./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:19:07,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:19:07,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:19:07,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:19:07,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:19:07,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:19:07,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:19:07,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:19:07,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:19:07,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:19:07,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:19:07,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:19:07,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:19:07,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:19:07,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:19:07,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:19:07,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:19:07,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:19:07,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:19:07,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:19:07,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:19:07,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:19:07,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:19:07,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:19:07,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:19:07,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:19:07,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:19:07,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:19:07,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:19:07,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:19:07,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:19:07,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:19:07,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:19:07,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:19:07,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:19:07,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:19:07,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:19:07,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:19:07,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:19:07,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:19:07,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:19:07,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:19:08,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:19:08,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:19:08,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:19:08,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:19:08,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:19:08,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:19:08,060 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:19:08,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:19:08,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:19:08,061 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:19:08,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:19:08,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:19:08,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:19:08,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:19:08,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:19:08,063 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:19:08,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:19:08,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:19:08,064 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:19:08,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:19:08,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:19:08,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:19:08,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:19:08,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:19:08,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:19:08,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:19:08,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:19:08,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:19:08,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:19:08,068 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_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 [2021-11-09 09:19:08,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:19:08,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:19:08,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:19:08,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:19:08,362 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:19:08,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2021-11-09 09:19:08,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/data/125de874d/343f9ef5e97c470697972d9b2b5647be/FLAG46cc4b3b3 [2021-11-09 09:19:08,974 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:19:08,974 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2021-11-09 09:19:08,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/data/125de874d/343f9ef5e97c470697972d9b2b5647be/FLAG46cc4b3b3 [2021-11-09 09:19:09,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/data/125de874d/343f9ef5e97c470697972d9b2b5647be [2021-11-09 09:19:09,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:19:09,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:19:09,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:19:09,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:19:09,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:19:09,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429a9c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09, skipping insertion in model container [2021-11-09 09:19:09,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:19:09,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:19:09,723 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2021-11-09 09:19:09,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:19:09,745 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:19:09,800 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2021-11-09 09:19:09,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:19:09,831 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:19:09,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09 WrapperNode [2021-11-09 09:19:09,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:19:09,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:19:09,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:19:09,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:19:09,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:19:09,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:19:09,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:19:09,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:19:09,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (1/1) ... [2021-11-09 09:19:09,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:19:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:09,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:19:09,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:19:10,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:19:10,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:19:10,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 09:19:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:19:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:19:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-09 09:19:10,014 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2021-11-09 09:19:10,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:19:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:19:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 09:19:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 09:19:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 09:19:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 09:19:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:19:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:19:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:19:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:19:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:19:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:19:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:19:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:19:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:19:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:19:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:19:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:19:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:19:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:19:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:19:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:19:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:19:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:19:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:19:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:19:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:19:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:19:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:19:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:19:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:19:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:19:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:19:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:19:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:19:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:19:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:19:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:19:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:19:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:19:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:19:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:19:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:19:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:19:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:19:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:19:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:19:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:19:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:19:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:19:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:19:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:19:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:19:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:19:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:19:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:19:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:19:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:19:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:19:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:19:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:19:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:19:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:19:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-09 09:19:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:19:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:19:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:19:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:19:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:19:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:19:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:19:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:19:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:19:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:19:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:19:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:19:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:19:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:19:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:19:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:19:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:19:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:19:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:19:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:19:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:19:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:19:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:19:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:19:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:19:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:19:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:19:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:19:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:19:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:19:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:19:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:19:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:19:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:19:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:19:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:19:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:19:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:19:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:19:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:19:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:19:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:19:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:19:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:19:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:19:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:19:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:19:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-09 09:19:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2021-11-09 09:19:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:19:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:19:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:19:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:19:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:19:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:19:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:19:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:19:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:19:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:19:10,399 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-09 09:19:10,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:19:10,614 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-09 09:19:10,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:19:10 BoogieIcfgContainer [2021-11-09 09:19:10,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:19:10,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:19:10,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:19:10,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:19:10,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:19:09" (1/3) ... [2021-11-09 09:19:10,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3ec38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:19:10, skipping insertion in model container [2021-11-09 09:19:10,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:09" (2/3) ... [2021-11-09 09:19:10,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3ec38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:19:10, skipping insertion in model container [2021-11-09 09:19:10,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:19:10" (3/3) ... [2021-11-09 09:19:10,626 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-2.i [2021-11-09 09:19:10,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:19:10,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-11-09 09:19:10,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:19:10,683 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:19:10,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-11-09 09:19:10,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 88 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:19:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 09:19:10,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:10,709 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:10,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting dll_createErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:10,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash -140384895, now seen corresponding path program 1 times [2021-11-09 09:19:10,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:10,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588747345] [2021-11-09 09:19:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:10,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:11,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:11,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588747345] [2021-11-09 09:19:11,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588747345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:11,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:11,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:11,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090246777] [2021-11-09 09:19:11,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:11,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:11,065 INFO L87 Difference]: Start difference. First operand has 96 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 88 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:19:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:11,560 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-11-09 09:19:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:11,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-09 09:19:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:11,576 INFO L225 Difference]: With dead ends: 152 [2021-11-09 09:19:11,576 INFO L226 Difference]: Without dead ends: 143 [2021-11-09 09:19:11,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-09 09:19:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 105. [2021-11-09 09:19:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.7681159420289856) internal successors, (122), 98 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:19:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2021-11-09 09:19:11,629 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 11 [2021-11-09 09:19:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:11,630 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2021-11-09 09:19:11,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:19:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2021-11-09 09:19:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 09:19:11,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:11,631 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:11,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:19:11,632 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting dll_createErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash -140384894, now seen corresponding path program 1 times [2021-11-09 09:19:11,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:11,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952210974] [2021-11-09 09:19:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:11,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:11,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:11,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:11,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952210974] [2021-11-09 09:19:11,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952210974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:11,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:11,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:11,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137170177] [2021-11-09 09:19:11,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:11,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:11,793 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:19:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:12,114 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2021-11-09 09:19:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-09 09:19:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:12,117 INFO L225 Difference]: With dead ends: 138 [2021-11-09 09:19:12,117 INFO L226 Difference]: Without dead ends: 138 [2021-11-09 09:19:12,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:12,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-09 09:19:12,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 100. [2021-11-09 09:19:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.6956521739130435) internal successors, (117), 93 states have internal predecessors, (117), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:19:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2021-11-09 09:19:12,129 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 11 [2021-11-09 09:19:12,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:12,129 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2021-11-09 09:19:12,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:19:12,130 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2021-11-09 09:19:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:19:12,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:12,131 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:12,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:19:12,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1063191514, now seen corresponding path program 1 times [2021-11-09 09:19:12,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:12,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589987826] [2021-11-09 09:19:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:12,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:12,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:12,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589987826] [2021-11-09 09:19:12,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589987826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:12,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:12,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:19:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424181788] [2021-11-09 09:19:12,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:19:12,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:19:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:19:12,294 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:12,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:12,617 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2021-11-09 09:19:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:19:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-09 09:19:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:12,630 INFO L225 Difference]: With dead ends: 95 [2021-11-09 09:19:12,632 INFO L226 Difference]: Without dead ends: 92 [2021-11-09 09:19:12,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:19:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-09 09:19:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2021-11-09 09:19:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 75 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2021-11-09 09:19:12,647 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 14 [2021-11-09 09:19:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:12,647 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2021-11-09 09:19:12,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2021-11-09 09:19:12,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:19:12,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:12,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:12,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:19:12,649 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting dll_createErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1654550664, now seen corresponding path program 1 times [2021-11-09 09:19:12,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:12,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003705781] [2021-11-09 09:19:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:12,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:12,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:12,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:12,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003705781] [2021-11-09 09:19:12,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003705781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:12,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:12,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:19:12,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453230531] [2021-11-09 09:19:12,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:12,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:12,754 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:19:12,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:12,893 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2021-11-09 09:19:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:19:12,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-09 09:19:12,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:12,895 INFO L225 Difference]: With dead ends: 89 [2021-11-09 09:19:12,895 INFO L226 Difference]: Without dead ends: 89 [2021-11-09 09:19:12,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-09 09:19:12,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2021-11-09 09:19:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 82 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-11-09 09:19:12,903 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 17 [2021-11-09 09:19:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:12,903 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-11-09 09:19:12,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:19:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-11-09 09:19:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 09:19:12,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:12,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:12,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:19:12,906 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1156447097, now seen corresponding path program 1 times [2021-11-09 09:19:12,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:12,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747124897] [2021-11-09 09:19:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:12,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:13,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:13,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747124897] [2021-11-09 09:19:13,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747124897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:13,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:13,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:19:13,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750595997] [2021-11-09 09:19:13,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:19:13,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:19:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:19:13,093 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:13,440 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2021-11-09 09:19:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:19:13,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-09 09:19:13,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:13,441 INFO L225 Difference]: With dead ends: 88 [2021-11-09 09:19:13,442 INFO L226 Difference]: Without dead ends: 88 [2021-11-09 09:19:13,442 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:19:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-09 09:19:13,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2021-11-09 09:19:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 76 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2021-11-09 09:19:13,457 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 23 [2021-11-09 09:19:13,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:13,457 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2021-11-09 09:19:13,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2021-11-09 09:19:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 09:19:13,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:13,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:13,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:19:13,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1156447098, now seen corresponding path program 1 times [2021-11-09 09:19:13,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:13,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69225479] [2021-11-09 09:19:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:13,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:13,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:13,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69225479] [2021-11-09 09:19:13,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69225479] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:13,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400108753] [2021-11-09 09:19:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:13,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:13,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:13,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:13,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:19:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:13,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:19:13,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:13,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400108753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:13,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:13,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2021-11-09 09:19:13,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365786097] [2021-11-09 09:19:13,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:19:13,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:19:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:19:13,967 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:14,251 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2021-11-09 09:19:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:19:14,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-11-09 09:19:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:14,252 INFO L225 Difference]: With dead ends: 97 [2021-11-09 09:19:14,253 INFO L226 Difference]: Without dead ends: 94 [2021-11-09 09:19:14,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:19:14,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-09 09:19:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2021-11-09 09:19:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 78 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2021-11-09 09:19:14,259 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 23 [2021-11-09 09:19:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:14,260 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2021-11-09 09:19:14,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2021-11-09 09:19:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:19:14,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:14,261 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:14,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:14,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:14,483 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dll_createErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:14,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:14,483 INFO L85 PathProgramCache]: Analyzing trace with hash 987783306, now seen corresponding path program 1 times [2021-11-09 09:19:14,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:14,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635616366] [2021-11-09 09:19:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:14,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:14,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:14,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635616366] [2021-11-09 09:19:14,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635616366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:14,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754442800] [2021-11-09 09:19:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:14,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:14,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:14,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:14,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:19:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:14,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:19:14,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:14,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:14,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:15,031 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:19:15,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-11-09 09:19:15,040 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:15,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-09 09:19:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:15,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754442800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:15,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:15,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-09 09:19:15,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288579215] [2021-11-09 09:19:15,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:19:15,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:19:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:19:15,315 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:19:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:15,565 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2021-11-09 09:19:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:19:15,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-09 09:19:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:15,566 INFO L225 Difference]: With dead ends: 83 [2021-11-09 09:19:15,566 INFO L226 Difference]: Without dead ends: 83 [2021-11-09 09:19:15,567 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:19:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-09 09:19:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-11-09 09:19:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 77 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2021-11-09 09:19:15,572 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 26 [2021-11-09 09:19:15,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:15,573 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2021-11-09 09:19:15,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:19:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2021-11-09 09:19:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 09:19:15,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:15,574 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:15,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:15,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-09 09:19:15,787 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:15,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash 887236283, now seen corresponding path program 2 times [2021-11-09 09:19:15,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:15,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045995248] [2021-11-09 09:19:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:15,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:15,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:15,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045995248] [2021-11-09 09:19:15,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045995248] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:15,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131114671] [2021-11-09 09:19:15,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:19:15,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:15,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:15,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:19:16,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:19:16,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:19:16,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:19:16,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:16,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131114671] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:16,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:16,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-11-09 09:19:16,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190458020] [2021-11-09 09:19:16,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:19:16,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:19:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:19:16,236 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:19:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:16,613 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2021-11-09 09:19:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:19:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-09 09:19:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:16,615 INFO L225 Difference]: With dead ends: 105 [2021-11-09 09:19:16,615 INFO L226 Difference]: Without dead ends: 102 [2021-11-09 09:19:16,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:19:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-09 09:19:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2021-11-09 09:19:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 87 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2021-11-09 09:19:16,621 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 32 [2021-11-09 09:19:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:16,621 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2021-11-09 09:19:16,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:19:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2021-11-09 09:19:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-09 09:19:16,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:16,623 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:16,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:16,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:16,837 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:16,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2122815528, now seen corresponding path program 1 times [2021-11-09 09:19:16,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:16,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553479679] [2021-11-09 09:19:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:16,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:17,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:17,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553479679] [2021-11-09 09:19:17,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553479679] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:17,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358013036] [2021-11-09 09:19:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:17,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:17,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:17,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:17,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:19:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:17,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:19:17,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:17,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358013036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:17,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:17,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2021-11-09 09:19:17,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116273292] [2021-11-09 09:19:17,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:19:17,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:17,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:19:17,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:19:17,393 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:17,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:17,629 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2021-11-09 09:19:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:19:17,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2021-11-09 09:19:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:17,631 INFO L225 Difference]: With dead ends: 115 [2021-11-09 09:19:17,631 INFO L226 Difference]: Without dead ends: 112 [2021-11-09 09:19:17,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:19:17,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-09 09:19:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2021-11-09 09:19:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.3012048192771084) internal successors, (108), 97 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-11-09 09:19:17,637 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 43 [2021-11-09 09:19:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:17,637 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-11-09 09:19:17,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-11-09 09:19:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:19:17,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:17,639 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:17,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:17,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:17,858 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:17,859 INFO L85 PathProgramCache]: Analyzing trace with hash 925581663, now seen corresponding path program 2 times [2021-11-09 09:19:17,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:17,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877218184] [2021-11-09 09:19:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:17,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:17,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:18,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:18,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877218184] [2021-11-09 09:19:18,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877218184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:18,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086056394] [2021-11-09 09:19:18,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:19:18,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:18,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:18,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:19:18,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:19:18,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:19:18,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:19:18,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:18,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086056394] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:18,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:18,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 12 [2021-11-09 09:19:18,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363769844] [2021-11-09 09:19:18,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:19:18,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:19:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:19:18,455 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:18,706 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2021-11-09 09:19:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 09:19:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2021-11-09 09:19:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:18,710 INFO L225 Difference]: With dead ends: 125 [2021-11-09 09:19:18,710 INFO L226 Difference]: Without dead ends: 122 [2021-11-09 09:19:18,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:19:18,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-09 09:19:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 113. [2021-11-09 09:19:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 107 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2021-11-09 09:19:18,716 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 53 [2021-11-09 09:19:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:18,717 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2021-11-09 09:19:18,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2021-11-09 09:19:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-09 09:19:18,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:18,727 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:18,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:18,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 09:19:18,952 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:18,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1221455402, now seen corresponding path program 3 times [2021-11-09 09:19:18,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:18,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487082785] [2021-11-09 09:19:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:18,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-09 09:19:19,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:19,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487082785] [2021-11-09 09:19:19,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487082785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:19,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:19,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:19:19,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121867415] [2021-11-09 09:19:19,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:19:19,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:19:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:19:19,238 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:19,599 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2021-11-09 09:19:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:19:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2021-11-09 09:19:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:19,601 INFO L225 Difference]: With dead ends: 148 [2021-11-09 09:19:19,601 INFO L226 Difference]: Without dead ends: 148 [2021-11-09 09:19:19,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:19:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-09 09:19:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 139. [2021-11-09 09:19:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.26890756302521) internal successors, (151), 133 states have internal predecessors, (151), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2021-11-09 09:19:19,607 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 63 [2021-11-09 09:19:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:19,607 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2021-11-09 09:19:19,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2021-11-09 09:19:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:19:19,608 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:19,608 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:19,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:19:19,609 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr22ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:19,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash -914693339, now seen corresponding path program 1 times [2021-11-09 09:19:19,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:19,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475992839] [2021-11-09 09:19:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:19,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-09 09:19:19,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:19,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475992839] [2021-11-09 09:19:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475992839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:19,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:19,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:19:19,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588682173] [2021-11-09 09:19:19,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:19:19,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:19:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:19:19,872 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:20,158 INFO L93 Difference]: Finished difference Result 145 states and 160 transitions. [2021-11-09 09:19:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:19:20,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2021-11-09 09:19:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:20,160 INFO L225 Difference]: With dead ends: 145 [2021-11-09 09:19:20,160 INFO L226 Difference]: Without dead ends: 145 [2021-11-09 09:19:20,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:19:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-09 09:19:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2021-11-09 09:19:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 133 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2021-11-09 09:19:20,164 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 67 [2021-11-09 09:19:20,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:20,165 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2021-11-09 09:19:20,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2021-11-09 09:19:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 09:19:20,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:20,166 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:20,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:19:20,167 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1985689607, now seen corresponding path program 1 times [2021-11-09 09:19:20,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:20,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168720396] [2021-11-09 09:19:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:20,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 09:19:20,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:20,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168720396] [2021-11-09 09:19:20,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168720396] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:20,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855317708] [2021-11-09 09:19:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:20,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:20,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:20,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:20,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:19:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:20,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:19:20,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:20,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:20,942 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:20,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:19:20,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:19:21,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-09 09:19:21,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-09 09:19:21,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-09 09:19:21,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-09 09:19:21,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:21,307 INFO L354 Elim1Store]: treesize reduction 114, result has 18.6 percent of original size [2021-11-09 09:19:21,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 39 [2021-11-09 09:19:21,607 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:19:21,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2021-11-09 09:19:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-09 09:19:21,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855317708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:21,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:21,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 24 [2021-11-09 09:19:21,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828993109] [2021-11-09 09:19:21,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:19:21,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:19:21,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:19:21,636 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 20 states have internal predecessors, (68), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:22,588 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-11-09 09:19:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:19:22,589 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 20 states have internal predecessors, (68), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 71 [2021-11-09 09:19:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:22,590 INFO L225 Difference]: With dead ends: 145 [2021-11-09 09:19:22,590 INFO L226 Difference]: Without dead ends: 145 [2021-11-09 09:19:22,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=1242, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:19:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-09 09:19:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2021-11-09 09:19:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.2521008403361344) internal successors, (149), 133 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 154 transitions. [2021-11-09 09:19:22,596 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 154 transitions. Word has length 71 [2021-11-09 09:19:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:22,596 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 154 transitions. [2021-11-09 09:19:22,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 20 states have internal predecessors, (68), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 154 transitions. [2021-11-09 09:19:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 09:19:22,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:22,607 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-09 09:19:22,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:22,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 09:19:22,831 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:22,832 INFO L85 PathProgramCache]: Analyzing trace with hash 344556542, now seen corresponding path program 1 times [2021-11-09 09:19:22,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:22,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928434536] [2021-11-09 09:19:22,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:22,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:23,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 09:19:23,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:23,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928434536] [2021-11-09 09:19:23,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928434536] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:23,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771140303] [2021-11-09 09:19:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:23,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:23,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:23,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:23,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:19:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:23,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-09 09:19:23,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:23,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:23,814 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:23,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:19:23,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:19:23,889 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-09 09:19:23,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:19:23,952 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-09 09:19:23,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-11-09 09:19:23,989 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-09 09:19:23,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-11-09 09:19:24,040 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-09 09:19:24,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 29 [2021-11-09 09:19:24,263 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-09 09:19:24,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-09 09:19:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-09 09:19:24,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771140303] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:24,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:24,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 24 [2021-11-09 09:19:24,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962307056] [2021-11-09 09:19:24,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:19:24,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:19:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:19:24,288 INFO L87 Difference]: Start difference. First operand 139 states and 154 transitions. Second operand has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 20 states have internal predecessors, (73), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:25,427 INFO L93 Difference]: Finished difference Result 145 states and 158 transitions. [2021-11-09 09:19:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:19:25,428 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 20 states have internal predecessors, (73), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 73 [2021-11-09 09:19:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:25,429 INFO L225 Difference]: With dead ends: 145 [2021-11-09 09:19:25,430 INFO L226 Difference]: Without dead ends: 145 [2021-11-09 09:19:25,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=1290, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:19:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-09 09:19:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2021-11-09 09:19:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.2436974789915967) internal successors, (148), 133 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2021-11-09 09:19:25,436 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 73 [2021-11-09 09:19:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:25,437 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2021-11-09 09:19:25,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 20 states have internal predecessors, (73), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2021-11-09 09:19:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-09 09:19:25,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:25,439 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-09 09:19:25,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-09 09:19:25,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 09:19:25,659 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:25,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1752734109, now seen corresponding path program 1 times [2021-11-09 09:19:25,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:25,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072597584] [2021-11-09 09:19:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:25,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 09:19:25,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:25,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072597584] [2021-11-09 09:19:25,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072597584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:25,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48836434] [2021-11-09 09:19:25,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:25,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:25,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:25,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:26,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:19:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:26,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-09 09:19:26,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:26,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:26,521 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:26,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:19:26,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-09 09:19:26,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:26,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:19:26,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:26,780 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:19:26,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-11-09 09:19:26,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:19:26,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:26,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 09:19:26,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092705102] [2021-11-09 09:19:26,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:19:26,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:19:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:19:26,842 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:27,250 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2021-11-09 09:19:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:19:27,251 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2021-11-09 09:19:27,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:27,252 INFO L225 Difference]: With dead ends: 145 [2021-11-09 09:19:27,252 INFO L226 Difference]: Without dead ends: 145 [2021-11-09 09:19:27,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:19:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-09 09:19:27,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2021-11-09 09:19:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.2352941176470589) internal successors, (147), 133 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-11-09 09:19:27,258 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 74 [2021-11-09 09:19:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:27,259 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-11-09 09:19:27,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-11-09 09:19:27,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:19:27,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:27,261 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-09 09:19:27,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:27,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:27,482 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 407932067, now seen corresponding path program 1 times [2021-11-09 09:19:27,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:27,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450196444] [2021-11-09 09:19:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:27,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 09:19:27,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:27,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450196444] [2021-11-09 09:19:27,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450196444] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:27,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947214563] [2021-11-09 09:19:27,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:27,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:27,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:27,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:27,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:19:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:28,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-09 09:19:28,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:28,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:28,409 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:28,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:19:28,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:19:28,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:28,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-09 09:19:28,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:28,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-09 09:19:28,597 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-09 09:19:28,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-09 09:19:28,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-09 09:19:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-09 09:19:28,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947214563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:28,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:28,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 22 [2021-11-09 09:19:28,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161872203] [2021-11-09 09:19:28,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 09:19:28,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:28,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 09:19:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:19:28,982 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 18 states have internal predecessors, (72), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:29,823 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2021-11-09 09:19:29,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:19:29,824 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 18 states have internal predecessors, (72), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-09 09:19:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:29,825 INFO L225 Difference]: With dead ends: 145 [2021-11-09 09:19:29,825 INFO L226 Difference]: Without dead ends: 145 [2021-11-09 09:19:29,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:19:29,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-09 09:19:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2021-11-09 09:19:29,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.226890756302521) internal successors, (146), 133 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2021-11-09 09:19:29,831 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 75 [2021-11-09 09:19:29,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:29,832 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2021-11-09 09:19:29,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 18 states have internal predecessors, (72), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2021-11-09 09:19:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 09:19:29,833 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:29,834 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-09 09:19:29,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:30,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:30,048 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1917830526, now seen corresponding path program 1 times [2021-11-09 09:19:30,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:30,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110547597] [2021-11-09 09:19:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:30,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:30,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 09:19:30,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:30,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110547597] [2021-11-09 09:19:30,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110547597] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:30,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717892167] [2021-11-09 09:19:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:30,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:30,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:30,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:30,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:19:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:31,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-09 09:19:31,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:31,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:31,246 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:31,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:19:31,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-09 09:19:31,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:31,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:19:31,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:31,507 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:19:31,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-11-09 09:19:31,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:19:31,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:31,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-09 09:19:31,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603681462] [2021-11-09 09:19:31,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 09:19:31,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:31,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 09:19:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:19:31,572 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:32,191 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2021-11-09 09:19:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:19:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2021-11-09 09:19:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:32,193 INFO L225 Difference]: With dead ends: 145 [2021-11-09 09:19:32,193 INFO L226 Difference]: Without dead ends: 145 [2021-11-09 09:19:32,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2021-11-09 09:19:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-09 09:19:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2021-11-09 09:19:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.218487394957983) internal successors, (145), 133 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2021-11-09 09:19:32,199 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 76 [2021-11-09 09:19:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:32,199 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2021-11-09 09:19:32,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2021-11-09 09:19:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:19:32,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:32,201 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-09 09:19:32,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:32,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 09:19:32,406 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:32,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1180697342, now seen corresponding path program 1 times [2021-11-09 09:19:32,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:32,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816034416] [2021-11-09 09:19:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:32,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:32,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 56 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 09:19:32,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:32,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816034416] [2021-11-09 09:19:32,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816034416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:32,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587911056] [2021-11-09 09:19:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:32,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:32,830 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:32,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:19:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:33,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-09 09:19:33,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:33,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:33,419 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:33,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:19:33,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:19:33,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:33,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:19:33,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:33,607 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:19:33,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 43 [2021-11-09 09:19:33,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:19:33,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:33,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-09 09:19:33,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041000320] [2021-11-09 09:19:33,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:19:33,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:19:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:19:33,658 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:34,291 INFO L93 Difference]: Finished difference Result 151 states and 159 transitions. [2021-11-09 09:19:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:19:34,291 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2021-11-09 09:19:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:34,292 INFO L225 Difference]: With dead ends: 151 [2021-11-09 09:19:34,292 INFO L226 Difference]: Without dead ends: 151 [2021-11-09 09:19:34,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:19:34,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-09 09:19:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 141. [2021-11-09 09:19:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 121 states have (on average 1.2231404958677685) internal successors, (148), 135 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2021-11-09 09:19:34,299 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 77 [2021-11-09 09:19:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:34,299 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2021-11-09 09:19:34,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2021-11-09 09:19:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:19:34,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:34,301 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-09 09:19:34,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:34,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 09:19:34,526 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:34,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1180697343, now seen corresponding path program 1 times [2021-11-09 09:19:34,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:34,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250668638] [2021-11-09 09:19:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:34,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-09 09:19:35,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:35,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250668638] [2021-11-09 09:19:35,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250668638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:35,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24096542] [2021-11-09 09:19:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:35,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:35,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:35,172 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:35,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 09:19:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:35,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-09 09:19:35,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:35,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:35,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:35,910 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:35,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:19:35,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:19:36,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:19:36,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:19:36,111 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-09 09:19:36,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:19:36,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:36,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:19:36,268 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-11-09 09:19:36,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 70 [2021-11-09 09:19:36,288 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-09 09:19:36,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 81 [2021-11-09 09:19:37,174 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-09 09:19:37,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 70 [2021-11-09 09:19:37,182 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-09 09:19:37,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 30 [2021-11-09 09:19:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-09 09:19:37,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24096542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:37,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:37,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2021-11-09 09:19:37,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708498579] [2021-11-09 09:19:37,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-09 09:19:37,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:37,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-09 09:19:37,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2021-11-09 09:19:37,290 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:39,173 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-11-09 09:19:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:19:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-09 09:19:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:39,175 INFO L225 Difference]: With dead ends: 181 [2021-11-09 09:19:39,175 INFO L226 Difference]: Without dead ends: 181 [2021-11-09 09:19:39,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=1576, Unknown=0, NotChecked=0, Total=1806 [2021-11-09 09:19:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-09 09:19:39,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2021-11-09 09:19:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 143 states have (on average 1.2307692307692308) internal successors, (176), 157 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2021-11-09 09:19:39,181 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 77 [2021-11-09 09:19:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:39,182 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2021-11-09 09:19:39,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2021-11-09 09:19:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 09:19:39,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:39,183 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-09 09:19:39,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:39,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:39,398 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:39,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash -492539897, now seen corresponding path program 1 times [2021-11-09 09:19:39,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:39,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436083118] [2021-11-09 09:19:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:39,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:39,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:39,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 09:19:39,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:39,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436083118] [2021-11-09 09:19:39,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436083118] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:39,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505218449] [2021-11-09 09:19:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:39,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:39,822 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:39,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 09:19:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:40,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 09:19:40,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:40,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:40,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:40,603 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:19:40,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:19:40,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-09 09:19:40,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-09 09:19:40,812 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-09 09:19:40,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 38 [2021-11-09 09:19:41,208 INFO L354 Elim1Store]: treesize reduction 48, result has 26.2 percent of original size [2021-11-09 09:19:41,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 37 [2021-11-09 09:19:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-09 09:19:41,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505218449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:41,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:41,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-11-09 09:19:41,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748262999] [2021-11-09 09:19:41,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:19:41,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:41,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:19:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:19:41,484 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 24 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:43,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:43,069 INFO L93 Difference]: Finished difference Result 153 states and 170 transitions. [2021-11-09 09:19:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:19:43,070 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 24 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78 [2021-11-09 09:19:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:43,072 INFO L225 Difference]: With dead ends: 153 [2021-11-09 09:19:43,072 INFO L226 Difference]: Without dead ends: 153 [2021-11-09 09:19:43,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=281, Invalid=1789, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:19:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-09 09:19:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-09 09:19:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.2406015037593985) internal successors, (165), 147 states have internal predecessors, (165), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:43,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 170 transitions. [2021-11-09 09:19:43,079 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 170 transitions. Word has length 78 [2021-11-09 09:19:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:43,080 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 170 transitions. [2021-11-09 09:19:43,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 24 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:19:43,080 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 170 transitions. [2021-11-09 09:19:43,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-09 09:19:43,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:43,082 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:43,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:43,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:43,302 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr22ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1082791886, now seen corresponding path program 1 times [2021-11-09 09:19:43,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:43,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626090693] [2021-11-09 09:19:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:43,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:43,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-09 09:19:43,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:43,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626090693] [2021-11-09 09:19:43,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626090693] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:43,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710380897] [2021-11-09 09:19:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:43,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:43,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:43,538 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:43,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 09:19:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:44,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 09:19:44,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:44,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 28 [2021-11-09 09:19:44,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 13 [2021-11-09 09:19:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-09 09:19:44,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710380897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:44,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:19:44,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-11-09 09:19:44,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779585648] [2021-11-09 09:19:44,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:19:44,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:19:44,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:19:44,602 INFO L87 Difference]: Start difference. First operand 153 states and 170 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:19:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:44,983 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2021-11-09 09:19:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:19:44,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 81 [2021-11-09 09:19:44,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:44,987 INFO L225 Difference]: With dead ends: 156 [2021-11-09 09:19:44,987 INFO L226 Difference]: Without dead ends: 156 [2021-11-09 09:19:44,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:19:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-09 09:19:44,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2021-11-09 09:19:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.2255639097744362) internal successors, (163), 147 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 168 transitions. [2021-11-09 09:19:44,994 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 168 transitions. Word has length 81 [2021-11-09 09:19:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:44,996 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 168 transitions. [2021-11-09 09:19:44,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:19:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 168 transitions. [2021-11-09 09:19:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 09:19:44,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:44,999 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:45,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:45,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-09 09:19:45,222 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:45,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash -951615454, now seen corresponding path program 1 times [2021-11-09 09:19:45,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:45,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348926038] [2021-11-09 09:19:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:45,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 73 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:19:46,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:46,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348926038] [2021-11-09 09:19:46,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348926038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:46,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666480445] [2021-11-09 09:19:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:46,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:46,074 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:46,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 09:19:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:46,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-09 09:19:46,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:46,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:46,709 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:19:46,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:19:46,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:19:46,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-09 09:19:46,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-09 09:19:46,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-09 09:19:46,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:46,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-09 09:19:47,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:47,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:47,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:47,071 INFO L354 Elim1Store]: treesize reduction 114, result has 18.6 percent of original size [2021-11-09 09:19:47,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 44 [2021-11-09 09:19:47,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.base] [2021-11-09 09:19:47,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:47,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-09 09:19:47,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779432523] [2021-11-09 09:19:47,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-09 09:19:47,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-09 09:19:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:19:47,128 INFO L87 Difference]: Start difference. First operand 153 states and 168 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 20 states have internal predecessors, (70), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:48,254 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2021-11-09 09:19:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:19:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 20 states have internal predecessors, (70), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2021-11-09 09:19:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:48,256 INFO L225 Difference]: With dead ends: 159 [2021-11-09 09:19:48,256 INFO L226 Difference]: Without dead ends: 159 [2021-11-09 09:19:48,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=246, Invalid=1646, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 09:19:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-09 09:19:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2021-11-09 09:19:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.218045112781955) internal successors, (162), 147 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 167 transitions. [2021-11-09 09:19:48,262 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 167 transitions. Word has length 85 [2021-11-09 09:19:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:48,262 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 167 transitions. [2021-11-09 09:19:48,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 20 states have internal predecessors, (70), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 167 transitions. [2021-11-09 09:19:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 09:19:48,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:48,264 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:48,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:48,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:48,489 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1952372199, now seen corresponding path program 1 times [2021-11-09 09:19:48,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:48,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618612833] [2021-11-09 09:19:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:48,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:48,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:19:49,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:49,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618612833] [2021-11-09 09:19:49,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618612833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:49,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067931866] [2021-11-09 09:19:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:49,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:49,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:49,389 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:49,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 09:19:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:49,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-09 09:19:49,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:50,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:50,079 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:19:50,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:19:50,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:19:50,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:50,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:19:50,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:50,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:50,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2021-11-09 09:19:50,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:50,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:50,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:50,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2021-11-09 09:19:50,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:50,380 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-09 09:19:50,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 34 [2021-11-09 09:19:50,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.base] [2021-11-09 09:19:50,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:50,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-09 09:19:50,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834230061] [2021-11-09 09:19:50,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-09 09:19:50,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:50,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-09 09:19:50,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:19:50,457 INFO L87 Difference]: Start difference. First operand 153 states and 167 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:51,625 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2021-11-09 09:19:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:19:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 87 [2021-11-09 09:19:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:51,627 INFO L225 Difference]: With dead ends: 159 [2021-11-09 09:19:51,628 INFO L226 Difference]: Without dead ends: 159 [2021-11-09 09:19:51,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=1811, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:19:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-09 09:19:51,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2021-11-09 09:19:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.2105263157894737) internal successors, (161), 147 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2021-11-09 09:19:51,634 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 87 [2021-11-09 09:19:51,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:51,634 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2021-11-09 09:19:51,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2021-11-09 09:19:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-09 09:19:51,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:51,636 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:51,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:51,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-09 09:19:51,858 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash 55411924, now seen corresponding path program 1 times [2021-11-09 09:19:51,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:51,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011234379] [2021-11-09 09:19:51,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:51,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:52,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:52,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 70 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:19:52,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:52,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011234379] [2021-11-09 09:19:52,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011234379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:52,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776321281] [2021-11-09 09:19:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:52,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:52,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:52,797 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:52,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 09:19:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:53,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-09 09:19:53,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:53,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:53,612 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:19:53,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:19:53,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-09 09:19:53,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:53,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:19:53,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:53,891 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:19:53,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 47 [2021-11-09 09:19:53,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:19:53,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:53,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-09 09:19:53,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605629190] [2021-11-09 09:19:53,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-09 09:19:53,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-09 09:19:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:19:53,971 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 20 states have internal predecessors, (73), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:55,177 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2021-11-09 09:19:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:19:55,178 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 20 states have internal predecessors, (73), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2021-11-09 09:19:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:55,179 INFO L225 Difference]: With dead ends: 159 [2021-11-09 09:19:55,179 INFO L226 Difference]: Without dead ends: 159 [2021-11-09 09:19:55,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=251, Invalid=1819, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:19:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-09 09:19:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2021-11-09 09:19:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 147 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2021-11-09 09:19:55,184 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 88 [2021-11-09 09:19:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:55,185 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2021-11-09 09:19:55,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 20 states have internal predecessors, (73), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2021-11-09 09:19:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-09 09:19:55,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:55,187 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:55,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-09 09:19:55,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-09 09:19:55,390 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -669448116, now seen corresponding path program 1 times [2021-11-09 09:19:55,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:55,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894981583] [2021-11-09 09:19:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:55,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 70 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:19:56,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:56,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894981583] [2021-11-09 09:19:56,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894981583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:56,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531602938] [2021-11-09 09:19:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:56,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:56,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:56,278 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:56,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 09:19:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:56,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-09 09:19:56,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:56,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:19:57,031 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:19:57,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:19:57,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:19:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:57,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-09 09:19:57,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:19:57,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-09 09:19:57,259 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-09 09:19:57,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2021-11-09 09:19:57,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.base] [2021-11-09 09:19:57,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:57,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-11-09 09:19:57,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786949365] [2021-11-09 09:19:57,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:19:57,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:57,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:19:57,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2021-11-09 09:19:57,314 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 21 states have internal predecessors, (74), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:58,446 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2021-11-09 09:19:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:19:58,446 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 21 states have internal predecessors, (74), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 89 [2021-11-09 09:19:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:58,447 INFO L225 Difference]: With dead ends: 159 [2021-11-09 09:19:58,447 INFO L226 Difference]: Without dead ends: 159 [2021-11-09 09:19:58,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=1485, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 09:19:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-09 09:19:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2021-11-09 09:19:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.1954887218045114) internal successors, (159), 147 states have internal predecessors, (159), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:19:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2021-11-09 09:19:58,451 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 89 [2021-11-09 09:19:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:58,452 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2021-11-09 09:19:58,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 21 states have internal predecessors, (74), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:19:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2021-11-09 09:19:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 09:19:58,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:58,453 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:58,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:58,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-09 09:19:58,658 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:19:58,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash -956877831, now seen corresponding path program 1 times [2021-11-09 09:19:58,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:58,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157140517] [2021-11-09 09:19:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:58,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:19:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:19:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 70 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:19:59,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:59,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157140517] [2021-11-09 09:19:59,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157140517] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:59,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836638629] [2021-11-09 09:19:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:59,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:59,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:59,650 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:59,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 09:20:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:00,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-09 09:20:00,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:00,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:00,511 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:00,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:00,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-09 09:20:00,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:00,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:00,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:00,792 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:20:00,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 47 [2021-11-09 09:20:00,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:20:00,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:00,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-09 09:20:00,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245836064] [2021-11-09 09:20:00,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-09 09:20:00,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-09 09:20:00,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:20:00,856 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 22 states have internal predecessors, (75), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:02,049 INFO L93 Difference]: Finished difference Result 159 states and 168 transitions. [2021-11-09 09:20:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:20:02,056 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 22 states have internal predecessors, (75), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2021-11-09 09:20:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:02,057 INFO L225 Difference]: With dead ends: 159 [2021-11-09 09:20:02,057 INFO L226 Difference]: Without dead ends: 159 [2021-11-09 09:20:02,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=1982, Unknown=0, NotChecked=0, Total=2256 [2021-11-09 09:20:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-09 09:20:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2021-11-09 09:20:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.1879699248120301) internal successors, (158), 147 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2021-11-09 09:20:02,064 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 90 [2021-11-09 09:20:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:02,064 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2021-11-09 09:20:02,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 22 states have internal predecessors, (75), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2021-11-09 09:20:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:20:02,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:02,066 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:02,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:02,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-09 09:20:02,278 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 905459815, now seen corresponding path program 2 times [2021-11-09 09:20:02,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:02,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128103827] [2021-11-09 09:20:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:02,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:02,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 70 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:20:03,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:03,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128103827] [2021-11-09 09:20:03,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128103827] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:03,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482050419] [2021-11-09 09:20:03,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:03,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:03,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:03,281 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:03,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 09:20:04,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:20:04,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:04,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-09 09:20:04,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:04,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:04,194 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:04,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:04,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:20:04,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:04,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:04,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:04,471 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:20:04,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 43 [2021-11-09 09:20:04,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:20:04,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:04,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-09 09:20:04,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373394695] [2021-11-09 09:20:04,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-09 09:20:04,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-09 09:20:04,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2021-11-09 09:20:04,530 INFO L87 Difference]: Start difference. First operand 153 states and 163 transitions. Second operand has 26 states, 25 states have (on average 3.04) internal successors, (76), 23 states have internal predecessors, (76), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:05,561 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2021-11-09 09:20:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:20:05,561 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.04) internal successors, (76), 23 states have internal predecessors, (76), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 91 [2021-11-09 09:20:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:05,562 INFO L225 Difference]: With dead ends: 162 [2021-11-09 09:20:05,562 INFO L226 Difference]: Without dead ends: 162 [2021-11-09 09:20:05,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=1664, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 09:20:05,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-09 09:20:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 155. [2021-11-09 09:20:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 149 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2021-11-09 09:20:05,567 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 91 [2021-11-09 09:20:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:05,568 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2021-11-09 09:20:05,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.04) internal successors, (76), 23 states have internal predecessors, (76), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2021-11-09 09:20:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:20:05,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:05,569 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:05,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:05,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-09 09:20:05,774 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:05,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash 905459816, now seen corresponding path program 2 times [2021-11-09 09:20:05,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:05,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944595985] [2021-11-09 09:20:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:05,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 60 proven. 46 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-09 09:20:07,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:07,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944595985] [2021-11-09 09:20:07,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944595985] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:07,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419178291] [2021-11-09 09:20:07,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:07,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:07,066 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:07,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 09:20:07,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:20:07,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:07,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-09 09:20:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:07,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:07,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:08,027 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:08,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:08,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:20:08,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:20:08,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:20:08,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:08,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:08,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:08,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:08,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:08,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:08,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:20:08,515 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-09 09:20:08,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 75 [2021-11-09 09:20:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:08,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:08,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:20:08,531 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-09 09:20:08,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2021-11-09 09:20:08,763 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-09 09:20:08,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-11-09 09:20:08,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-09 09:20:08,941 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-09 09:20:08,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 80 [2021-11-09 09:20:08,956 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-09 09:20:08,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 78 [2021-11-09 09:20:09,016 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-09 09:20:09,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 84 [2021-11-09 09:20:09,029 INFO L354 Elim1Store]: treesize reduction 59, result has 15.7 percent of original size [2021-11-09 09:20:09,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78 [2021-11-09 09:20:09,090 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-09 09:20:09,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 84 [2021-11-09 09:20:09,101 INFO L354 Elim1Store]: treesize reduction 59, result has 15.7 percent of original size [2021-11-09 09:20:09,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78 [2021-11-09 09:20:09,160 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-09 09:20:09,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 100 [2021-11-09 09:20:09,185 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-09 09:20:09,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 83 [2021-11-09 09:20:09,329 INFO L354 Elim1Store]: treesize reduction 76, result has 18.3 percent of original size [2021-11-09 09:20:09,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 108 [2021-11-09 09:20:09,354 INFO L354 Elim1Store]: treesize reduction 96, result has 17.9 percent of original size [2021-11-09 09:20:09,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 117 [2021-11-09 09:20:09,604 INFO L354 Elim1Store]: treesize reduction 180, result has 12.6 percent of original size [2021-11-09 09:20:09,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 223 treesize of output 127 [2021-11-09 09:20:09,637 INFO L354 Elim1Store]: treesize reduction 306, result has 10.5 percent of original size [2021-11-09 09:20:09,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 200 treesize of output 192 [2021-11-09 09:20:12,870 INFO L354 Elim1Store]: treesize reduction 193, result has 4.0 percent of original size [2021-11-09 09:20:12,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 204 treesize of output 103 [2021-11-09 09:20:12,902 INFO L354 Elim1Store]: treesize reduction 138, result has 2.1 percent of original size [2021-11-09 09:20:12,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 61 [2021-11-09 09:20:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-09 09:20:13,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419178291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:13,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:20:13,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20] total 43 [2021-11-09 09:20:13,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484475947] [2021-11-09 09:20:13,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-09 09:20:13,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-09 09:20:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1758, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 09:20:13,120 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand has 44 states, 43 states have (on average 3.1627906976744184) internal successors, (136), 40 states have internal predecessors, (136), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:20:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:16,744 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2021-11-09 09:20:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:20:16,745 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.1627906976744184) internal successors, (136), 40 states have internal predecessors, (136), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-09 09:20:16,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:16,746 INFO L225 Difference]: With dead ends: 192 [2021-11-09 09:20:16,746 INFO L226 Difference]: Without dead ends: 192 [2021-11-09 09:20:16,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=425, Invalid=3607, Unknown=0, NotChecked=0, Total=4032 [2021-11-09 09:20:16,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-09 09:20:16,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 177. [2021-11-09 09:20:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 157 states have (on average 1.197452229299363) internal successors, (188), 171 states have internal predecessors, (188), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 193 transitions. [2021-11-09 09:20:16,755 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 193 transitions. Word has length 91 [2021-11-09 09:20:16,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:16,755 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 193 transitions. [2021-11-09 09:20:16,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.1627906976744184) internal successors, (136), 40 states have internal predecessors, (136), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:20:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 193 transitions. [2021-11-09 09:20:16,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 09:20:16,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:16,757 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:16,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:16,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 09:20:16,974 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash -434968642, now seen corresponding path program 1 times [2021-11-09 09:20:16,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:16,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847733216] [2021-11-09 09:20:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:16,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-09 09:20:17,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:17,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847733216] [2021-11-09 09:20:17,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847733216] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:17,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6068207] [2021-11-09 09:20:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:17,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:17,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:17,898 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:17,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 09:20:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:18,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-09 09:20:18,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:18,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:19,037 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:19,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:19,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-09 09:20:19,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:19,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:19,283 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:20:19,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 47 [2021-11-09 09:20:19,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:20:19,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:19,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-09 09:20:19,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286669212] [2021-11-09 09:20:19,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-09 09:20:19,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:19,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-09 09:20:19,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:20:19,351 INFO L87 Difference]: Start difference. First operand 177 states and 193 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 22 states have internal predecessors, (79), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:20,379 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2021-11-09 09:20:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:20:20,380 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 22 states have internal predecessors, (79), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2021-11-09 09:20:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:20,381 INFO L225 Difference]: With dead ends: 171 [2021-11-09 09:20:20,381 INFO L226 Difference]: Without dead ends: 167 [2021-11-09 09:20:20,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=1499, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 09:20:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-09 09:20:20,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-09 09:20:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 147 states have (on average 1.2040816326530612) internal successors, (177), 161 states have internal predecessors, (177), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2021-11-09 09:20:20,387 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 92 [2021-11-09 09:20:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:20,387 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2021-11-09 09:20:20,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 22 states have internal predecessors, (79), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2021-11-09 09:20:20,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-09 09:20:20,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:20,389 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:20,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:20,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-09 09:20:20,602 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1712571253, now seen corresponding path program 2 times [2021-11-09 09:20:20,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:20,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862693046] [2021-11-09 09:20:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:20,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:20,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 70 proven. 58 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:20:22,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:22,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862693046] [2021-11-09 09:20:22,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862693046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:22,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293490423] [2021-11-09 09:20:22,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:22,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:22,028 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:22,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 09:20:22,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:20:22,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:22,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-09 09:20:23,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:23,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:23,081 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:23,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:23,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:20:23,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-09 09:20:23,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-09 09:20:23,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-09 09:20:23,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-09 09:20:23,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:23,481 INFO L354 Elim1Store]: treesize reduction 114, result has 18.6 percent of original size [2021-11-09 09:20:23,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 44 [2021-11-09 09:20:23,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.base] [2021-11-09 09:20:23,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:23,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-11-09 09:20:23,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560027710] [2021-11-09 09:20:23,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-09 09:20:23,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-09 09:20:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 09:20:23,542 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 28 states have internal predecessors, (92), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:25,838 INFO L93 Difference]: Finished difference Result 173 states and 186 transitions. [2021-11-09 09:20:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 09:20:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 28 states have internal predecessors, (92), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2021-11-09 09:20:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:25,839 INFO L225 Difference]: With dead ends: 173 [2021-11-09 09:20:25,839 INFO L226 Difference]: Without dead ends: 173 [2021-11-09 09:20:25,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 42 SyntacticMatches, 12 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=372, Invalid=2820, Unknown=0, NotChecked=0, Total=3192 [2021-11-09 09:20:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-09 09:20:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2021-11-09 09:20:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 147 states have (on average 1.1972789115646258) internal successors, (176), 161 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 181 transitions. [2021-11-09 09:20:25,843 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 181 transitions. Word has length 99 [2021-11-09 09:20:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:25,846 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 181 transitions. [2021-11-09 09:20:25,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 28 states have internal predecessors, (92), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 181 transitions. [2021-11-09 09:20:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-09 09:20:25,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:25,848 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:25,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-09 09:20:26,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:26,058 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash 818289680, now seen corresponding path program 2 times [2021-11-09 09:20:26,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:26,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645888302] [2021-11-09 09:20:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:26,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 67 proven. 65 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:20:27,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:27,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645888302] [2021-11-09 09:20:27,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645888302] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:27,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516480832] [2021-11-09 09:20:27,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:27,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:27,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:27,611 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:27,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-09 09:20:28,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:20:28,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:28,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-09 09:20:28,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:28,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:28,752 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:28,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:28,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:20:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:28,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:28,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:28,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:28,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:28,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2021-11-09 09:20:28,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:28,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:28,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:28,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2021-11-09 09:20:29,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:29,032 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-09 09:20:29,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 34 [2021-11-09 09:20:29,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.base] [2021-11-09 09:20:29,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:29,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-09 09:20:29,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019620568] [2021-11-09 09:20:29,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-09 09:20:29,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-09 09:20:29,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:20:29,088 INFO L87 Difference]: Start difference. First operand 167 states and 181 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 32 states have internal predecessors, (94), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:31,508 INFO L93 Difference]: Finished difference Result 173 states and 185 transitions. [2021-11-09 09:20:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-09 09:20:31,509 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 32 states have internal predecessors, (94), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2021-11-09 09:20:31,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:31,510 INFO L225 Difference]: With dead ends: 173 [2021-11-09 09:20:31,510 INFO L226 Difference]: Without dead ends: 173 [2021-11-09 09:20:31,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 42 SyntacticMatches, 11 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=413, Invalid=3619, Unknown=0, NotChecked=0, Total=4032 [2021-11-09 09:20:31,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-09 09:20:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2021-11-09 09:20:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 147 states have (on average 1.1904761904761905) internal successors, (175), 161 states have internal predecessors, (175), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 180 transitions. [2021-11-09 09:20:31,517 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 180 transitions. Word has length 101 [2021-11-09 09:20:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:31,517 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 180 transitions. [2021-11-09 09:20:31,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 32 states have internal predecessors, (94), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 180 transitions. [2021-11-09 09:20:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 09:20:31,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:31,519 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:31,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:31,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-09 09:20:31,719 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:31,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash -741407797, now seen corresponding path program 2 times [2021-11-09 09:20:31,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:31,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628862736] [2021-11-09 09:20:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:31,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 64 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:20:33,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:33,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628862736] [2021-11-09 09:20:33,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628862736] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:33,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910230035] [2021-11-09 09:20:33,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:33,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:33,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:33,228 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:33,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-09 09:20:34,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:20:34,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:34,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-09 09:20:34,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:34,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:34,476 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:34,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:34,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-09 09:20:34,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:34,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:34,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:34,780 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:20:34,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 47 [2021-11-09 09:20:34,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:20:34,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:34,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-11-09 09:20:34,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715825894] [2021-11-09 09:20:34,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-09 09:20:34,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:34,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-09 09:20:34,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:20:34,852 INFO L87 Difference]: Start difference. First operand 167 states and 180 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 30 states have internal predecessors, (95), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:37,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:37,187 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2021-11-09 09:20:37,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:20:37,189 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 30 states have internal predecessors, (95), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2021-11-09 09:20:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:37,190 INFO L225 Difference]: With dead ends: 173 [2021-11-09 09:20:37,190 INFO L226 Difference]: Without dead ends: 173 [2021-11-09 09:20:37,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 40 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=393, Invalid=3389, Unknown=0, NotChecked=0, Total=3782 [2021-11-09 09:20:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-09 09:20:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2021-11-09 09:20:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 147 states have (on average 1.183673469387755) internal successors, (174), 161 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 179 transitions. [2021-11-09 09:20:37,196 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 179 transitions. Word has length 102 [2021-11-09 09:20:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:37,197 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 179 transitions. [2021-11-09 09:20:37,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 30 states have internal predecessors, (95), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 179 transitions. [2021-11-09 09:20:37,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:20:37,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:37,198 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:37,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:37,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:37,414 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:37,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash 398944309, now seen corresponding path program 2 times [2021-11-09 09:20:37,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:37,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776563279] [2021-11-09 09:20:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:37,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 66 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:20:39,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:39,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776563279] [2021-11-09 09:20:39,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776563279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:39,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52807161] [2021-11-09 09:20:39,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:39,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:39,014 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:39,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-09 09:20:40,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:20:40,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:40,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-09 09:20:40,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:40,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:40,161 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:40,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:40,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:20:40,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:40,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-09 09:20:40,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:40,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-09 09:20:40,443 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-09 09:20:40,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2021-11-09 09:20:40,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.base] [2021-11-09 09:20:40,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:40,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-11-09 09:20:40,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262284843] [2021-11-09 09:20:40,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 09:20:40,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 09:20:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1220, Unknown=0, NotChecked=0, Total=1332 [2021-11-09 09:20:40,512 INFO L87 Difference]: Start difference. First operand 167 states and 179 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 31 states have internal predecessors, (96), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:42,551 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2021-11-09 09:20:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-09 09:20:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 31 states have internal predecessors, (96), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2021-11-09 09:20:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:42,552 INFO L225 Difference]: With dead ends: 173 [2021-11-09 09:20:42,552 INFO L226 Difference]: Without dead ends: 173 [2021-11-09 09:20:42,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=391, Invalid=3031, Unknown=0, NotChecked=0, Total=3422 [2021-11-09 09:20:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-09 09:20:42,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2021-11-09 09:20:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 147 states have (on average 1.1768707482993197) internal successors, (173), 161 states have internal predecessors, (173), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 178 transitions. [2021-11-09 09:20:42,559 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 178 transitions. Word has length 103 [2021-11-09 09:20:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:42,559 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 178 transitions. [2021-11-09 09:20:42,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 31 states have internal predecessors, (96), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 178 transitions. [2021-11-09 09:20:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 09:20:42,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:42,561 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:42,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:42,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-09 09:20:42,781 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2098516272, now seen corresponding path program 2 times [2021-11-09 09:20:42,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:42,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832853221] [2021-11-09 09:20:42,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:42,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:43,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 40 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:20:44,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:44,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832853221] [2021-11-09 09:20:44,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832853221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:44,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182843353] [2021-11-09 09:20:44,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:44,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:44,153 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:44,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-09 09:20:45,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:20:45,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:45,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-09 09:20:45,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:45,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:20:45,331 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:20:45,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 09:20:45,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-09 09:20:45,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:45,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:45,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:20:45,607 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-09 09:20:45,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 47 [2021-11-09 09:20:45,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:20:45,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:45,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-09 09:20:45,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817250038] [2021-11-09 09:20:45,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-09 09:20:45,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:45,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-09 09:20:45,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1376, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:20:45,685 INFO L87 Difference]: Start difference. First operand 167 states and 178 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 32 states have internal predecessors, (99), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:47,707 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2021-11-09 09:20:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:20:47,708 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 32 states have internal predecessors, (99), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2021-11-09 09:20:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:47,709 INFO L225 Difference]: With dead ends: 158 [2021-11-09 09:20:47,709 INFO L226 Difference]: Without dead ends: 154 [2021-11-09 09:20:47,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=337, Invalid=2855, Unknown=0, NotChecked=0, Total=3192 [2021-11-09 09:20:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-09 09:20:47,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-11-09 09:20:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.1729323308270676) internal successors, (156), 147 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 161 transitions. [2021-11-09 09:20:47,714 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 161 transitions. Word has length 104 [2021-11-09 09:20:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:47,714 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 161 transitions. [2021-11-09 09:20:47,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 32 states have internal predecessors, (99), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:47,715 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 161 transitions. [2021-11-09 09:20:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 09:20:47,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:47,715 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:47,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:47,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-09 09:20:47,934 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:47,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1133396496, now seen corresponding path program 3 times [2021-11-09 09:20:47,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:47,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704932846] [2021-11-09 09:20:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:47,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:48,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 72 proven. 71 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:20:49,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:49,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704932846] [2021-11-09 09:20:49,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704932846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:49,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838055291] [2021-11-09 09:20:49,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:20:49,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:49,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:49,428 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:49,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 09:20:50,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 09:20:50,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:50,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-09 09:20:50,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:51,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 09:20:51,093 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-09 09:20:51,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:20:51,178 INFO L354 Elim1Store]: treesize reduction 72, result has 27.3 percent of original size [2021-11-09 09:20:51,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 47 [2021-11-09 09:20:51,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [dll_create_~head~0.offset] [2021-11-09 09:20:51,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:51,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-09 09:20:51,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304118910] [2021-11-09 09:20:51,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-09 09:20:51,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:51,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-09 09:20:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:20:51,274 INFO L87 Difference]: Start difference. First operand 153 states and 161 transitions. Second operand has 36 states, 35 states have (on average 2.8) internal successors, (98), 33 states have internal predecessors, (98), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:53,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:53,486 INFO L93 Difference]: Finished difference Result 157 states and 164 transitions. [2021-11-09 09:20:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:20:53,486 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.8) internal successors, (98), 33 states have internal predecessors, (98), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2021-11-09 09:20:53,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:53,487 INFO L225 Difference]: With dead ends: 157 [2021-11-09 09:20:53,487 INFO L226 Difference]: Without dead ends: 157 [2021-11-09 09:20:53,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=361, Invalid=3299, Unknown=0, NotChecked=0, Total=3660 [2021-11-09 09:20:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-09 09:20:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2021-11-09 09:20:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 135 states have (on average 1.1777777777777778) internal successors, (159), 149 states have internal predecessors, (159), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:20:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2021-11-09 09:20:53,491 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 105 [2021-11-09 09:20:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:53,491 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2021-11-09 09:20:53,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.8) internal successors, (98), 33 states have internal predecessors, (98), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:20:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2021-11-09 09:20:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 09:20:53,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:53,492 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:53,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-11-09 09:20:53,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:53,714 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:20:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1133396497, now seen corresponding path program 3 times [2021-11-09 09:20:53,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:53,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285805142] [2021-11-09 09:20:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:53,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:54,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:20:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 40 proven. 105 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:20:55,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:55,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285805142] [2021-11-09 09:20:55,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285805142] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:55,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878988339] [2021-11-09 09:20:55,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:20:55,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:55,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:55,499 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:55,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-09 09:21:02,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-09 09:21:02,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:21:02,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-09 09:21:02,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:21:02,592 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:21:02,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:21:02,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:21:02,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:21:02,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:02,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:21:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:02,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:21:02,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:02,884 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-09 09:21:02,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 132 treesize of output 101 [2021-11-09 09:21:02,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:02,903 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-09 09:21:02,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 103 [2021-11-09 09:21:03,152 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-09 09:21:03,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 22 treesize of output 32 [2021-11-09 09:21:03,205 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-09 09:21:03,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-09 09:21:03,430 INFO L354 Elim1Store]: treesize reduction 83, result has 13.5 percent of original size [2021-11-09 09:21:03,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 105 [2021-11-09 09:21:03,447 INFO L354 Elim1Store]: treesize reduction 73, result has 13.1 percent of original size [2021-11-09 09:21:03,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 98 [2021-11-09 09:21:03,618 INFO L354 Elim1Store]: treesize reduction 89, result has 12.7 percent of original size [2021-11-09 09:21:03,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 109 [2021-11-09 09:21:03,631 INFO L354 Elim1Store]: treesize reduction 79, result has 12.2 percent of original size [2021-11-09 09:21:03,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 98 [2021-11-09 09:21:03,712 INFO L354 Elim1Store]: treesize reduction 89, result has 12.7 percent of original size [2021-11-09 09:21:03,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 109 [2021-11-09 09:21:03,726 INFO L354 Elim1Store]: treesize reduction 79, result has 12.2 percent of original size [2021-11-09 09:21:03,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 98 [2021-11-09 09:21:03,795 INFO L354 Elim1Store]: treesize reduction 73, result has 13.1 percent of original size [2021-11-09 09:21:03,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 120 [2021-11-09 09:21:03,809 INFO L354 Elim1Store]: treesize reduction 83, result has 13.5 percent of original size [2021-11-09 09:21:03,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 108 [2021-11-09 09:21:03,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:03,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:03,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:04,003 INFO L354 Elim1Store]: treesize reduction 114, result has 14.3 percent of original size [2021-11-09 09:21:04,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 141 [2021-11-09 09:21:04,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:04,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:04,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:04,039 INFO L354 Elim1Store]: treesize reduction 126, result has 14.3 percent of original size [2021-11-09 09:21:04,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 138 treesize of output 129 [2021-11-09 09:21:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:04,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:04,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:04,370 INFO L354 Elim1Store]: treesize reduction 242, result has 20.4 percent of original size [2021-11-09 09:21:04,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 282 treesize of output 196 [2021-11-09 09:21:04,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:04,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:04,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:04,440 INFO L354 Elim1Store]: treesize reduction 228, result has 18.6 percent of original size [2021-11-09 09:21:04,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 226 treesize of output 195 [2021-11-09 09:21:08,383 INFO L354 Elim1Store]: treesize reduction 44, result has 27.9 percent of original size [2021-11-09 09:21:08,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 196 treesize of output 200 [2021-11-09 09:21:08,409 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-09 09:21:08,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 188 treesize of output 193 [2021-11-09 09:21:13,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:13,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:13,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:13,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:13,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:13,624 INFO L354 Elim1Store]: treesize reduction 220, result has 7.9 percent of original size [2021-11-09 09:21:13,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 230 treesize of output 206 [2021-11-09 09:21:13,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:13,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:13,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:13,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:13,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:13,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:13,672 INFO L354 Elim1Store]: treesize reduction 244, result has 8.6 percent of original size [2021-11-09 09:21:13,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 215 treesize of output 189 [2021-11-09 09:21:16,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:16,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:16,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:16,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:16,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:16,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:16,487 INFO L354 Elim1Store]: treesize reduction 232, result has 7.6 percent of original size [2021-11-09 09:21:16,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 238 treesize of output 210 [2021-11-09 09:21:16,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:16,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:16,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:16,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:16,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:16,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:16,567 INFO L354 Elim1Store]: treesize reduction 256, result has 8.2 percent of original size [2021-11-09 09:21:16,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 219 treesize of output 189 [2021-11-09 09:21:19,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:19,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:19,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:19,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:19,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:19,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:19,355 INFO L354 Elim1Store]: treesize reduction 256, result has 8.2 percent of original size [2021-11-09 09:21:19,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 238 treesize of output 208 [2021-11-09 09:21:19,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:19,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:19,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:19,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:19,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:19,437 INFO L354 Elim1Store]: treesize reduction 232, result has 7.6 percent of original size [2021-11-09 09:21:19,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 219 treesize of output 191 [2021-11-09 09:21:22,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:22,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:22,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:22,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:22,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:22,332 INFO L354 Elim1Store]: treesize reduction 260, result has 10.3 percent of original size [2021-11-09 09:21:22,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 226 treesize of output 211 [2021-11-09 09:21:22,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:22,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:22,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:22,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:22,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:22,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:22,390 INFO L354 Elim1Store]: treesize reduction 248, result has 10.8 percent of original size [2021-11-09 09:21:22,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 222 treesize of output 209 [2021-11-09 09:21:25,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:25,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:25,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:25,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:25,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:25,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:25,520 INFO L354 Elim1Store]: treesize reduction 330, result has 10.6 percent of original size [2021-11-09 09:21:25,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 244 treesize of output 232 [2021-11-09 09:21:25,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:25,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:25,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:25,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:25,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:25,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:25,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:25,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:25,596 INFO L354 Elim1Store]: treesize reduction 348, result has 11.0 percent of original size [2021-11-09 09:21:25,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 256 treesize of output 246 [2021-11-09 09:21:26,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:26,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:26,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:26,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:26,785 INFO L354 Elim1Store]: treesize reduction 704, result has 8.1 percent of original size [2021-11-09 09:21:26,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 34 case distinctions, treesize of input 547 treesize of output 327 [2021-11-09 09:21:26,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:26,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:26,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:21:26,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:21:26,950 INFO L354 Elim1Store]: treesize reduction 744, result has 9.0 percent of original size [2021-11-09 09:21:26,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 34 case distinctions, treesize of input 433 treesize of output 295 [2021-11-09 09:25:13,508 INFO L354 Elim1Store]: treesize reduction 578, result has 3.2 percent of original size [2021-11-09 09:25:13,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 345 treesize of output 216 [2021-11-09 09:25:13,622 INFO L354 Elim1Store]: treesize reduction 446, result has 1.5 percent of original size [2021-11-09 09:25:13,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 185 treesize of output 114 [2021-11-09 09:25:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 61 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 09:25:14,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878988339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:25:14,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:25:14,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 32] total 66 [2021-11-09 09:25:14,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887363473] [2021-11-09 09:25:14,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-09 09:25:14,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:25:14,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-09 09:25:14,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=4194, Unknown=2, NotChecked=0, Total=4422 [2021-11-09 09:25:14,093 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand has 67 states, 66 states have (on average 2.803030303030303) internal successors, (185), 63 states have internal predecessors, (185), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:29:00,861 WARN L207 SmtUtils]: Spent 5.30 s on a formula simplification. DAG size of input: 139 DAG size of output: 120 [2021-11-09 09:29:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:29:36,715 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2021-11-09 09:29:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-09 09:29:36,716 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.803030303030303) internal successors, (185), 63 states have internal predecessors, (185), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 105 [2021-11-09 09:29:36,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:29:36,717 INFO L225 Difference]: With dead ends: 187 [2021-11-09 09:29:36,718 INFO L226 Difference]: Without dead ends: 187 [2021-11-09 09:29:36,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 149.4s TimeCoverageRelationStatistics Valid=897, Invalid=9179, Unknown=24, NotChecked=0, Total=10100 [2021-11-09 09:29:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-09 09:29:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 181. [2021-11-09 09:29:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 161 states have (on average 1.186335403726708) internal successors, (191), 175 states have internal predecessors, (191), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:29:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 196 transitions. [2021-11-09 09:29:36,726 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 196 transitions. Word has length 105 [2021-11-09 09:29:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:29:36,727 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 196 transitions. [2021-11-09 09:29:36,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.803030303030303) internal successors, (185), 63 states have internal predecessors, (185), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:29:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 196 transitions. [2021-11-09 09:29:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-09 09:29:36,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:29:36,728 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:29:36,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-09 09:29:36,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-09 09:29:36,939 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-11-09 09:29:36,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:29:36,939 INFO L85 PathProgramCache]: Analyzing trace with hash -90796748, now seen corresponding path program 3 times [2021-11-09 09:29:36,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:29:36,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103063547] [2021-11-09 09:29:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:29:36,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:29:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:29:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:29:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:29:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 09:29:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:29:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:29:40,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:29:40,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103063547] [2021-11-09 09:29:40,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103063547] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:29:40,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538025818] [2021-11-09 09:29:40,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:29:40,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:29:40,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:29:40,617 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:29:40,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d639bbc-b99e-49aa-874d-3d3c23b7e075/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-09 09:30:00,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-09 09:30:00,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:30:00,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 156 conjunts are in the unsatisfiable core [2021-11-09 09:30:00,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:30:00,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:30:00,798 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:30:00,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:30:00,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:30:00,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:00,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-09 09:30:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:00,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:00,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-09 09:30:01,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-09 09:30:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-09 09:30:01,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,148 INFO L354 Elim1Store]: treesize reduction 114, result has 18.6 percent of original size [2021-11-09 09:30:01,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2021-11-09 09:30:01,319 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:30:01,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-09 09:30:01,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:30:01,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-09 09:30:01,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2021-11-09 09:30:01,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 62 [2021-11-09 09:30:01,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:30:01,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:01,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2021-11-09 09:30:01,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-09 09:30:02,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:30:02,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-09 09:30:02,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2021-11-09 09:30:02,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:02,428 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-09 09:30:02,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 131 [2021-11-09 09:30:02,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:02,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:02,444 INFO L354 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2021-11-09 09:30:02,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 182 treesize of output 167 [2021-11-09 09:30:02,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:02,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:02,460 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-09 09:30:02,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 149 treesize of output 145 [2021-11-09 09:30:02,853 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:30:02,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-09 09:30:02,904 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-09 09:30:02,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-09 09:30:03,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,222 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-09 09:30:03,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 158 [2021-11-09 09:30:03,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,235 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:30:03,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 149 treesize of output 118 [2021-11-09 09:30:03,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,256 INFO L354 Elim1Store]: treesize reduction 73, result has 13.1 percent of original size [2021-11-09 09:30:03,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 134 treesize of output 148 [2021-11-09 09:30:03,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,515 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-09 09:30:03,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 171 [2021-11-09 09:30:03,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,548 INFO L354 Elim1Store]: treesize reduction 132, result has 14.8 percent of original size [2021-11-09 09:30:03,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 162 treesize of output 179 [2021-11-09 09:30:03,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,558 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:30:03,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 158 treesize of output 123 [2021-11-09 09:30:03,854 INFO L354 Elim1Store]: treesize reduction 59, result has 15.7 percent of original size [2021-11-09 09:30:03,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 180 [2021-11-09 09:30:03,870 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-09 09:30:03,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 171 treesize of output 136 [2021-11-09 09:30:03,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:03,918 INFO L354 Elim1Store]: treesize reduction 208, result has 14.0 percent of original size [2021-11-09 09:30:03,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 152 treesize of output 172 [2021-11-09 09:30:04,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,208 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-09 09:30:04,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 193 treesize of output 198 [2021-11-09 09:30:04,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,220 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:30:04,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 169 [2021-11-09 09:30:04,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,264 INFO L354 Elim1Store]: treesize reduction 189, result has 5.5 percent of original size [2021-11-09 09:30:04,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 185 treesize of output 193 [2021-11-09 09:30:04,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,608 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-09 09:30:04,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 211 treesize of output 219 [2021-11-09 09:30:04,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,633 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-09 09:30:04,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 207 treesize of output 190 [2021-11-09 09:30:04,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:04,687 INFO L354 Elim1Store]: treesize reduction 234, result has 8.9 percent of original size [2021-11-09 09:30:04,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 203 treesize of output 211 [2021-11-09 09:30:05,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,267 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-11-09 09:30:05,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 382 treesize of output 214 [2021-11-09 09:30:05,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,297 INFO L354 Elim1Store]: treesize reduction 208, result has 11.5 percent of original size [2021-11-09 09:30:05,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 359 treesize of output 351 [2021-11-09 09:30:05,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:05,357 INFO L354 Elim1Store]: treesize reduction 385, result has 2.3 percent of original size [2021-11-09 09:30:05,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 336 treesize of output 330 [2021-11-09 09:30:06,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,059 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-11-09 09:30:06,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 41 [2021-11-09 09:30:06,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2021-11-09 09:30:06,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,545 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-09 09:30:06,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 322 treesize of output 208 [2021-11-09 09:30:06,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,576 INFO L354 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2021-11-09 09:30:06,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 286 treesize of output 286 [2021-11-09 09:30:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:06,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:06,667 INFO L354 Elim1Store]: treesize reduction 364, result has 6.9 percent of original size [2021-11-09 09:30:06,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 271 treesize of output 294 [2021-11-09 09:30:07,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,076 INFO L354 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2021-11-09 09:30:07,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 318 treesize of output 314 [2021-11-09 09:30:07,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,095 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-09 09:30:07,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 299 treesize of output 202 [2021-11-09 09:30:07,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:07,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:07,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,166 INFO L354 Elim1Store]: treesize reduction 392, result has 6.4 percent of original size [2021-11-09 09:30:07,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 280 treesize of output 306 [2021-11-09 09:30:07,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,613 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-09 09:30:07,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 327 treesize of output 230 [2021-11-09 09:30:07,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:07,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:07,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:07,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,707 INFO L354 Elim1Store]: treesize reduction 476, result has 6.1 percent of original size [2021-11-09 09:30:07,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 47 case distinctions, treesize of input 329 treesize of output 358 [2021-11-09 09:30:07,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:07,725 INFO L354 Elim1Store]: treesize reduction 108, result has 0.9 percent of original size [2021-11-09 09:30:07,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 325 treesize of output 321 [2021-11-09 09:30:08,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,232 INFO L354 Elim1Store]: treesize reduction 81, result has 8.0 percent of original size [2021-11-09 09:30:08,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 351 treesize of output 248 [2021-11-09 09:30:08,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,279 INFO L354 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2021-11-09 09:30:08,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 318 treesize of output 329 [2021-11-09 09:30:08,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,348 INFO L354 Elim1Store]: treesize reduction 380, result has 0.3 percent of original size [2021-11-09 09:30:08,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 51 case distinctions, treesize of input 314 treesize of output 331 [2021-11-09 09:30:08,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,891 INFO L354 Elim1Store]: treesize reduction 176, result has 13.3 percent of original size [2021-11-09 09:30:08,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 332 treesize of output 346 [2021-11-09 09:30:08,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,959 INFO L354 Elim1Store]: treesize reduction 104, result has 12.6 percent of original size [2021-11-09 09:30:08,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 328 treesize of output 261 [2021-11-09 09:30:08,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:08,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:08,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:09,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:09,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:09,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:09,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:09,040 INFO L354 Elim1Store]: treesize reduction 284, result has 0.4 percent of original size [2021-11-09 09:30:09,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 14 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 51 case distinctions, treesize of input 276 treesize of output 293 [2021-11-09 09:30:09,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:09,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:09,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:09,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:09,943 INFO L354 Elim1Store]: treesize reduction 532, result has 9.4 percent of original size [2021-11-09 09:30:09,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 26 case distinctions, treesize of input 524 treesize of output 352 [2021-11-09 09:30:09,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:09,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:09,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:09,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:10,069 INFO L354 Elim1Store]: treesize reduction 536, result has 10.5 percent of original size [2021-11-09 09:30:10,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 26 case distinctions, treesize of input 489 treesize of output 421 [2021-11-09 09:30:10,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:10,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:10,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:10,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:10,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:30:10,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:10,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:30:10,363 INFO L354 Elim1Store]: treesize reduction 1928, result has 7.1 percent of original size [2021-11-09 09:30:10,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 454 treesize of output 435 [2021-11-09 09:31:12,619 INFO L354 Elim1Store]: treesize reduction 82, result has 3.5 percent of original size [2021-11-09 09:31:12,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 440 treesize of output 423 [2021-11-09 09:31:20,696 INFO L354 Elim1Store]: treesize reduction 578, result has 3.8 percent of original size [2021-11-09 09:31:20,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 454 treesize of output 299 [2021-11-09 09:31:20,780 INFO L354 Elim1Store]: treesize reduction 318, result has 0.9 percent of original size [2021-11-09 09:31:20,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 246 treesize of output 168 [2021-11-09 09:31:22,140 INFO L354 Elim1Store]: treesize reduction 722, result has 0.1 percent of original size [2021-11-09 09:31:22,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 138 treesize of output 76 [2021-11-09 09:31:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 43 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:31:22,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538025818] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:31:22,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:31:22,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 49] total 85 [2021-11-09 09:31:22,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265051874] [2021-11-09 09:31:22,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-09 09:31:22,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:31:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-09 09:31:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=6722, Unknown=17, NotChecked=0, Total=7140 [2021-11-09 09:31:22,170 INFO L87 Difference]: Start difference. First operand 181 states and 196 transitions. Second operand has 85 states, 85 states have (on average 2.3529411764705883) internal successors, (200), 81 states have internal predecessors, (200), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3)