:21,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:44:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543846236] [2022-12-14 04:44:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:21,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:44:21,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:44:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:21,174 INFO L87 Difference]: Start difference. First operand 829 states and 918 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:22,221 INFO L93 Difference]: Finished difference Result 1050 states and 1169 transitions. [2022-12-14 04:44:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:44:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 04:44:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:22,223 INFO L225 Difference]: With dead ends: 1050 [2022-12-14 04:44:22,223 INFO L226 Difference]: Without dead ends: 1050 [2022-12-14 04:44:22,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:44:22,224 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 238 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:22,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2327 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 04:44:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-12-14 04:44:22,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 831. [2022-12-14 04:44:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 476 states have (on average 1.8991596638655461) internal successors, (904), 825 states have internal predecessors, (904), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 920 transitions. [2022-12-14 04:44:22,235 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 920 transitions. Word has length 10 [2022-12-14 04:44:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:22,235 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 920 transitions. [2022-12-14 04:44:22,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 920 transitions. [2022-12-14 04:44:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 04:44:22,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:22,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:22,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 04:44:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:22,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:22,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:22,439 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 04:44:22,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:22,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62322002] [2022-12-14 04:44:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:22,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:22,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:22,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:22,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 04:44:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:22,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:44:22,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:22,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:22,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:22,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62322002] [2022-12-14 04:44:22,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62322002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:22,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:22,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:44:22,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135229399] [2022-12-14 04:44:22,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:22,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:44:22,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:22,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:44:22,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:22,584 INFO L87 Difference]: Start difference. First operand 831 states and 920 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:22,603 INFO L93 Difference]: Finished difference Result 800 states and 888 transitions. [2022-12-14 04:44:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:44:22,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 04:44:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:22,604 INFO L225 Difference]: With dead ends: 800 [2022-12-14 04:44:22,604 INFO L226 Difference]: Without dead ends: 800 [2022-12-14 04:44:22,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:22,605 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 774 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:22,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 837 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:44:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-12-14 04:44:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 789. [2022-12-14 04:44:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 458 states have (on average 1.8799126637554586) internal successors, (861), 783 states have internal predecessors, (861), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 877 transitions. [2022-12-14 04:44:22,613 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 877 transitions. Word has length 18 [2022-12-14 04:44:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:22,613 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 877 transitions. [2022-12-14 04:44:22,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:22,613 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 877 transitions. [2022-12-14 04:44:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 04:44:22,613 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:22,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:22,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 04:44:22,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:22,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 04:44:22,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:22,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834019627] [2022-12-14 04:44:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:22,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:22,820 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:22,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 04:44:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:44:22,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:22,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:22,997 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:22,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834019627] [2022-12-14 04:44:22,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834019627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:22,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:22,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:44:22,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478304124] [2022-12-14 04:44:22,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:22,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:44:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:44:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:22,999 INFO L87 Difference]: Start difference. First operand 789 states and 877 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:23,049 INFO L93 Difference]: Finished difference Result 779 states and 860 transitions. [2022-12-14 04:44:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:44:23,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 04:44:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:23,051 INFO L225 Difference]: With dead ends: 779 [2022-12-14 04:44:23,051 INFO L226 Difference]: Without dead ends: 779 [2022-12-14 04:44:23,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:44:23,052 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 755 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:23,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1545 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:44:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-12-14 04:44:23,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 767. [2022-12-14 04:44:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 450 states have (on average 1.8488888888888888) internal successors, (832), 761 states have internal predecessors, (832), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 848 transitions. [2022-12-14 04:44:23,061 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 848 transitions. Word has length 20 [2022-12-14 04:44:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:23,061 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 848 transitions. [2022-12-14 04:44:23,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 848 transitions. [2022-12-14 04:44:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 04:44:23,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:23,062 INFO L195 NwaCegarLoop]: 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] [2022-12-14 04:44:23,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-12-14 04:44:23,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:23,263 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:23,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 04:44:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:23,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707983327] [2022-12-14 04:44:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:23,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:23,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:23,265 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:23,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 04:44:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:23,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:44:23,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:23,381 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 04:44:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:23,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:23,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:23,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707983327] [2022-12-14 04:44:23,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707983327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:23,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:23,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:44:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124078963] [2022-12-14 04:44:23,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:44:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:23,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:44:23,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:23,431 INFO L87 Difference]: Start difference. First operand 767 states and 848 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:24,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:24,901 INFO L93 Difference]: Finished difference Result 997 states and 1109 transitions. [2022-12-14 04:44:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:44:24,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 04:44:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:24,903 INFO L225 Difference]: With dead ends: 997 [2022-12-14 04:44:24,903 INFO L226 Difference]: Without dead ends: 997 [2022-12-14 04:44:24,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:44:24,904 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1353 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:24,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 779 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 04:44:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-12-14 04:44:24,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 763. [2022-12-14 04:44:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 450 states have (on average 1.84) internal successors, (828), 757 states have internal predecessors, (828), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 844 transitions. [2022-12-14 04:44:24,912 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 844 transitions. Word has length 34 [2022-12-14 04:44:24,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:24,912 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 844 transitions. [2022-12-14 04:44:24,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 844 transitions. [2022-12-14 04:44:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 04:44:24,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:24,913 INFO L195 NwaCegarLoop]: 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] [2022-12-14 04:44:24,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 04:44:25,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:25,114 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:25,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 04:44:25,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:25,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865910817] [2022-12-14 04:44:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:25,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:25,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:25,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:25,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 04:44:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:25,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 04:44:25,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:25,291 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 04:44:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:25,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:25,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:25,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865910817] [2022-12-14 04:44:25,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865910817] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:25,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:25,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:44:25,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112286293] [2022-12-14 04:44:25,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:25,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:44:25,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:44:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:25,408 INFO L87 Difference]: Start difference. First operand 763 states and 844 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:27,403 INFO L93 Difference]: Finished difference Result 1038 states and 1118 transitions. [2022-12-14 04:44:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:44:27,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 04:44:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:27,405 INFO L225 Difference]: With dead ends: 1038 [2022-12-14 04:44:27,405 INFO L226 Difference]: Without dead ends: 1038 [2022-12-14 04:44:27,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:44:27,406 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 806 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:27,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1274 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 04:44:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-12-14 04:44:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 759. [2022-12-14 04:44:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 450 states have (on average 1.8311111111111111) internal successors, (824), 753 states have internal predecessors, (824), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 840 transitions. [2022-12-14 04:44:27,415 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 840 transitions. Word has length 34 [2022-12-14 04:44:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:27,415 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 840 transitions. [2022-12-14 04:44:27,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 840 transitions. [2022-12-14 04:44:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 04:44:27,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:27,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:27,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 04:44:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:27,617 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2022-12-14 04:44:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:27,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695838315] [2022-12-14 04:44:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:27,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:27,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:27,618 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:27,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 04:44:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:27,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:44:27,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:27,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:27,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:27,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695838315] [2022-12-14 04:44:27,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695838315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:27,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:27,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:44:27,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806922206] [2022-12-14 04:44:27,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:44:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:44:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:27,806 INFO L87 Difference]: Start difference. First operand 759 states and 840 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:27,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:27,844 INFO L93 Difference]: Finished difference Result 764 states and 841 transitions. [2022-12-14 04:44:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:44:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-12-14 04:44:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:27,846 INFO L225 Difference]: With dead ends: 764 [2022-12-14 04:44:27,846 INFO L226 Difference]: Without dead ends: 764 [2022-12-14 04:44:27,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:44:27,846 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 724 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:27,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1523 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:44:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-12-14 04:44:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 753. [2022-12-14 04:44:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 444 states have (on average 1.8333333333333333) internal successors, (814), 747 states have internal predecessors, (814), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 04:44:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 830 transitions. [2022-12-14 04:44:27,853 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 830 transitions. Word has length 49 [2022-12-14 04:44:27,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:27,853 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 830 transitions. [2022-12-14 04:44:27,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 830 transitions. [2022-12-14 04:44:27,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 04:44:27,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:27,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:27,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 04:44:28,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:28,055 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:28,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:28,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2022-12-14 04:44:28,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:28,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777616363] [2022-12-14 04:44:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:28,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:28,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:28,056 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:28,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 04:44:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:28,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:44:28,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:28,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:28,453 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:28,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777616363] [2022-12-14 04:44:28,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777616363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:28,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:28,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:44:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440078042] [2022-12-14 04:44:28,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:28,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:44:28,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:28,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:44:28,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:28,455 INFO L87 Difference]: Start difference. First operand 753 states and 830 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:28,542 INFO L93 Difference]: Finished difference Result 955 states and 1054 transitions. [2022-12-14 04:44:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:44:28,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-12-14 04:44:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:28,545 INFO L225 Difference]: With dead ends: 955 [2022-12-14 04:44:28,545 INFO L226 Difference]: Without dead ends: 955 [2022-12-14 04:44:28,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:44:28,546 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 229 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:28,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1539 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:44:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-12-14 04:44:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 900. [2022-12-14 04:44:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 586 states have (on average 1.7491467576791808) internal successors, (1025), 894 states have internal predecessors, (1025), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:44:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1051 transitions. [2022-12-14 04:44:28,559 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1051 transitions. Word has length 57 [2022-12-14 04:44:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:28,560 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1051 transitions. [2022-12-14 04:44:28,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1051 transitions. [2022-12-14 04:44:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 04:44:28,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:28,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:28,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 04:44:28,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:28,761 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 04:44:28,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:28,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132070087] [2022-12-14 04:44:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:28,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:28,764 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:28,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 04:44:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:29,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 04:44:29,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:29,017 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 04:44:29,022 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 04:44:29,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:29,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 04:44:29,349 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 04:44:29,350 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-12-14 04:44:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:29,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:29,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:29,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132070087] [2022-12-14 04:44:29,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132070087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:29,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:29,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:44:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257473586] [2022-12-14 04:44:29,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:29,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:44:29,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:44:29,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:29,363 INFO L87 Difference]: Start difference. First operand 900 states and 1051 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:31,049 INFO L93 Difference]: Finished difference Result 1181 states and 1437 transitions. [2022-12-14 04:44:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:44:31,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 04:44:31,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:31,051 INFO L225 Difference]: With dead ends: 1181 [2022-12-14 04:44:31,051 INFO L226 Difference]: Without dead ends: 1181 [2022-12-14 04:44:31,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:31,052 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1504 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:31,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 394 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 04:44:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-12-14 04:44:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 830. [2022-12-14 04:44:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 554 states have (on average 1.6624548736462095) internal successors, (921), 824 states have internal predecessors, (921), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:44:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 947 transitions. [2022-12-14 04:44:31,060 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 947 transitions. Word has length 60 [2022-12-14 04:44:31,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:31,060 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 947 transitions. [2022-12-14 04:44:31,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 947 transitions. [2022-12-14 04:44:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 04:44:31,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:31,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:31,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 04:44:31,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:31,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 04:44:31,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:31,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390793993] [2022-12-14 04:44:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:31,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:31,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:31,267 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:31,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 04:44:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:31,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 04:44:31,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:31,604 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 04:44:31,614 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 04:44:31,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 04:44:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:31,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:31,639 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390793993] [2022-12-14 04:44:31,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390793993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:31,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:31,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:44:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180354606] [2022-12-14 04:44:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:31,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:44:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:44:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:44:31,640 INFO L87 Difference]: Start difference. First operand 830 states and 947 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:33,326 INFO L93 Difference]: Finished difference Result 829 states and 946 transitions. [2022-12-14 04:44:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:44:33,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 04:44:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:33,328 INFO L225 Difference]: With dead ends: 829 [2022-12-14 04:44:33,329 INFO L226 Difference]: Without dead ends: 829 [2022-12-14 04:44:33,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:44:33,329 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 4 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:33,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1861 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 04:44:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-12-14 04:44:33,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-12-14 04:44:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 554 states have (on average 1.660649819494585) internal successors, (920), 823 states have internal predecessors, (920), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:44:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 946 transitions. [2022-12-14 04:44:33,340 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 946 transitions. Word has length 65 [2022-12-14 04:44:33,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:33,340 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 946 transitions. [2022-12-14 04:44:33,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 946 transitions. [2022-12-14 04:44:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 04:44:33,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:33,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:33,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 04:44:33,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:33,542 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:33,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 04:44:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:33,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257769119] [2022-12-14 04:44:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:33,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:33,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:33,547 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:33,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 04:44:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:33,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 04:44:33,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:33,774 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 04:44:33,787 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 04:44:33,795 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 04:44:33,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-14 04:44:33,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 04:44:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:33,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:33,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:33,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257769119] [2022-12-14 04:44:33,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257769119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:33,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:33,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:44:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052066019] [2022-12-14 04:44:33,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:33,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:44:33,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:44:33,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:44:33,850 INFO L87 Difference]: Start difference. First operand 829 states and 946 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:36,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:36,218 INFO L93 Difference]: Finished difference Result 828 states and 945 transitions. [2022-12-14 04:44:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:44:36,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 04:44:36,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:36,220 INFO L225 Difference]: With dead ends: 828 [2022-12-14 04:44:36,220 INFO L226 Difference]: Without dead ends: 828 [2022-12-14 04:44:36,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:44:36,221 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:36,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1881 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 04:44:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-12-14 04:44:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2022-12-14 04:44:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 553 states have (on average 1.6618444846292948) internal successors, (919), 822 states have internal predecessors, (919), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 04:44:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 945 transitions. [2022-12-14 04:44:36,231 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 945 transitions. Word has length 65 [2022-12-14 04:44:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:36,232 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 945 transitions. [2022-12-14 04:44:36,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 945 transitions. [2022-12-14 04:44:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 04:44:36,233 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:36,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:36,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-14 04:44:36,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:36,434 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:36,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash -561441905, now seen corresponding path program 1 times [2022-12-14 04:44:36,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:36,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323439525] [2022-12-14 04:44:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:36,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:36,440 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:36,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 04:44:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:36,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:44:36,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:36,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:44:36,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:36,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323439525] [2022-12-14 04:44:36,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323439525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:36,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:36,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:44:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530520619] [2022-12-14 04:44:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:36,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:44:36,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:44:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:44:36,671 INFO L87 Difference]: Start difference. First operand 828 states and 945 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 04:44:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:36,705 INFO L93 Difference]: Finished difference Result 831 states and 949 transitions. [2022-12-14 04:44:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:44:36,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-12-14 04:44:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:36,709 INFO L225 Difference]: With dead ends: 831 [2022-12-14 04:44:36,709 INFO L226 Difference]: Without dead ends: 831 [2022-12-14 04:44:36,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:44:36,710 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:36,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2137 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:44:36,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-12-14 04:44:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2022-12-14 04:44:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 555 states have (on average 1.6612612612612612) internal successors, (922), 825 states have internal predecessors, (922), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 04:44:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 949 transitions. [2022-12-14 04:44:36,724 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 949 transitions. Word has length 73 [2022-12-14 04:44:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:36,724 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 949 transitions. [2022-12-14 04:44:36,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 04:44:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 949 transitions. [2022-12-14 04:44:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 04:44:36,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:36,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:36,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 04:44:36,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:36,934 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:36,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1006162070, now seen corresponding path program 1 times [2022-12-14 04:44:36,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:36,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561456194] [2022-12-14 04:44:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:36,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:36,940 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:36,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-14 04:44:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:37,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:44:37,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:37,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:44:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:37,312 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:37,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561456194] [2022-12-14 04:44:37,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561456194] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:44:37,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [725282859] [2022-12-14 04:44:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:37,312 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 04:44:37,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 04:44:37,313 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 04:44:37,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-14 04:44:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:37,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:44:37,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:37,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:44:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:37,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [725282859] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:44:37,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175291911] [2022-12-14 04:44:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:37,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:44:37,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:44:37,725 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:44:37,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 04:44:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:37,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:44:37,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:37,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:44:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:37,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175291911] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:44:37,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 04:44:37,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 04:44:37,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207565808] [2022-12-14 04:44:37,968 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 04:44:37,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 04:44:37,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 04:44:37,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:44:37,969 INFO L87 Difference]: Start difference. First operand 831 states and 949 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:44:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:38,132 INFO L93 Difference]: Finished difference Result 843 states and 966 transitions. [2022-12-14 04:44:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 04:44:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-12-14 04:44:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:38,134 INFO L225 Difference]: With dead ends: 843 [2022-12-14 04:44:38,134 INFO L226 Difference]: Without dead ends: 843 [2022-12-14 04:44:38,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:44:38,135 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 12 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:38,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3557 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:44:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-12-14 04:44:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-12-14 04:44:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 564 states have (on average 1.6613475177304964) internal successors, (937), 834 states have internal predecessors, (937), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 04:44:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 964 transitions. [2022-12-14 04:44:38,143 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 964 transitions. Word has length 74 [2022-12-14 04:44:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:38,144 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 964 transitions. [2022-12-14 04:44:38,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:44:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 964 transitions. [2022-12-14 04:44:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 04:44:38,144 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:38,144 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:38,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 04:44:38,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-14 04:44:38,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-12-14 04:44:38,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 04:44:38,747 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:44:38,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1693213361, now seen corresponding path program 2 times [2022-12-14 04:44:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:38,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693268613] [2022-12-14 04:44:38,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:44:38,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:44:38,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:38,752 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:44:38,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-14 04:44:39,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:44:39,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:44:39,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 04:44:39,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:39,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:44:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:39,440 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:44:39,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693268613] [2022-12-14 04:44:39,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693268613] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:44:39,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1475336286] [2022-12-14 04:44:39,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:44:39,440 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 04:44:39,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 04:44:39,441 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 04:44:39,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 04:44:40,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:44:40,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:44:40,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 04:44:40,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:40,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:44:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:40,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1475336286] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:44:40,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362525303] [2022-12-14 04:44:40,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:44:40,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:44:40,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:44:40,686 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:44:40,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 04:45:01,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:45:01,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:45:01,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 04:45:01,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:45:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:01,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:45:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:02,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362525303] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:45:02,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 04:45:02,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-12-14 04:45:02,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600982164] [2022-12-14 04:45:02,096 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 04:45:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 04:45:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:45:02,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 04:45:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-12-14 04:45:02,098 INFO L87 Difference]: Start difference. First operand 841 states and 964 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 04:45:02,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:02,681 INFO L93 Difference]: Finished difference Result 862 states and 991 transitions. [2022-12-14 04:45:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 04:45:02,682 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2022-12-14 04:45:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:02,684 INFO L225 Difference]: With dead ends: 862 [2022-12-14 04:45:02,684 INFO L226 Difference]: Without dead ends: 856 [2022-12-14 04:45:02,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 04:45:02,685 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 31 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4996 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:02,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 4996 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:02,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-12-14 04:45:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 850. [2022-12-14 04:45:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 573 states have (on average 1.6544502617801047) internal successors, (948), 843 states have internal predecessors, (948), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 04:45:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 975 transitions. [2022-12-14 04:45:02,697 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 975 transitions. Word has length 77 [2022-12-14 04:45:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:02,698 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 975 transitions. [2022-12-14 04:45:02,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 04:45:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 975 transitions. [2022-12-14 04:45:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 04:45:02,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:02,699 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:02,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-14 04:45:02,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-12-14 04:45:03,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-14 04:45:03,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:03,301 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 04:45:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:03,303 INFO L85 PathProgramCache]: Analyzing trace with hash -537131025, now seen corresponding path program 3 times [2022-12-14 04:45:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:45:03,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33862497] [2022-12-14 04:45:03,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:45:03,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 04:45:03,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:45:03,306 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 04:45:03,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 04:45:04,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 04:45:04,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:45:04,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 04:45:04,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:45:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:04,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:45:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:04,928 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:45:04,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33862497] [2022-12-14 04:45:04,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33862497] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:45:04,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1778847655] [2022-12-14 04:45:04,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:45:04,928 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 04:45:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 04:45:04,929 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 04:45:04,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 04:45:08,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 04:45:08,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:45:08,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 04:45:08,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:45:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:08,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:45:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:09,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1778847655] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:45:09,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251503213] [2022-12-14 04:45:09,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:45:09,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:09,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:45:09,058 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:45:09,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211f048c-03c9-420e-a017-444756f3df9b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process