./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer --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 9aa86be9eb0317030839433587db2b1c5b5e93d6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer --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 9aa86be9eb0317030839433587db2b1c5b5e93d6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:11:43,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:11:43,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:11:43,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:11:43,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:11:43,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:11:43,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:11:43,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:11:43,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:11:43,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:11:43,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:11:43,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:11:43,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:11:43,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:11:43,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:11:43,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:11:43,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:11:43,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:11:43,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:11:43,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:11:43,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:11:43,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:11:43,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:11:43,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:11:43,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:11:43,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:11:43,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:11:43,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:11:43,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:11:43,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:11:43,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:11:43,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:11:43,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:11:43,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:11:43,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:11:43,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:11:43,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:11:43,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:11:43,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:11:43,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:11:43,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:11:43,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 22:11:43,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:11:43,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:11:43,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:11:43,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:11:43,932 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:11:43,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:11:43,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:11:43,933 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:11:43,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:11:43,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:11:43,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:11:43,934 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 22:11:43,934 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 22:11:43,934 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 22:11:43,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:11:43,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 22:11:43,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:11:43,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:11:43,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:11:43,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:11:43,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:11:43,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:11:43,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:11:43,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:11:43,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:11:43,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:11:43,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:11:43,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:11:43,938 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-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aa86be9eb0317030839433587db2b1c5b5e93d6 [2020-11-29 22:11:44,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:11:44,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:11:44,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:11:44,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:11:44,260 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:11:44,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-11-29 22:11:44,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data/b2fb8cf81/f207b2420d0c449e98000b5b7e10f3d0/FLAG6ad2633e3 [2020-11-29 22:11:44,882 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:11:44,888 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-11-29 22:11:44,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data/b2fb8cf81/f207b2420d0c449e98000b5b7e10f3d0/FLAG6ad2633e3 [2020-11-29 22:11:45,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data/b2fb8cf81/f207b2420d0c449e98000b5b7e10f3d0 [2020-11-29 22:11:45,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:11:45,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 22:11:45,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:11:45,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:11:45,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:11:45,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bef3f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45, skipping insertion in model container [2020-11-29 22:11:45,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:11:45,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:11:45,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:11:45,579 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:11:45,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:11:45,670 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:11:45,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45 WrapperNode [2020-11-29 22:11:45,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:11:45,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:11:45,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:11:45,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:11:45,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (1/1) ... [2020-11-29 22:11:45,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:11:45,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:11:45,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:11:45,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:11:45,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:11:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 22:11:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:11:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 22:11:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 22:11:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 22:11:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 22:11:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 22:11:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 22:11:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 22:11:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 22:11:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 22:11:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 22:11:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 22:11:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 22:11:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 22:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 22:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 22:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 22:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 22:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 22:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 22:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 22:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 22:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 22:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 22:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 22:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 22:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 22:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 22:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 22:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 22:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 22:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 22:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 22:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 22:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 22:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 22:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 22:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 22:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 22:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 22:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 22:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 22:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 22:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 22:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 22:11:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 22:11:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 22:11:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 22:11:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 22:11:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 22:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 22:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 22:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 22:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 22:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 22:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 22:11:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 22:11:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-29 22:11:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 22:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 22:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 22:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 22:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 22:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 22:11:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 22:11:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 22:11:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 22:11:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 22:11:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 22:11:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 22:11:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 22:11:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 22:11:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 22:11:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 22:11:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 22:11:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 22:11:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 22:11:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 22:11:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 22:11:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 22:11:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 22:11:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 22:11:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 22:11:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 22:11:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 22:11:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 22:11:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 22:11:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 22:11:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 22:11:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 22:11:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 22:11:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 22:11:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 22:11:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 22:11:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 22:11:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 22:11:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 22:11:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 22:11:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 22:11:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 22:11:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 22:11:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 22:11:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 22:11:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 22:11:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 22:11:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 22:11:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 22:11:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 22:11:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 22:11:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 22:11:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 22:11:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:11:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 22:11:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 22:11:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 22:11:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:11:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 22:11:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:11:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:11:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 22:11:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:11:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:11:46,743 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:11:46,743 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 22:11:46,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:11:46 BoogieIcfgContainer [2020-11-29 22:11:46,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:11:46,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:11:46,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:11:46,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:11:46,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:11:45" (1/3) ... [2020-11-29 22:11:46,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f56f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:11:46, skipping insertion in model container [2020-11-29 22:11:46,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:45" (2/3) ... [2020-11-29 22:11:46,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f56f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:11:46, skipping insertion in model container [2020-11-29 22:11:46,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:11:46" (3/3) ... [2020-11-29 22:11:46,763 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-11-29 22:11:46,773 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:11:46,778 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2020-11-29 22:11:46,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2020-11-29 22:11:46,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:11:46,804 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 22:11:46,804 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:11:46,804 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:11:46,804 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:11:46,804 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:11:46,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:11:46,805 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:11:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-11-29 22:11:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:11:46,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:46,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:46,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1063257867, now seen corresponding path program 1 times [2020-11-29 22:11:46,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:46,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901887558] [2020-11-29 22:11:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:47,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:47,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901887558] [2020-11-29 22:11:47,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:47,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:11:47,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175998762] [2020-11-29 22:11:47,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:11:47,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:47,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:11:47,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:11:47,126 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-11-29 22:11:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:47,636 INFO L93 Difference]: Finished difference Result 191 states and 204 transitions. [2020-11-29 22:11:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:11:47,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 22:11:47,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:47,658 INFO L225 Difference]: With dead ends: 191 [2020-11-29 22:11:47,665 INFO L226 Difference]: Without dead ends: 187 [2020-11-29 22:11:47,667 INFO L677 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 [2020-11-29 22:11:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-29 22:11:47,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 159. [2020-11-29 22:11:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-29 22:11:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-11-29 22:11:47,752 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 7 [2020-11-29 22:11:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:47,752 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-11-29 22:11:47,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:11:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-11-29 22:11:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:11:47,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:47,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:47,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:11:47,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:47,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1063257868, now seen corresponding path program 1 times [2020-11-29 22:11:47,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:47,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243815770] [2020-11-29 22:11:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:47,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243815770] [2020-11-29 22:11:47,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:47,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:11:47,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428841773] [2020-11-29 22:11:47,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:11:47,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:47,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:11:47,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:11:47,867 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 4 states. [2020-11-29 22:11:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:48,334 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2020-11-29 22:11:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:11:48,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 22:11:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:48,337 INFO L225 Difference]: With dead ends: 156 [2020-11-29 22:11:48,337 INFO L226 Difference]: Without dead ends: 156 [2020-11-29 22:11:48,338 INFO L677 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 [2020-11-29 22:11:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-29 22:11:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-11-29 22:11:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 22:11:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2020-11-29 22:11:48,362 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 7 [2020-11-29 22:11:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:48,363 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2020-11-29 22:11:48,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:11:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2020-11-29 22:11:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:11:48,365 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:48,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:48,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:11:48,366 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:48,368 INFO L82 PathProgramCache]: Analyzing trace with hash -224884273, now seen corresponding path program 1 times [2020-11-29 22:11:48,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:48,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796551678] [2020-11-29 22:11:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:48,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796551678] [2020-11-29 22:11:48,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:48,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:11:48,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182528288] [2020-11-29 22:11:48,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:11:48,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:48,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:11:48,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:11:48,479 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand 4 states. [2020-11-29 22:11:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:48,891 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2020-11-29 22:11:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:11:48,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 22:11:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:48,893 INFO L225 Difference]: With dead ends: 155 [2020-11-29 22:11:48,893 INFO L226 Difference]: Without dead ends: 155 [2020-11-29 22:11:48,894 INFO L677 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 [2020-11-29 22:11:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-29 22:11:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2020-11-29 22:11:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-29 22:11:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2020-11-29 22:11:48,904 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 11 [2020-11-29 22:11:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:48,904 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2020-11-29 22:11:48,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:11:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2020-11-29 22:11:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:11:48,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:48,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:48,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:11:48,906 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:48,906 INFO L82 PathProgramCache]: Analyzing trace with hash -224884272, now seen corresponding path program 1 times [2020-11-29 22:11:48,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:48,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667272364] [2020-11-29 22:11:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:49,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:49,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667272364] [2020-11-29 22:11:49,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:49,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:11:49,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271731141] [2020-11-29 22:11:49,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:11:49,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:49,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:11:49,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:11:49,027 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand 4 states. [2020-11-29 22:11:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:49,327 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2020-11-29 22:11:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:11:49,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 22:11:49,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:49,329 INFO L225 Difference]: With dead ends: 168 [2020-11-29 22:11:49,329 INFO L226 Difference]: Without dead ends: 168 [2020-11-29 22:11:49,329 INFO L677 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 [2020-11-29 22:11:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-29 22:11:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2020-11-29 22:11:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-29 22:11:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2020-11-29 22:11:49,341 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 11 [2020-11-29 22:11:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:49,341 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2020-11-29 22:11:49,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:11:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2020-11-29 22:11:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:11:49,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:49,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:49,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:11:49,343 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:49,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:49,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1814833992, now seen corresponding path program 1 times [2020-11-29 22:11:49,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:49,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53127375] [2020-11-29 22:11:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:49,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:49,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53127375] [2020-11-29 22:11:49,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:49,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:11:49,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060380728] [2020-11-29 22:11:49,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:11:49,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:49,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:11:49,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:11:49,488 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 5 states. [2020-11-29 22:11:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:49,892 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2020-11-29 22:11:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:11:49,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-29 22:11:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:49,894 INFO L225 Difference]: With dead ends: 156 [2020-11-29 22:11:49,894 INFO L226 Difference]: Without dead ends: 156 [2020-11-29 22:11:49,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-29 22:11:49,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2020-11-29 22:11:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 22:11:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2020-11-29 22:11:49,903 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 17 [2020-11-29 22:11:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:49,904 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2020-11-29 22:11:49,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:11:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2020-11-29 22:11:49,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:11:49,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:49,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:49,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:11:49,906 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:49,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:49,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1814833991, now seen corresponding path program 1 times [2020-11-29 22:11:49,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:49,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415611534] [2020-11-29 22:11:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:50,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415611534] [2020-11-29 22:11:50,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:50,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:11:50,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817228653] [2020-11-29 22:11:50,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:11:50,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:11:50,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:11:50,045 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand 5 states. [2020-11-29 22:11:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:50,419 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2020-11-29 22:11:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:11:50,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-29 22:11:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:50,422 INFO L225 Difference]: With dead ends: 180 [2020-11-29 22:11:50,422 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 22:11:50,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 22:11:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2020-11-29 22:11:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-29 22:11:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2020-11-29 22:11:50,428 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 17 [2020-11-29 22:11:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:50,429 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2020-11-29 22:11:50,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:11:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2020-11-29 22:11:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:11:50,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:50,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:50,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:11:50,435 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:50,436 INFO L82 PathProgramCache]: Analyzing trace with hash -298743653, now seen corresponding path program 1 times [2020-11-29 22:11:50,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:50,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474690122] [2020-11-29 22:11:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:50,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474690122] [2020-11-29 22:11:50,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:50,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:11:50,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069583901] [2020-11-29 22:11:50,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:11:50,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:11:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:50,556 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand 6 states. [2020-11-29 22:11:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:51,052 INFO L93 Difference]: Finished difference Result 201 states and 227 transitions. [2020-11-29 22:11:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:11:51,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 22:11:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:51,054 INFO L225 Difference]: With dead ends: 201 [2020-11-29 22:11:51,054 INFO L226 Difference]: Without dead ends: 201 [2020-11-29 22:11:51,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:11:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-11-29 22:11:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 150. [2020-11-29 22:11:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-29 22:11:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2020-11-29 22:11:51,060 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 19 [2020-11-29 22:11:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:51,060 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2020-11-29 22:11:51,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:11:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2020-11-29 22:11:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:11:51,061 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:51,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:51,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:11:51,062 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:51,063 INFO L82 PathProgramCache]: Analyzing trace with hash -298743652, now seen corresponding path program 1 times [2020-11-29 22:11:51,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:51,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830328583] [2020-11-29 22:11:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:51,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:51,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830328583] [2020-11-29 22:11:51,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:51,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:11:51,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190216649] [2020-11-29 22:11:51,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:11:51,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:51,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:11:51,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:51,210 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand 6 states. [2020-11-29 22:11:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:51,894 INFO L93 Difference]: Finished difference Result 224 states and 251 transitions. [2020-11-29 22:11:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:11:51,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 22:11:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:51,896 INFO L225 Difference]: With dead ends: 224 [2020-11-29 22:11:51,896 INFO L226 Difference]: Without dead ends: 224 [2020-11-29 22:11:51,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:11:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-29 22:11:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 149. [2020-11-29 22:11:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-29 22:11:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 165 transitions. [2020-11-29 22:11:51,905 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 165 transitions. Word has length 19 [2020-11-29 22:11:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:51,905 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 165 transitions. [2020-11-29 22:11:51,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:11:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 165 transitions. [2020-11-29 22:11:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:11:51,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:51,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:51,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 22:11:51,907 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:51,907 INFO L82 PathProgramCache]: Analyzing trace with hash 719067562, now seen corresponding path program 1 times [2020-11-29 22:11:51,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:51,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241945436] [2020-11-29 22:11:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:52,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241945436] [2020-11-29 22:11:52,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:52,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:11:52,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659141062] [2020-11-29 22:11:52,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:11:52,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:52,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:11:52,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:52,054 INFO L87 Difference]: Start difference. First operand 149 states and 165 transitions. Second operand 6 states. [2020-11-29 22:11:52,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:52,582 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2020-11-29 22:11:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:11:52,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-29 22:11:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:52,585 INFO L225 Difference]: With dead ends: 191 [2020-11-29 22:11:52,585 INFO L226 Difference]: Without dead ends: 191 [2020-11-29 22:11:52,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:11:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-29 22:11:52,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 148. [2020-11-29 22:11:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-11-29 22:11:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2020-11-29 22:11:52,592 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 21 [2020-11-29 22:11:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:52,593 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2020-11-29 22:11:52,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:11:52,593 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2020-11-29 22:11:52,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:11:52,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:52,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:52,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 22:11:52,594 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:52,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2072080786, now seen corresponding path program 1 times [2020-11-29 22:11:52,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:52,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30719094] [2020-11-29 22:11:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:52,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:52,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30719094] [2020-11-29 22:11:52,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:52,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 22:11:52,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754728743] [2020-11-29 22:11:52,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:11:52,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:52,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:11:52,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:11:52,821 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 7 states. [2020-11-29 22:11:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:53,367 INFO L93 Difference]: Finished difference Result 200 states and 219 transitions. [2020-11-29 22:11:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:11:53,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-29 22:11:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:53,370 INFO L225 Difference]: With dead ends: 200 [2020-11-29 22:11:53,370 INFO L226 Difference]: Without dead ends: 200 [2020-11-29 22:11:53,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:11:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-29 22:11:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 153. [2020-11-29 22:11:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-11-29 22:11:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2020-11-29 22:11:53,375 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 24 [2020-11-29 22:11:53,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:53,376 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2020-11-29 22:11:53,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:11:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2020-11-29 22:11:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:11:53,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:53,377 INFO L422 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] [2020-11-29 22:11:53,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 22:11:53,377 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:53,385 INFO L82 PathProgramCache]: Analyzing trace with hash -222321507, now seen corresponding path program 1 times [2020-11-29 22:11:53,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:53,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43270597] [2020-11-29 22:11:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:53,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:53,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43270597] [2020-11-29 22:11:53,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:53,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 22:11:53,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750512119] [2020-11-29 22:11:53,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:11:53,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:53,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:11:53,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:11:53,583 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand 10 states. [2020-11-29 22:11:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:54,379 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-11-29 22:11:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:11:54,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-11-29 22:11:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:54,381 INFO L225 Difference]: With dead ends: 152 [2020-11-29 22:11:54,381 INFO L226 Difference]: Without dead ends: 152 [2020-11-29 22:11:54,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:11:54,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-29 22:11:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-11-29 22:11:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-29 22:11:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2020-11-29 22:11:54,388 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 23 [2020-11-29 22:11:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:54,397 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2020-11-29 22:11:54,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:11:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2020-11-29 22:11:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:11:54,402 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:54,402 INFO L422 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] [2020-11-29 22:11:54,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 22:11:54,403 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:54,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:54,403 INFO L82 PathProgramCache]: Analyzing trace with hash -222321506, now seen corresponding path program 1 times [2020-11-29 22:11:54,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:54,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143995175] [2020-11-29 22:11:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:54,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:54,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143995175] [2020-11-29 22:11:54,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:54,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 22:11:54,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37716337] [2020-11-29 22:11:54,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:11:54,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:54,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:11:54,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:11:54,591 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand 11 states. [2020-11-29 22:11:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:55,696 INFO L93 Difference]: Finished difference Result 166 states and 183 transitions. [2020-11-29 22:11:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 22:11:55,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-11-29 22:11:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:55,698 INFO L225 Difference]: With dead ends: 166 [2020-11-29 22:11:55,698 INFO L226 Difference]: Without dead ends: 166 [2020-11-29 22:11:55,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-11-29 22:11:55,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-29 22:11:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 156. [2020-11-29 22:11:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 22:11:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2020-11-29 22:11:55,704 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 23 [2020-11-29 22:11:55,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:55,704 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2020-11-29 22:11:55,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:11:55,704 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2020-11-29 22:11:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:11:55,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:55,705 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:55,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 22:11:55,706 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1988184137, now seen corresponding path program 1 times [2020-11-29 22:11:55,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:55,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53660780] [2020-11-29 22:11:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:55,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53660780] [2020-11-29 22:11:55,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458051042] [2020-11-29 22:11:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:11:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:56,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 22:11:56,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:11:56,159 INFO L384 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 11 treesize of output 7 [2020-11-29 22:11:56,160 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,306 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 22:11:56,307 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,315 INFO L384 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 11 treesize of output 7 [2020-11-29 22:11:56,316 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,323 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,324 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,324 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-11-29 22:11:56,350 INFO L384 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 0 case distinctions, treesize of input 26 treesize of output 21 [2020-11-29 22:11:56,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,366 INFO L384 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 16 treesize of output 20 [2020-11-29 22:11:56,367 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,373 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,385 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,391 INFO L384 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 0 case distinctions, treesize of input 26 treesize of output 21 [2020-11-29 22:11:56,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,404 INFO L384 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 16 treesize of output 20 [2020-11-29 22:11:56,404 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,411 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,447 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,448 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,448 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:51, output treesize:33 [2020-11-29 22:11:56,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,495 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2020-11-29 22:11:56,496 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,521 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2020-11-29 22:11:56,522 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,538 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,539 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,539 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:33 [2020-11-29 22:11:56,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:11:56,587 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 10 [2020-11-29 22:11:56,593 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,606 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,621 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-11-29 22:11:56,621 INFO L384 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 24 treesize of output 10 [2020-11-29 22:11:56,623 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,628 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:11:56,628 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:11:56,629 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-11-29 22:11:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:56,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:11:56,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-29 22:11:56,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127477862] [2020-11-29 22:11:56,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:11:56,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:56,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:11:56,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:11:56,658 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand 9 states. [2020-11-29 22:11:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:57,282 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2020-11-29 22:11:57,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:11:57,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-11-29 22:11:57,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:57,284 INFO L225 Difference]: With dead ends: 205 [2020-11-29 22:11:57,284 INFO L226 Difference]: Without dead ends: 205 [2020-11-29 22:11:57,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:11:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-11-29 22:11:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 163. [2020-11-29 22:11:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 22:11:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2020-11-29 22:11:57,296 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 29 [2020-11-29 22:11:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:57,299 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2020-11-29 22:11:57,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:11:57,299 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2020-11-29 22:11:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:11:57,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:57,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:57,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 22:11:57,504 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1109240489, now seen corresponding path program 1 times [2020-11-29 22:11:57,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:57,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945129287] [2020-11-29 22:11:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:57,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:57,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945129287] [2020-11-29 22:11:57,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:57,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:11:57,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28682451] [2020-11-29 22:11:57,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:11:57,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:57,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:11:57,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:57,664 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand 6 states. [2020-11-29 22:11:58,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:58,084 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2020-11-29 22:11:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:11:58,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-29 22:11:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:58,086 INFO L225 Difference]: With dead ends: 166 [2020-11-29 22:11:58,086 INFO L226 Difference]: Without dead ends: 166 [2020-11-29 22:11:58,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:11:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-29 22:11:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-11-29 22:11:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-29 22:11:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2020-11-29 22:11:58,092 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 31 [2020-11-29 22:11:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:58,092 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2020-11-29 22:11:58,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:11:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2020-11-29 22:11:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 22:11:58,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:58,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:58,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 22:11:58,098 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:58,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2107320774, now seen corresponding path program 1 times [2020-11-29 22:11:58,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:58,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589423138] [2020-11-29 22:11:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:58,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589423138] [2020-11-29 22:11:58,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:58,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:11:58,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451488327] [2020-11-29 22:11:58,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:11:58,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:58,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:11:58,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:58,273 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand 6 states. [2020-11-29 22:11:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:58,870 INFO L93 Difference]: Finished difference Result 259 states and 287 transitions. [2020-11-29 22:11:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:11:58,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-29 22:11:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:58,872 INFO L225 Difference]: With dead ends: 259 [2020-11-29 22:11:58,872 INFO L226 Difference]: Without dead ends: 259 [2020-11-29 22:11:58,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:11:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-11-29 22:11:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 161. [2020-11-29 22:11:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-29 22:11:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2020-11-29 22:11:58,891 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 30 [2020-11-29 22:11:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:58,892 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2020-11-29 22:11:58,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:11:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2020-11-29 22:11:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 22:11:58,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:58,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:58,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 22:11:58,893 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:58,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2107320773, now seen corresponding path program 1 times [2020-11-29 22:11:58,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:58,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313624584] [2020-11-29 22:11:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:59,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313624584] [2020-11-29 22:11:59,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:59,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:11:59,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617826482] [2020-11-29 22:11:59,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:11:59,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:59,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:11:59,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:59,008 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand 6 states. [2020-11-29 22:11:59,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:59,474 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2020-11-29 22:11:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:11:59,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-29 22:11:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:59,479 INFO L225 Difference]: With dead ends: 231 [2020-11-29 22:11:59,479 INFO L226 Difference]: Without dead ends: 231 [2020-11-29 22:11:59,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:11:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-11-29 22:11:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2020-11-29 22:11:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-29 22:11:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2020-11-29 22:11:59,485 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 30 [2020-11-29 22:11:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:59,485 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2020-11-29 22:11:59,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:11:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2020-11-29 22:11:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:11:59,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:59,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:59,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 22:11:59,486 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:59,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:59,486 INFO L82 PathProgramCache]: Analyzing trace with hash 639963670, now seen corresponding path program 1 times [2020-11-29 22:11:59,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:59,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605225835] [2020-11-29 22:11:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:59,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605225835] [2020-11-29 22:11:59,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:59,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:11:59,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585666862] [2020-11-29 22:11:59,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:11:59,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:11:59,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:11:59,585 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand 5 states. [2020-11-29 22:11:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:59,848 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2020-11-29 22:11:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:11:59,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-29 22:11:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:11:59,849 INFO L225 Difference]: With dead ends: 162 [2020-11-29 22:11:59,850 INFO L226 Difference]: Without dead ends: 162 [2020-11-29 22:11:59,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:11:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-29 22:11:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2020-11-29 22:11:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-29 22:11:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 173 transitions. [2020-11-29 22:11:59,854 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 173 transitions. Word has length 31 [2020-11-29 22:11:59,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:11:59,854 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 173 transitions. [2020-11-29 22:11:59,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:11:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 173 transitions. [2020-11-29 22:11:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:11:59,855 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:11:59,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:11:59,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 22:11:59,856 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:11:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:59,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1851483541, now seen corresponding path program 1 times [2020-11-29 22:11:59,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:59,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137102193] [2020-11-29 22:11:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:59,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:11:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:11:59,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137102193] [2020-11-29 22:11:59,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:59,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:11:59,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905433940] [2020-11-29 22:11:59,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:11:59,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:59,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:11:59,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:11:59,963 INFO L87 Difference]: Start difference. First operand 159 states and 173 transitions. Second operand 5 states. [2020-11-29 22:12:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:00,207 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-11-29 22:12:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:12:00,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-11-29 22:12:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:00,208 INFO L225 Difference]: With dead ends: 159 [2020-11-29 22:12:00,208 INFO L226 Difference]: Without dead ends: 159 [2020-11-29 22:12:00,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:12:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-29 22:12:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-11-29 22:12:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-29 22:12:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2020-11-29 22:12:00,213 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 34 [2020-11-29 22:12:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:00,213 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2020-11-29 22:12:00,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:12:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2020-11-29 22:12:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:12:00,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:00,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:00,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 22:12:00,214 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:00,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2066827193, now seen corresponding path program 1 times [2020-11-29 22:12:00,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:00,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745163808] [2020-11-29 22:12:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:00,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:12:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:00,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745163808] [2020-11-29 22:12:00,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:00,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 22:12:00,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142348732] [2020-11-29 22:12:00,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:12:00,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:00,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:12:00,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:12:00,353 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand 9 states. [2020-11-29 22:12:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:00,995 INFO L93 Difference]: Finished difference Result 158 states and 170 transitions. [2020-11-29 22:12:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:12:00,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-11-29 22:12:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:00,997 INFO L225 Difference]: With dead ends: 158 [2020-11-29 22:12:00,997 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 22:12:00,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:12:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 22:12:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-11-29 22:12:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-29 22:12:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2020-11-29 22:12:01,001 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 34 [2020-11-29 22:12:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:01,002 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2020-11-29 22:12:01,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:12:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2020-11-29 22:12:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:12:01,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:01,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:01,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 22:12:01,003 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:01,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:01,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2066827192, now seen corresponding path program 1 times [2020-11-29 22:12:01,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:01,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419610357] [2020-11-29 22:12:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:12:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:01,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419610357] [2020-11-29 22:12:01,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:01,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 22:12:01,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424181634] [2020-11-29 22:12:01,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:12:01,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:01,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:12:01,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:12:01,222 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand 10 states. [2020-11-29 22:12:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:01,877 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-11-29 22:12:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:12:01,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-11-29 22:12:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:01,879 INFO L225 Difference]: With dead ends: 154 [2020-11-29 22:12:01,879 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 22:12:01,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:12:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 22:12:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-11-29 22:12:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-29 22:12:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2020-11-29 22:12:01,883 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 34 [2020-11-29 22:12:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:01,883 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2020-11-29 22:12:01,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:12:01,883 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2020-11-29 22:12:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 22:12:01,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:01,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:01,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 22:12:01,884 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:01,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:01,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1739691464, now seen corresponding path program 1 times [2020-11-29 22:12:01,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:01,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057646757] [2020-11-29 22:12:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:01,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:12:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:12:01,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057646757] [2020-11-29 22:12:01,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:01,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:01,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432098624] [2020-11-29 22:12:01,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:12:01,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:01,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:12:01,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:12:01,988 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand 4 states. [2020-11-29 22:12:02,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:02,243 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-11-29 22:12:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:12:02,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 22:12:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:02,245 INFO L225 Difference]: With dead ends: 137 [2020-11-29 22:12:02,245 INFO L226 Difference]: Without dead ends: 137 [2020-11-29 22:12:02,245 INFO L677 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 [2020-11-29 22:12:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-29 22:12:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-11-29 22:12:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-29 22:12:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2020-11-29 22:12:02,249 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 35 [2020-11-29 22:12:02,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:02,249 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2020-11-29 22:12:02,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:12:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2020-11-29 22:12:02,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:12:02,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:02,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:02,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 22:12:02,250 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1104380138, now seen corresponding path program 1 times [2020-11-29 22:12:02,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:02,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124472629] [2020-11-29 22:12:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:12:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:02,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124472629] [2020-11-29 22:12:02,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:02,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-29 22:12:02,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765980456] [2020-11-29 22:12:02,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:12:02,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:02,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:12:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:12:02,477 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand 13 states. [2020-11-29 22:12:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:03,058 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-11-29 22:12:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 22:12:03,060 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-11-29 22:12:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:03,061 INFO L225 Difference]: With dead ends: 160 [2020-11-29 22:12:03,061 INFO L226 Difference]: Without dead ends: 160 [2020-11-29 22:12:03,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2020-11-29 22:12:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-29 22:12:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2020-11-29 22:12:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-29 22:12:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-11-29 22:12:03,064 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 36 [2020-11-29 22:12:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:03,064 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-11-29 22:12:03,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:12:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-11-29 22:12:03,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 22:12:03,065 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:03,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:03,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 22:12:03,065 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:03,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:03,066 INFO L82 PathProgramCache]: Analyzing trace with hash 197711365, now seen corresponding path program 1 times [2020-11-29 22:12:03,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:03,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803208266] [2020-11-29 22:12:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:03,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:12:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:03,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803208266] [2020-11-29 22:12:03,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505721207] [2020-11-29 22:12:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:12:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:03,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:12:03,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:03,373 INFO L384 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 [2020-11-29 22:12:03,373 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:03,375 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:03,376 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:03,376 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 22:12:03,394 INFO L384 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 19 treesize of output 7 [2020-11-29 22:12:03,395 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:03,420 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:03,420 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:03,420 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 22:12:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:12:03,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:12:03,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2020-11-29 22:12:03,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409579228] [2020-11-29 22:12:03,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:12:03,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:03,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:12:03,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:12:03,446 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 4 states. [2020-11-29 22:12:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:03,552 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2020-11-29 22:12:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:12:03,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-11-29 22:12:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:03,553 INFO L225 Difference]: With dead ends: 153 [2020-11-29 22:12:03,553 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 22:12:03,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:12:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 22:12:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2020-11-29 22:12:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-29 22:12:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2020-11-29 22:12:03,557 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 37 [2020-11-29 22:12:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:03,557 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2020-11-29 22:12:03,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:12:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2020-11-29 22:12:03,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 22:12:03,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:03,558 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:03,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 22:12:03,758 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:03,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:03,759 INFO L82 PathProgramCache]: Analyzing trace with hash 222286264, now seen corresponding path program 1 times [2020-11-29 22:12:03,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:03,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345494332] [2020-11-29 22:12:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:12:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:12:03,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345494332] [2020-11-29 22:12:03,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22030341] [2020-11-29 22:12:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:12:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:04,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 22:12:04,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:04,072 INFO L384 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 11 treesize of output 7 [2020-11-29 22:12:04,072 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,082 INFO L384 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 11 treesize of output 7 [2020-11-29 22:12:04,082 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,088 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,088 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,089 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-11-29 22:12:04,102 INFO L384 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 0 case distinctions, treesize of input 26 treesize of output 21 [2020-11-29 22:12:04,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,114 INFO L384 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 16 treesize of output 20 [2020-11-29 22:12:04,115 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,121 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,121 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,134 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,139 INFO L384 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 0 case distinctions, treesize of input 26 treesize of output 21 [2020-11-29 22:12:04,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,151 INFO L384 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 16 treesize of output 20 [2020-11-29 22:12:04,152 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,162 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,162 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,173 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,173 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,173 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:51, output treesize:33 [2020-11-29 22:12:04,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,217 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2020-11-29 22:12:04,218 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,237 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,246 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2020-11-29 22:12:04,247 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,261 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,261 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:33 [2020-11-29 22:12:04,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:04,285 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 10 [2020-11-29 22:12:04,287 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,297 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,303 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-11-29 22:12:04,304 INFO L384 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 24 treesize of output 10 [2020-11-29 22:12:04,305 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,311 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:04,311 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:04,311 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-11-29 22:12:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:12:04,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:12:04,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-29 22:12:04,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211423130] [2020-11-29 22:12:04,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:12:04,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:04,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:12:04,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:12:04,332 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 8 states. [2020-11-29 22:12:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:04,723 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2020-11-29 22:12:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:12:04,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-11-29 22:12:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:04,724 INFO L225 Difference]: With dead ends: 157 [2020-11-29 22:12:04,724 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 22:12:04,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:12:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 22:12:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2020-11-29 22:12:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-11-29 22:12:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2020-11-29 22:12:04,729 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 38 [2020-11-29 22:12:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:04,729 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2020-11-29 22:12:04,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:12:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2020-11-29 22:12:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 22:12:04,730 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:04,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:04,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 22:12:04,942 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1699060749, now seen corresponding path program 1 times [2020-11-29 22:12:04,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:04,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846169051] [2020-11-29 22:12:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:04,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:04,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:05,011 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:12:05,011 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:12:05,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 22:12:05,046 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-29 22:12:05,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:12:05 BoogieIcfgContainer [2020-11-29 22:12:05,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:12:05,087 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:12:05,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:12:05,087 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:12:05,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:11:46" (3/4) ... [2020-11-29 22:12:05,097 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:12:05,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:12:05,098 INFO L168 Benchmark]: Toolchain (without parser) took 19890.99 ms. Allocated memory was 100.7 MB in the beginning and 255.9 MB in the end (delta: 155.2 MB). Free memory was 72.8 MB in the beginning and 155.3 MB in the end (delta: -82.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:05,098 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 100.7 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:12:05,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.65 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 64.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:05,099 INFO L168 Benchmark]: Boogie Preprocessor took 64.64 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 61.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:05,100 INFO L168 Benchmark]: RCFGBuilder took 1011.46 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 60.9 MB in the beginning and 82.2 MB in the end (delta: -21.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:05,100 INFO L168 Benchmark]: TraceAbstraction took 18335.40 ms. Allocated memory was 121.6 MB in the beginning and 255.9 MB in the end (delta: 134.2 MB). Free memory was 82.2 MB in the beginning and 155.3 MB in the end (delta: -73.1 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:05,100 INFO L168 Benchmark]: Witness Printer took 10.28 ms. Allocated memory is still 255.9 MB. Free memory is still 155.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:12:05,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 100.7 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.65 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 64.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.64 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 61.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1011.46 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 60.9 MB in the beginning and 82.2 MB in the end (delta: -21.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18335.40 ms. Allocated memory was 121.6 MB in the beginning and 255.9 MB in the end (delta: 134.2 MB). Free memory was 82.2 MB in the beginning and 155.3 MB in the end (delta: -73.1 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. * Witness Printer took 10.28 ms. Allocated memory is still 255.9 MB. Free memory is still 155.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L999] null->next = ((void*)0) VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1000] null->prev = ((void*)0) VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1001] null->colour = BLACK VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); VAL [list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1004] list->next = null VAL [list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1005] list->prev = null VAL [list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1006] list->colour = BLACK VAL [list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1008] struct TSLL* end = list; VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1042] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1045] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end={1:0}, end->next={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1056] COND TRUE null != list VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1058] EXPR list->colour VAL [end={-1:0}, list={1:0}, list->colour=1, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={-1:0}, list={1:0}, list->next={-1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1067] end = list->next [L1068] free(list) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1068] free(list) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1068] free(list) [L1069] list = end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1056] COND FALSE !(null != list) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1073] return 0; VAL [\result=0, end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={1:0}, malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 174 locations, 71 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.2s, OverallIterations: 25, TraceHistogramMax: 2, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2491 SDtfs, 2916 SDslu, 4217 SDs, 0 SdLazy, 9138 SolverSat, 440 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 579 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 741 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 675 ConstructedInterpolants, 0 QuantifiedInterpolants, 142262 SizeOfPredicates, 23 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 27 InterpolantComputations, 22 PerfectInterpolantSequences, 8/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:12:07,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:12:07,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:12:07,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:12:07,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:12:07,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:12:07,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:12:07,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:12:07,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:12:07,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:12:07,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:12:07,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:12:07,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:12:07,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:12:07,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:12:07,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:12:07,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:12:07,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:12:07,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:12:07,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:12:07,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:12:07,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:12:07,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:12:07,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:12:07,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:12:07,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:12:07,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:12:07,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:12:07,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:12:07,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:12:07,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:12:07,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:12:07,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:12:07,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:12:07,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:12:07,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:12:07,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:12:07,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:12:07,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:12:07,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:12:07,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:12:07,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-29 22:12:07,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:12:07,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:12:07,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:12:07,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:12:07,828 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:12:07,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:12:07,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:12:07,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:12:07,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:12:07,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:12:07,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:12:07,831 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 22:12:07,831 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 22:12:07,831 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 22:12:07,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:12:07,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 22:12:07,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 22:12:07,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 22:12:07,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:12:07,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:12:07,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:12:07,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:12:07,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:12:07,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:12:07,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:12:07,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:12:07,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:12:07,835 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 22:12:07,835 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 22:12:07,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:12:07,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 22:12:07,835 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aa86be9eb0317030839433587db2b1c5b5e93d6 [2020-11-29 22:12:08,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:12:08,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:12:08,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:12:08,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:12:08,280 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:12:08,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-11-29 22:12:08,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data/062df3f22/944101d8b65d449ebecb9a8b6b0c24ac/FLAGdca5a08a4 [2020-11-29 22:12:08,909 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:12:08,913 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-11-29 22:12:08,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data/062df3f22/944101d8b65d449ebecb9a8b6b0c24ac/FLAGdca5a08a4 [2020-11-29 22:12:09,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/data/062df3f22/944101d8b65d449ebecb9a8b6b0c24ac [2020-11-29 22:12:09,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:12:09,174 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 22:12:09,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:12:09,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:12:09,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:12:09,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552f7464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09, skipping insertion in model container [2020-11-29 22:12:09,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:12:09,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:12:09,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:12:09,620 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:12:09,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:12:09,730 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:12:09,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09 WrapperNode [2020-11-29 22:12:09,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:12:09,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:12:09,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:12:09,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:12:09,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (1/1) ... [2020-11-29 22:12:09,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:12:09,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:12:09,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:12:09,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:12:09,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:12:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 22:12:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:12:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 22:12:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 22:12:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 22:12:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 22:12:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 22:12:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 22:12:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 22:12:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 22:12:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 22:12:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 22:12:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 22:12:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 22:12:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 22:12:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 22:12:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 22:12:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 22:12:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 22:12:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 22:12:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 22:12:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 22:12:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 22:12:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 22:12:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 22:12:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 22:12:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 22:12:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 22:12:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 22:12:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 22:12:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 22:12:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 22:12:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 22:12:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 22:12:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 22:12:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 22:12:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 22:12:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 22:12:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 22:12:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 22:12:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 22:12:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 22:12:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 22:12:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 22:12:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 22:12:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 22:12:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 22:12:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 22:12:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 22:12:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 22:12:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 22:12:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 22:12:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 22:12:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 22:12:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 22:12:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 22:12:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 22:12:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 22:12:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 22:12:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-29 22:12:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 22:12:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 22:12:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 22:12:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 22:12:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 22:12:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 22:12:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 22:12:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 22:12:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 22:12:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 22:12:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 22:12:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 22:12:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 22:12:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 22:12:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 22:12:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 22:12:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 22:12:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 22:12:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 22:12:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 22:12:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 22:12:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 22:12:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 22:12:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 22:12:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 22:12:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 22:12:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 22:12:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 22:12:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 22:12:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 22:12:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 22:12:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 22:12:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 22:12:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 22:12:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 22:12:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 22:12:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 22:12:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 22:12:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 22:12:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 22:12:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 22:12:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 22:12:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 22:12:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 22:12:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 22:12:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 22:12:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 22:12:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 22:12:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 22:12:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 22:12:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 22:12:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 22:12:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 22:12:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:12:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 22:12:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 22:12:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 22:12:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 22:12:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 22:12:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 22:12:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:12:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 22:12:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 22:12:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:12:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 22:12:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-29 22:12:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-29 22:12:11,195 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:12:11,196 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 22:12:11,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:11 BoogieIcfgContainer [2020-11-29 22:12:11,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:12:11,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:12:11,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:12:11,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:12:11,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:12:09" (1/3) ... [2020-11-29 22:12:11,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea68528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:12:11, skipping insertion in model container [2020-11-29 22:12:11,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:09" (2/3) ... [2020-11-29 22:12:11,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea68528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:12:11, skipping insertion in model container [2020-11-29 22:12:11,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:11" (3/3) ... [2020-11-29 22:12:11,213 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-11-29 22:12:11,231 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:12:11,240 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2020-11-29 22:12:11,249 INFO L253 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2020-11-29 22:12:11,268 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:12:11,268 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 22:12:11,268 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:12:11,268 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:12:11,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:12:11,269 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:12:11,269 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:12:11,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:12:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-11-29 22:12:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:12:11,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:11,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:11,296 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2010730465, now seen corresponding path program 1 times [2020-11-29 22:12:11,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:11,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86137746] [2020-11-29 22:12:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:11,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:12:11,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:11,572 INFO L384 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 [2020-11-29 22:12:11,572 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:11,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:11,580 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:11,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:12:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:11,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:11,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86137746] [2020-11-29 22:12:11,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:11,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 22:12:11,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99597442] [2020-11-29 22:12:11,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:11,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:11,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:11,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:11,641 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-11-29 22:12:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:12,106 INFO L93 Difference]: Finished difference Result 189 states and 202 transitions. [2020-11-29 22:12:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:12,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-29 22:12:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:12,127 INFO L225 Difference]: With dead ends: 189 [2020-11-29 22:12:12,127 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 22:12:12,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:12,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 22:12:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 157. [2020-11-29 22:12:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-29 22:12:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2020-11-29 22:12:12,205 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 7 [2020-11-29 22:12:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:12,205 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2020-11-29 22:12:12,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2020-11-29 22:12:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:12:12,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:12,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:12,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 22:12:12,426 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:12,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2010730464, now seen corresponding path program 1 times [2020-11-29 22:12:12,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:12,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630833748] [2020-11-29 22:12:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:12,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:12:12,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:12,596 INFO L384 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 [2020-11-29 22:12:12,596 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:12,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:12,630 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:12,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 22:12:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:12,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:12,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630833748] [2020-11-29 22:12:12,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:12,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-29 22:12:12,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836359520] [2020-11-29 22:12:12,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:12:12,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:12:12,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:12:12,726 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand 4 states. [2020-11-29 22:12:13,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:13,215 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2020-11-29 22:12:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:13,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 22:12:13,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:13,218 INFO L225 Difference]: With dead ends: 154 [2020-11-29 22:12:13,218 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 22:12:13,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:12:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 22:12:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-29 22:12:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-29 22:12:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2020-11-29 22:12:13,235 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 7 [2020-11-29 22:12:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:13,236 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2020-11-29 22:12:13,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:12:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2020-11-29 22:12:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:12:13,236 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:13,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:13,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 22:12:13,459 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:13,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1224286621, now seen corresponding path program 1 times [2020-11-29 22:12:13,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:13,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678196579] [2020-11-29 22:12:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:13,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:12:13,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:13,681 INFO L384 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 [2020-11-29 22:12:13,682 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:13,684 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:13,685 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:13,685 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:12:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:13,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:13,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678196579] [2020-11-29 22:12:13,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:13,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 22:12:13,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79552225] [2020-11-29 22:12:13,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:13,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:13,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:13,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:13,713 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand 3 states. [2020-11-29 22:12:14,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:14,113 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2020-11-29 22:12:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:14,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 22:12:14,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:14,115 INFO L225 Difference]: With dead ends: 153 [2020-11-29 22:12:14,115 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 22:12:14,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 22:12:14,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2020-11-29 22:12:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-29 22:12:14,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2020-11-29 22:12:14,125 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 11 [2020-11-29 22:12:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:14,126 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2020-11-29 22:12:14,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:14,126 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2020-11-29 22:12:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:12:14,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:14,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:14,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 22:12:14,340 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:14,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:14,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1224286620, now seen corresponding path program 1 times [2020-11-29 22:12:14,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:14,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788704278] [2020-11-29 22:12:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:14,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:12:14,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:14,537 INFO L384 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 [2020-11-29 22:12:14,537 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:14,544 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:14,545 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:14,545 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 22:12:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:14,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:14,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788704278] [2020-11-29 22:12:14,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:14,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-29 22:12:14,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911352902] [2020-11-29 22:12:14,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:12:14,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:14,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:12:14,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:12:14,614 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 4 states. [2020-11-29 22:12:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:15,170 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2020-11-29 22:12:15,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:12:15,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 22:12:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:15,172 INFO L225 Difference]: With dead ends: 166 [2020-11-29 22:12:15,173 INFO L226 Difference]: Without dead ends: 166 [2020-11-29 22:12:15,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:12:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-29 22:12:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2020-11-29 22:12:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-11-29 22:12:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2020-11-29 22:12:15,184 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 11 [2020-11-29 22:12:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:15,184 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2020-11-29 22:12:15,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:12:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2020-11-29 22:12:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 22:12:15,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:15,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:15,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 22:12:15,418 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash 981248210, now seen corresponding path program 1 times [2020-11-29 22:12:15,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:15,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512601162] [2020-11-29 22:12:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:15,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:12:15,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:15,632 INFO L384 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 [2020-11-29 22:12:15,633 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:15,635 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:15,636 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:15,636 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:12:15,695 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:15,696 INFO L384 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 14 treesize of output 30 [2020-11-29 22:12:15,697 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:15,722 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-11-29 22:12:15,723 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:12:15,724 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-11-29 22:12:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:15,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:15,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512601162] [2020-11-29 22:12:15,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:15,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 22:12:15,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915542528] [2020-11-29 22:12:15,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:12:15,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:15,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:12:15,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:12:15,770 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand 4 states. [2020-11-29 22:12:16,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:16,350 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2020-11-29 22:12:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:12:16,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 22:12:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:16,352 INFO L225 Difference]: With dead ends: 154 [2020-11-29 22:12:16,352 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 22:12:16,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:12:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 22:12:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2020-11-29 22:12:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-29 22:12:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2020-11-29 22:12:16,363 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 16 [2020-11-29 22:12:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:16,363 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2020-11-29 22:12:16,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:12:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2020-11-29 22:12:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 22:12:16,364 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:16,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:16,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 22:12:16,574 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash 981248211, now seen corresponding path program 1 times [2020-11-29 22:12:16,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:16,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808892489] [2020-11-29 22:12:16,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:16,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:12:16,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:16,792 INFO L384 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 [2020-11-29 22:12:16,792 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:16,799 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:16,799 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:16,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 22:12:16,857 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:16,858 INFO L384 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 28 [2020-11-29 22:12:16,859 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:16,888 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 22:12:16,889 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:12:16,890 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-11-29 22:12:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:16,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:17,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808892489] [2020-11-29 22:12:17,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:17,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-11-29 22:12:17,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613997052] [2020-11-29 22:12:17,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:12:17,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:17,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:12:17,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:12:17,156 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand 7 states. [2020-11-29 22:12:18,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:18,337 INFO L93 Difference]: Finished difference Result 186 states and 203 transitions. [2020-11-29 22:12:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:12:18,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-29 22:12:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:18,339 INFO L225 Difference]: With dead ends: 186 [2020-11-29 22:12:18,339 INFO L226 Difference]: Without dead ends: 186 [2020-11-29 22:12:18,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:12:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-29 22:12:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 139. [2020-11-29 22:12:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-29 22:12:18,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2020-11-29 22:12:18,345 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 16 [2020-11-29 22:12:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:18,345 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2020-11-29 22:12:18,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:12:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2020-11-29 22:12:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:12:18,346 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:18,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:18,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 22:12:18,560 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:18,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1913274155, now seen corresponding path program 1 times [2020-11-29 22:12:18,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:18,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800414128] [2020-11-29 22:12:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:18,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:12:18,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:18,732 INFO L384 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 [2020-11-29 22:12:18,732 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:18,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:18,734 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:18,734 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:12:18,764 INFO L384 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 11 treesize of output 7 [2020-11-29 22:12:18,764 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:18,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:18,774 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:18,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-29 22:12:18,797 INFO L384 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 19 treesize of output 11 [2020-11-29 22:12:18,797 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:18,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:18,800 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:18,800 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-11-29 22:12:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:18,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:18,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800414128] [2020-11-29 22:12:18,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:18,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 22:12:18,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526823263] [2020-11-29 22:12:18,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:12:18,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:18,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:12:18,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:12:18,831 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand 5 states. [2020-11-29 22:12:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:19,505 INFO L93 Difference]: Finished difference Result 189 states and 214 transitions. [2020-11-29 22:12:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:12:19,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 22:12:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:19,507 INFO L225 Difference]: With dead ends: 189 [2020-11-29 22:12:19,507 INFO L226 Difference]: Without dead ends: 189 [2020-11-29 22:12:19,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:12:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-11-29 22:12:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 138. [2020-11-29 22:12:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-29 22:12:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2020-11-29 22:12:19,513 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 18 [2020-11-29 22:12:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:19,518 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2020-11-29 22:12:19,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:12:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2020-11-29 22:12:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:12:19,519 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:19,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:19,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 22:12:19,720 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:19,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:19,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1913274154, now seen corresponding path program 1 times [2020-11-29 22:12:19,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:19,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500449422] [2020-11-29 22:12:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:19,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:12:19,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:19,884 INFO L384 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 [2020-11-29 22:12:19,885 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:19,889 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:19,890 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:19,890 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 22:12:19,915 INFO L384 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 11 treesize of output 7 [2020-11-29 22:12:19,915 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:19,926 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:19,930 INFO L384 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 11 treesize of output 7 [2020-11-29 22:12:19,930 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:19,940 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:19,941 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:19,941 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-11-29 22:12:19,981 INFO L384 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 [2020-11-29 22:12:19,981 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:19,990 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:19,992 INFO L384 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 19 treesize of output 11 [2020-11-29 22:12:19,993 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:19,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:19,999 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:19,999 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-11-29 22:12:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:20,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:20,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500449422] [2020-11-29 22:12:20,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:20,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 22:12:20,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684816363] [2020-11-29 22:12:20,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:12:20,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:20,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:12:20,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:12:20,177 INFO L87 Difference]: Start difference. First operand 138 states and 154 transitions. Second operand 8 states. [2020-11-29 22:12:21,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:21,794 INFO L93 Difference]: Finished difference Result 212 states and 239 transitions. [2020-11-29 22:12:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:12:21,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-11-29 22:12:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:21,797 INFO L225 Difference]: With dead ends: 212 [2020-11-29 22:12:21,797 INFO L226 Difference]: Without dead ends: 212 [2020-11-29 22:12:21,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:12:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-11-29 22:12:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 137. [2020-11-29 22:12:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-29 22:12:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 153 transitions. [2020-11-29 22:12:21,803 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 153 transitions. Word has length 18 [2020-11-29 22:12:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:21,803 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 153 transitions. [2020-11-29 22:12:21,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:12:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 153 transitions. [2020-11-29 22:12:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:12:21,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:21,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:22,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 22:12:22,005 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:22,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:22,005 INFO L82 PathProgramCache]: Analyzing trace with hash -362505277, now seen corresponding path program 1 times [2020-11-29 22:12:22,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:22,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858661232] [2020-11-29 22:12:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:22,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:12:22,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:22,195 INFO L384 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 [2020-11-29 22:12:22,195 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:22,198 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:22,198 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:22,198 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:12:22,223 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:22,223 INFO L384 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 13 treesize of output 17 [2020-11-29 22:12:22,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:12:22,231 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:22,234 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:22,234 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:22,235 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:4 [2020-11-29 22:12:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:22,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:22,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858661232] [2020-11-29 22:12:22,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:22,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 22:12:22,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513532863] [2020-11-29 22:12:22,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:12:22,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:22,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:12:22,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:12:22,283 INFO L87 Difference]: Start difference. First operand 137 states and 153 transitions. Second operand 5 states. [2020-11-29 22:12:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:22,876 INFO L93 Difference]: Finished difference Result 183 states and 197 transitions. [2020-11-29 22:12:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:12:22,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 22:12:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:22,879 INFO L225 Difference]: With dead ends: 183 [2020-11-29 22:12:22,879 INFO L226 Difference]: Without dead ends: 183 [2020-11-29 22:12:22,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:12:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-29 22:12:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 136. [2020-11-29 22:12:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 22:12:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2020-11-29 22:12:22,884 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 20 [2020-11-29 22:12:22,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:22,884 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2020-11-29 22:12:22,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:12:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2020-11-29 22:12:22,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:12:22,888 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:22,888 INFO L422 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] [2020-11-29 22:12:23,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-29 22:12:23,089 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:23,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:23,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1799374189, now seen corresponding path program 1 times [2020-11-29 22:12:23,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:23,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252656728] [2020-11-29 22:12:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:23,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:12:23,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:23,261 INFO L384 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 [2020-11-29 22:12:23,261 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:23,267 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:23,267 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:23,267 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-11-29 22:12:23,303 INFO L384 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 [2020-11-29 22:12:23,303 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:23,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:23,305 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:23,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-11-29 22:12:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:23,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:23,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252656728] [2020-11-29 22:12:23,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:23,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2020-11-29 22:12:23,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519783261] [2020-11-29 22:12:23,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:12:23,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:23,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:12:23,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:12:23,355 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand 8 states. [2020-11-29 22:12:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:24,246 INFO L93 Difference]: Finished difference Result 190 states and 209 transitions. [2020-11-29 22:12:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:12:24,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-29 22:12:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:24,248 INFO L225 Difference]: With dead ends: 190 [2020-11-29 22:12:24,248 INFO L226 Difference]: Without dead ends: 190 [2020-11-29 22:12:24,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:12:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-11-29 22:12:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2020-11-29 22:12:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 22:12:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2020-11-29 22:12:24,254 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 23 [2020-11-29 22:12:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:24,254 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2020-11-29 22:12:24,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:12:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2020-11-29 22:12:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:12:24,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:24,255 INFO L422 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] [2020-11-29 22:12:24,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-29 22:12:24,456 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:24,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash 685968663, now seen corresponding path program 1 times [2020-11-29 22:12:24,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:24,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683529373] [2020-11-29 22:12:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:24,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:12:24,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:24,695 INFO L384 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 [2020-11-29 22:12:24,696 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:24,698 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:24,698 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:24,698 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:12:24,746 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:24,747 INFO L384 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 19 treesize of output 41 [2020-11-29 22:12:24,748 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:12:24,749 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:12:24,760 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:24,784 INFO L625 ElimStorePlain]: treesize reduction 16, result has 51.5 percent of original size [2020-11-29 22:12:24,785 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:24,785 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:17 [2020-11-29 22:12:24,809 INFO L384 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 [2020-11-29 22:12:24,809 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:24,822 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:24,823 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:24,824 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:27 [2020-11-29 22:12:24,916 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:24,917 INFO L384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 59 [2020-11-29 22:12:24,924 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-11-29 22:12:24,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:12:24,925 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:24,946 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:24,947 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:12:24,947 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-11-29 22:12:25,008 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:25,008 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2020-11-29 22:12:25,009 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:25,016 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:25,018 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:12:25,018 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:19 [2020-11-29 22:12:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:25,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:26,854 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (= (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) (bvadd |main_#t~mem7.offset| (_ bv4 32)) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))) is different from false [2020-11-29 22:12:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:28,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683529373] [2020-11-29 22:12:28,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:28,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-11-29 22:12:28,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846596067] [2020-11-29 22:12:28,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:12:28,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:28,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:12:28,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=118, Unknown=1, NotChecked=22, Total=182 [2020-11-29 22:12:28,729 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand 14 states. [2020-11-29 22:12:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:30,755 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2020-11-29 22:12:30,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 22:12:30,756 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-11-29 22:12:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:30,757 INFO L225 Difference]: With dead ends: 208 [2020-11-29 22:12:30,757 INFO L226 Difference]: Without dead ends: 208 [2020-11-29 22:12:30,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=160, Invalid=349, Unknown=1, NotChecked=42, Total=552 [2020-11-29 22:12:30,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-29 22:12:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 140. [2020-11-29 22:12:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-29 22:12:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2020-11-29 22:12:30,764 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 22 [2020-11-29 22:12:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:30,764 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2020-11-29 22:12:30,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:12:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2020-11-29 22:12:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:12:30,768 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:30,768 INFO L422 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] [2020-11-29 22:12:30,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-29 22:12:30,983 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:12:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:30,984 INFO L82 PathProgramCache]: Analyzing trace with hash 685968664, now seen corresponding path program 1 times [2020-11-29 22:12:30,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:12:30,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575634214] [2020-11-29 22:12:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-29 22:12:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:31,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:12:31,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:12:31,233 INFO L384 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 [2020-11-29 22:12:31,234 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,245 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,245 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:12:31,263 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_127|], 1=[|v_#valid_144|]} [2020-11-29 22:12:31,272 INFO L384 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 [2020-11-29 22:12:31,272 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,285 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,296 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,296 INFO L384 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 13 treesize of output 17 [2020-11-29 22:12:31,297 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:12:31,299 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,306 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,306 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,306 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:13 [2020-11-29 22:12:31,339 INFO L384 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 [2020-11-29 22:12:31,339 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,352 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,356 INFO L384 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 [2020-11-29 22:12:31,356 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,367 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,367 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2020-11-29 22:12:31,443 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,444 INFO L384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 72 [2020-11-29 22:12:31,446 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-11-29 22:12:31,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:12:31,447 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:31,475 INFO L384 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 0 case distinctions, treesize of input 29 treesize of output 24 [2020-11-29 22:12:31,475 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,501 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:12:31,501 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:53 [2020-11-29 22:12:31,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:12:31,555 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 10 [2020-11-29 22:12:31,556 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,571 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,587 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,587 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2020-11-29 22:12:31,588 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,622 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:31,623 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:12:31,624 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:67, output treesize:11 [2020-11-29 22:12:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:31,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:12:36,833 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 22:12:44,309 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 34 [2020-11-29 22:12:44,342 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:44,578 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-11-29 22:12:44,578 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:44,586 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:45,280 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-11-29 22:12:45,280 INFO L625 ElimStorePlain]: treesize reduction 59, result has 54.3 percent of original size [2020-11-29 22:12:45,286 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 22:12:45,405 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-29 22:12:45,406 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:12:45,407 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-29 22:12:45,408 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:12:45,413 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:12:45,417 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 5 xjuncts. [2020-11-29 22:12:45,418 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:133, output treesize:53 [2020-11-29 22:12:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:45,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575634214] [2020-11-29 22:12:45,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:45,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-11-29 22:12:45,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656706652] [2020-11-29 22:12:45,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 22:12:45,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:12:45,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 22:12:45,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=194, Unknown=3, NotChecked=0, Total=240 [2020-11-29 22:12:45,603 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand 16 states. [2020-11-29 22:12:47,845 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-11-29 22:12:50,507 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-11-29 22:13:04,797 WARN L193 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-11-29 22:13:10,728 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-11-29 22:13:11,773 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-11-29 22:13:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:12,694 INFO L93 Difference]: Finished difference Result 168 states and 186 transitions. [2020-11-29 22:13:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 22:13:12,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-11-29 22:13:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:12,695 INFO L225 Difference]: With dead ends: 168 [2020-11-29 22:13:12,696 INFO L226 Difference]: Without dead ends: 168 [2020-11-29 22:13:12,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=345, Invalid=838, Unknown=7, NotChecked=0, Total=1190 [2020-11-29 22:13:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-29 22:13:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2020-11-29 22:13:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-29 22:13:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 148 transitions. [2020-11-29 22:13:12,705 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 148 transitions. Word has length 22 [2020-11-29 22:13:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:12,705 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 148 transitions. [2020-11-29 22:13:12,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 22:13:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 148 transitions. [2020-11-29 22:13:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:13:12,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:12,707 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:12,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-29 22:13:12,909 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:13:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:12,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1979589296, now seen corresponding path program 1 times [2020-11-29 22:13:12,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:13:12,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744491543] [2020-11-29 22:13:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-29 22:13:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:13,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 22:13:13,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:13:13,109 INFO L384 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 11 treesize of output 7 [2020-11-29 22:13:13,109 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,127 INFO L384 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 11 treesize of output 7 [2020-11-29 22:13:13,127 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,135 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,135 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,135 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-11-29 22:13:13,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,159 INFO L384 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 0 case distinctions, treesize of input 21 treesize of output 20 [2020-11-29 22:13:13,160 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,179 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,185 INFO L384 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 0 case distinctions, treesize of input 21 treesize of output 20 [2020-11-29 22:13:13,185 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,206 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,206 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-11-29 22:13:13,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,243 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2020-11-29 22:13:13,243 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,278 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 23 [2020-11-29 22:13:13,279 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,295 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,295 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:74, output treesize:36 [2020-11-29 22:13:13,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:13,373 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 10 [2020-11-29 22:13:13,375 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,403 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-11-29 22:13:13,403 INFO L384 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 24 treesize of output 10 [2020-11-29 22:13:13,411 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,425 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,425 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:10 [2020-11-29 22:13:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:13,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:13:13,537 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:13:13,554 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:13,565 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,591 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,595 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:13,598 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:13,604 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:13,605 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-11-29 22:13:13,605 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:97, output treesize:25 [2020-11-29 22:13:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:13,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744491543] [2020-11-29 22:13:13,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:13:13,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2020-11-29 22:13:13,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754103856] [2020-11-29 22:13:13,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:13:13,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:13:13,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:13:13,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:13:13,651 INFO L87 Difference]: Start difference. First operand 135 states and 148 transitions. Second operand 12 states. [2020-11-29 22:13:15,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:15,402 INFO L93 Difference]: Finished difference Result 184 states and 203 transitions. [2020-11-29 22:13:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 22:13:15,403 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-11-29 22:13:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:15,404 INFO L225 Difference]: With dead ends: 184 [2020-11-29 22:13:15,404 INFO L226 Difference]: Without dead ends: 184 [2020-11-29 22:13:15,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:13:15,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-29 22:13:15,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 142. [2020-11-29 22:13:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 22:13:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 156 transitions. [2020-11-29 22:13:15,409 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 156 transitions. Word has length 28 [2020-11-29 22:13:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:15,410 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 156 transitions. [2020-11-29 22:13:15,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:13:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2020-11-29 22:13:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:13:15,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:15,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:15,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-29 22:13:15,621 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:13:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2075171245, now seen corresponding path program 1 times [2020-11-29 22:13:15,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:13:15,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777060962] [2020-11-29 22:13:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-11-29 22:13:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:15,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:13:15,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:13:15,803 INFO L384 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 [2020-11-29 22:13:15,803 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:15,806 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:15,806 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:15,806 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 22:13:15,816 INFO L384 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 19 treesize of output 7 [2020-11-29 22:13:15,816 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:15,818 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:15,818 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:15,818 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 22:13:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:15,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:13:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:15,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777060962] [2020-11-29 22:13:15,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:15,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 22:13:15,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247355567] [2020-11-29 22:13:15,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:15,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:13:15,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:15,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:15,830 INFO L87 Difference]: Start difference. First operand 142 states and 156 transitions. Second operand 4 states. [2020-11-29 22:13:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:16,114 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2020-11-29 22:13:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:16,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 22:13:16,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:16,116 INFO L225 Difference]: With dead ends: 144 [2020-11-29 22:13:16,116 INFO L226 Difference]: Without dead ends: 144 [2020-11-29 22:13:16,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-29 22:13:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-11-29 22:13:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 22:13:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2020-11-29 22:13:16,120 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 29 [2020-11-29 22:13:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:16,121 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2020-11-29 22:13:16,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2020-11-29 22:13:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:13:16,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:16,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:16,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-29 22:13:16,322 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:13:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:16,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1998136836, now seen corresponding path program 1 times [2020-11-29 22:13:16,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:13:16,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063466696] [2020-11-29 22:13:16,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-29 22:13:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:16,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:13:16,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:13:16,508 INFO L384 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 [2020-11-29 22:13:16,508 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:16,519 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:16,519 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:16,519 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:13:16,526 INFO L384 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 11 treesize of output 7 [2020-11-29 22:13:16,526 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:16,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:16,546 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:16,546 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-29 22:13:16,562 INFO L384 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 19 treesize of output 11 [2020-11-29 22:13:16,562 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:16,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:16,564 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:16,565 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-11-29 22:13:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:16,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:13:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:16,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063466696] [2020-11-29 22:13:16,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:16,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 22:13:16,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952776866] [2020-11-29 22:13:16,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:13:16,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:13:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:13:16,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:16,587 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand 5 states. [2020-11-29 22:13:17,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:17,247 INFO L93 Difference]: Finished difference Result 209 states and 233 transitions. [2020-11-29 22:13:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:13:17,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-11-29 22:13:17,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:17,249 INFO L225 Difference]: With dead ends: 209 [2020-11-29 22:13:17,249 INFO L226 Difference]: Without dead ends: 209 [2020-11-29 22:13:17,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:13:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-11-29 22:13:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 140. [2020-11-29 22:13:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-29 22:13:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2020-11-29 22:13:17,254 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 28 [2020-11-29 22:13:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:17,255 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2020-11-29 22:13:17,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:13:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2020-11-29 22:13:17,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:13:17,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:17,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:17,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-29 22:13:17,456 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:13:17,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:17,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1998136835, now seen corresponding path program 1 times [2020-11-29 22:13:17,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:13:17,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748249523] [2020-11-29 22:13:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-11-29 22:13:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:17,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:13:17,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:13:17,627 INFO L384 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 [2020-11-29 22:13:17,628 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:17,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:17,633 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:17,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 22:13:17,649 INFO L384 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 11 treesize of output 7 [2020-11-29 22:13:17,650 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:17,659 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:17,663 INFO L384 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 11 treesize of output 7 [2020-11-29 22:13:17,663 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:17,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:17,672 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:17,672 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-11-29 22:13:17,702 INFO L384 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 [2020-11-29 22:13:17,702 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:17,712 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:17,714 INFO L384 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 19 treesize of output 11 [2020-11-29 22:13:17,715 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:17,722 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:17,722 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:17,722 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-11-29 22:13:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:17,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:13:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:17,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748249523] [2020-11-29 22:13:17,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:17,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 22:13:17,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603815486] [2020-11-29 22:13:17,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:13:17,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:13:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:13:17,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:13:17,926 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand 8 states. [2020-11-29 22:13:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:19,693 INFO L93 Difference]: Finished difference Result 235 states and 260 transitions. [2020-11-29 22:13:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:13:19,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-11-29 22:13:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:19,697 INFO L225 Difference]: With dead ends: 235 [2020-11-29 22:13:19,697 INFO L226 Difference]: Without dead ends: 235 [2020-11-29 22:13:19,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:13:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-11-29 22:13:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 139. [2020-11-29 22:13:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-29 22:13:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2020-11-29 22:13:19,702 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 28 [2020-11-29 22:13:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:19,703 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2020-11-29 22:13:19,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:13:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2020-11-29 22:13:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 22:13:19,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:19,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:19,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-29 22:13:19,904 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:13:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:19,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1439532880, now seen corresponding path program 1 times [2020-11-29 22:13:19,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:13:19,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940095120] [2020-11-29 22:13:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-11-29 22:13:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:20,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:13:20,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:13:20,071 INFO L384 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 [2020-11-29 22:13:20,072 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:20,077 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:20,077 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:20,077 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-11-29 22:13:20,099 INFO L384 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 [2020-11-29 22:13:20,099 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:20,107 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:20,107 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:20,107 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-11-29 22:13:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:20,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:13:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:20,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940095120] [2020-11-29 22:13:20,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:20,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2020-11-29 22:13:20,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766298702] [2020-11-29 22:13:20,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:13:20,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:13:20,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:13:20,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:13:20,163 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 9 states. [2020-11-29 22:13:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:20,891 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2020-11-29 22:13:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:13:20,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-11-29 22:13:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:20,893 INFO L225 Difference]: With dead ends: 161 [2020-11-29 22:13:20,893 INFO L226 Difference]: Without dead ends: 161 [2020-11-29 22:13:20,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:13:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-29 22:13:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2020-11-29 22:13:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-29 22:13:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2020-11-29 22:13:20,897 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 30 [2020-11-29 22:13:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:20,897 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2020-11-29 22:13:20,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:13:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2020-11-29 22:13:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:13:20,898 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:20,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:21,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-29 22:13:21,106 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:13:21,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:21,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1889565492, now seen corresponding path program 1 times [2020-11-29 22:13:21,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:13:21,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381724184] [2020-11-29 22:13:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-11-29 22:13:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:21,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:13:21,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:13:21,366 INFO L384 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 11 treesize of output 7 [2020-11-29 22:13:21,366 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:21,389 INFO L384 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 11 treesize of output 7 [2020-11-29 22:13:21,389 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:21,409 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,409 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-11-29 22:13:21,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:21,441 INFO L384 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 0 case distinctions, treesize of input 27 treesize of output 11 [2020-11-29 22:13:21,442 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:21,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:21,468 INFO L384 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 0 case distinctions, treesize of input 27 treesize of output 11 [2020-11-29 22:13:21,469 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,477 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:21,477 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,477 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:56, output treesize:18 [2020-11-29 22:13:21,484 INFO L384 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 [2020-11-29 22:13:21,484 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,495 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:21,497 INFO L384 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 [2020-11-29 22:13:21,497 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,504 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:21,504 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,504 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:10 [2020-11-29 22:13:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:21,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:13:21,543 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:13:21,551 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:21,555 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:21,585 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:21,589 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:21,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:21,597 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-11-29 22:13:21,597 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:97, output treesize:25 [2020-11-29 22:13:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:21,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381724184] [2020-11-29 22:13:21,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:21,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2020-11-29 22:13:21,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480121960] [2020-11-29 22:13:21,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:13:21,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:13:21,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:13:21,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:13:21,615 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand 7 states. [2020-11-29 22:13:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:22,175 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2020-11-29 22:13:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:13:22,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-11-29 22:13:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:22,176 INFO L225 Difference]: With dead ends: 139 [2020-11-29 22:13:22,176 INFO L226 Difference]: Without dead ends: 139 [2020-11-29 22:13:22,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:13:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-29 22:13:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2020-11-29 22:13:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-29 22:13:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2020-11-29 22:13:22,181 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 32 [2020-11-29 22:13:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:22,181 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2020-11-29 22:13:22,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:13:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2020-11-29 22:13:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:13:22,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:22,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:22,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-11-29 22:13:22,392 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:13:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:22,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1512908290, now seen corresponding path program 1 times [2020-11-29 22:13:22,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:13:22,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383894948] [2020-11-29 22:13:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-11-29 22:13:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:22,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:13:22,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:13:22,714 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:22,714 INFO L384 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 19 treesize of output 41 [2020-11-29 22:13:22,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:13:22,716 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:13:22,720 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:22,745 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-11-29 22:13:22,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:22,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:17 [2020-11-29 22:13:22,769 INFO L384 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 [2020-11-29 22:13:22,770 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:22,781 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:22,782 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:22,782 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:27 [2020-11-29 22:13:22,843 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:22,844 INFO L384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 59 [2020-11-29 22:13:22,845 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-11-29 22:13:22,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:13:22,846 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:22,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:22,858 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:22,859 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-11-29 22:13:22,957 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:22,957 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2020-11-29 22:13:22,958 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:22,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:22,967 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:22,967 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:19 [2020-11-29 22:13:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:23,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:13:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:26,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383894948] [2020-11-29 22:13:26,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:26,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 12 [2020-11-29 22:13:26,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448881917] [2020-11-29 22:13:26,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:13:26,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:13:26,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:13:26,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:13:26,920 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand 13 states. [2020-11-29 22:13:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:28,565 INFO L93 Difference]: Finished difference Result 221 states and 244 transitions. [2020-11-29 22:13:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:13:28,565 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-11-29 22:13:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:28,566 INFO L225 Difference]: With dead ends: 221 [2020-11-29 22:13:28,566 INFO L226 Difference]: Without dead ends: 221 [2020-11-29 22:13:28,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:13:28,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-11-29 22:13:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 137. [2020-11-29 22:13:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-29 22:13:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2020-11-29 22:13:28,571 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 32 [2020-11-29 22:13:28,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:28,572 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2020-11-29 22:13:28,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:13:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2020-11-29 22:13:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:13:28,572 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:28,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:28,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-11-29 22:13:28,786 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:13:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:28,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1512908289, now seen corresponding path program 1 times [2020-11-29 22:13:28,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:13:28,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805850448] [2020-11-29 22:13:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-11-29 22:13:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:29,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 22:13:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:13:29,057 INFO L384 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 [2020-11-29 22:13:29,058 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,061 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,061 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:13:29,074 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_158|], 3=[|v_#valid_177|]} [2020-11-29 22:13:29,077 INFO L384 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 [2020-11-29 22:13:29,077 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,086 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,103 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,103 INFO L384 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 19 treesize of output 41 [2020-11-29 22:13:29,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:13:29,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:13:29,111 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,131 INFO L625 ElimStorePlain]: treesize reduction 16, result has 57.9 percent of original size [2020-11-29 22:13:29,132 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,132 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:22 [2020-11-29 22:13:29,150 INFO L384 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 [2020-11-29 22:13:29,150 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,162 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,163 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,163 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:36 [2020-11-29 22:13:29,238 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,238 INFO L384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 66 [2020-11-29 22:13:29,239 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-11-29 22:13:29,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:13:29,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:13:29,242 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-29 22:13:29,295 INFO L625 ElimStorePlain]: treesize reduction 52, result has 49.5 percent of original size [2020-11-29 22:13:29,295 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:29,296 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:51 [2020-11-29 22:13:29,348 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,348 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 42 [2020-11-29 22:13:29,349 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,358 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,358 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:29,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:26 [2020-11-29 22:13:29,418 INFO L441 ElimStorePlain]: Different costs {1=[|v_#length_159|], 3=[|v_#valid_178|]} [2020-11-29 22:13:29,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:29,423 INFO L384 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 14 treesize of output 16 [2020-11-29 22:13:29,423 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,440 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,466 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,466 INFO L384 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 30 [2020-11-29 22:13:29,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:13:29,468 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,484 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,485 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,485 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:18 [2020-11-29 22:13:29,515 INFO L384 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 [2020-11-29 22:13:29,515 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,534 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,539 INFO L384 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 [2020-11-29 22:13:29,540 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,552 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,553 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,553 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:32 [2020-11-29 22:13:29,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:29,636 INFO L384 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 0 case distinctions, treesize of input 29 treesize of output 24 [2020-11-29 22:13:29,637 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,668 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,714 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,714 INFO L384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 68 [2020-11-29 22:13:29,716 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-11-29 22:13:29,716 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:13:29,717 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,745 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:29,746 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:60 [2020-11-29 22:13:29,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 22:13:29,832 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 10 [2020-11-29 22:13:29,833 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,853 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,867 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,867 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2020-11-29 22:13:29,868 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:29,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:29,877 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:13:29,878 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:74, output treesize:22 [2020-11-29 22:13:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:29,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:13:32,205 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem11.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem11.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem11.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem11.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem11.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem11.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (forall ((v_prenex_4 (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem11.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem11.base|) (bvadd v_prenex_4 (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse1 (bvadd .cse1 (_ bv4 32)))))) is different from false [2020-11-29 22:13:44,958 WARN L193 SmtUtils]: Spent 6.22 s on a formula simplification that was a NOOP. DAG size: 34 [2020-11-29 22:13:44,977 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:45,188 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-11-29 22:13:45,188 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:45,197 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:45,456 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-11-29 22:13:45,457 INFO L625 ElimStorePlain]: treesize reduction 58, result has 63.7 percent of original size [2020-11-29 22:13:45,463 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:45,586 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 22:13:45,586 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:13:45,587 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:13:45,588 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:13:45,594 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 4 xjuncts. [2020-11-29 22:13:45,594 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:133, output treesize:33 [2020-11-29 22:13:58,184 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (= (bvadd (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |main_#t~mem7.offset| (_ bv4 32)) c_main_~end~0.base))) c_main_~end~0.base) c_main_~end~0.offset)) (_ bv1 1)) (_ bv0 1))) is different from false [2020-11-29 22:13:58,189 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:13:58,215 INFO L625 ElimStorePlain]: treesize reduction 29, result has 19.4 percent of original size [2020-11-29 22:13:58,216 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:13:58,216 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:7 [2020-11-29 22:13:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:58,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805850448] [2020-11-29 22:13:58,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:58,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 13] imperfect sequences [] total 26 [2020-11-29 22:13:58,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794127531] [2020-11-29 22:13:58,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-29 22:13:58,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:13:58,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-29 22:13:58,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=522, Unknown=7, NotChecked=94, Total=702 [2020-11-29 22:13:58,273 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 27 states. [2020-11-29 22:14:01,244 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-11-29 22:14:01,927 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-11-29 22:14:09,045 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-11-29 22:14:09,347 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-11-29 22:14:09,577 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-11-29 22:14:09,799 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-11-29 22:14:10,729 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-11-29 22:14:11,443 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-11-29 22:14:11,677 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-11-29 22:14:11,947 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-11-29 22:14:15,932 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-11-29 22:14:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:14:16,275 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2020-11-29 22:14:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-29 22:14:16,275 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 32 [2020-11-29 22:14:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:14:16,276 INFO L225 Difference]: With dead ends: 185 [2020-11-29 22:14:16,276 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 22:14:16,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=780, Invalid=2758, Unknown=10, NotChecked=234, Total=3782 [2020-11-29 22:14:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 22:14:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 133. [2020-11-29 22:14:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-29 22:14:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2020-11-29 22:14:16,282 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 32 [2020-11-29 22:14:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:14:16,282 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2020-11-29 22:14:16,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-29 22:14:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2020-11-29 22:14:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:14:16,283 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:14:16,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:14:16,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-11-29 22:14:16,484 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:14:16,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:14:16,484 INFO L82 PathProgramCache]: Analyzing trace with hash 844501217, now seen corresponding path program 1 times [2020-11-29 22:14:16,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:14:16,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642501767] [2020-11-29 22:14:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-11-29 22:14:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:14:16,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:14:16,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:14:16,719 INFO L384 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 [2020-11-29 22:14:16,719 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,721 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:16,721 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,721 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 22:14:16,738 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:16,738 INFO L384 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 14 treesize of output 30 [2020-11-29 22:14:16,739 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:14:16,740 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,753 INFO L625 ElimStorePlain]: treesize reduction 14, result has 48.1 percent of original size [2020-11-29 22:14:16,754 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,754 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2020-11-29 22:14:16,789 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:16,790 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 38 [2020-11-29 22:14:16,790 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:14:16,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:14:16,793 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:16,798 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,798 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:9 [2020-11-29 22:14:16,821 INFO L384 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 [2020-11-29 22:14:16,822 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,830 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:16,830 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,830 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:17 [2020-11-29 22:14:16,931 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:16,931 INFO L384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 56 [2020-11-29 22:14:16,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:14:16,933 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,944 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:16,944 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:14:16,944 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:30 [2020-11-29 22:14:16,993 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:16,993 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2020-11-29 22:14:16,994 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:16,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:17,002 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:14:17,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:4 [2020-11-29 22:14:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:14:17,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:14:19,086 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 22:14:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:14:26,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642501767] [2020-11-29 22:14:26,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:14:26,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 14 [2020-11-29 22:14:26,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042965286] [2020-11-29 22:14:26,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:14:26,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:14:26,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:14:26,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:14:26,854 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 14 states. [2020-11-29 22:14:29,897 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-11-29 22:14:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:14:50,750 INFO L93 Difference]: Finished difference Result 203 states and 217 transitions. [2020-11-29 22:14:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 22:14:50,750 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-11-29 22:14:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:14:50,751 INFO L225 Difference]: With dead ends: 203 [2020-11-29 22:14:50,751 INFO L226 Difference]: Without dead ends: 203 [2020-11-29 22:14:50,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=290, Invalid=630, Unknown=10, NotChecked=0, Total=930 [2020-11-29 22:14:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-29 22:14:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 140. [2020-11-29 22:14:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-29 22:14:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2020-11-29 22:14:50,756 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 34 [2020-11-29 22:14:50,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:14:50,756 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2020-11-29 22:14:50,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:14:50,757 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2020-11-29 22:14:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:14:50,757 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:14:50,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:14:50,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2020-11-29 22:14:50,968 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:14:50,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:14:50,968 INFO L82 PathProgramCache]: Analyzing trace with hash -255916549, now seen corresponding path program 1 times [2020-11-29 22:14:50,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:14:50,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942335580] [2020-11-29 22:14:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-11-29 22:14:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:14:51,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:14:51,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:14:51,117 INFO L384 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 [2020-11-29 22:14:51,117 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:51,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:51,120 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:14:51,120 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 22:14:51,146 INFO L384 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 19 treesize of output 7 [2020-11-29 22:14:51,146 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:51,147 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:51,148 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:14:51,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 22:14:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:14:51,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:14:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:14:51,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942335580] [2020-11-29 22:14:51,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:14:51,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 22:14:51,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489279379] [2020-11-29 22:14:51,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:14:51,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:14:51,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:14:51,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:14:51,180 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand 6 states. [2020-11-29 22:14:51,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:14:51,521 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2020-11-29 22:14:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:14:51,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-11-29 22:14:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:14:51,526 INFO L225 Difference]: With dead ends: 150 [2020-11-29 22:14:51,526 INFO L226 Difference]: Without dead ends: 150 [2020-11-29 22:14:51,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:14:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-29 22:14:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2020-11-29 22:14:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 22:14:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2020-11-29 22:14:51,531 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 34 [2020-11-29 22:14:51,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:14:51,531 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2020-11-29 22:14:51,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:14:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2020-11-29 22:14:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:14:51,531 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:14:51,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:14:51,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-11-29 22:14:51,742 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:14:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:14:51,742 INFO L82 PathProgramCache]: Analyzing trace with hash -234921839, now seen corresponding path program 1 times [2020-11-29 22:14:51,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:14:51,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637729483] [2020-11-29 22:14:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-11-29 22:14:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:14:51,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:14:51,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:14:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:14:51,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:14:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:14:52,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637729483] [2020-11-29 22:14:52,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:14:52,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2020-11-29 22:14:52,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415088768] [2020-11-29 22:14:52,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:14:52,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:14:52,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:14:52,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:14:52,005 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand 6 states. [2020-11-29 22:14:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:14:52,261 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2020-11-29 22:14:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:14:52,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-11-29 22:14:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:14:52,262 INFO L225 Difference]: With dead ends: 145 [2020-11-29 22:14:52,262 INFO L226 Difference]: Without dead ends: 145 [2020-11-29 22:14:52,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:14:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-29 22:14:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-29 22:14:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-29 22:14:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2020-11-29 22:14:52,267 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 34 [2020-11-29 22:14:52,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:14:52,267 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2020-11-29 22:14:52,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:14:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2020-11-29 22:14:52,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 22:14:52,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:14:52,268 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:14:52,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-11-29 22:14:52,468 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:14:52,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:14:52,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2054431148, now seen corresponding path program 1 times [2020-11-29 22:14:52,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:14:52,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947800232] [2020-11-29 22:14:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2020-11-29 22:14:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:14:52,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 22:14:52,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:14:52,715 INFO L384 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 [2020-11-29 22:14:52,716 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:52,726 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:52,728 INFO L384 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 [2020-11-29 22:14:52,728 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:52,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:52,735 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:14:52,735 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:10 [2020-11-29 22:14:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:14:52,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:14:52,919 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:14:52,955 INFO L384 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 8 treesize of output 4 [2020-11-29 22:14:52,967 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:14:52,989 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:14:52,989 INFO L384 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 16 treesize of output 19 [2020-11-29 22:14:52,990 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-29 22:14:52,991 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-11-29 22:14:53,015 INFO L625 ElimStorePlain]: treesize reduction 11, result has 38.9 percent of original size [2020-11-29 22:14:53,015 INFO L513 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2020-11-29 22:14:53,016 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-29 22:14:53,016 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:7 [2020-11-29 22:14:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:14:53,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947800232] [2020-11-29 22:14:53,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:14:53,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-11-29 22:14:53,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702895790] [2020-11-29 22:14:53,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 22:14:53,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:14:53,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 22:14:53,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:14:53,058 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand 17 states. [2020-11-29 22:14:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:14:54,925 INFO L93 Difference]: Finished difference Result 196 states and 211 transitions. [2020-11-29 22:14:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 22:14:54,926 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-11-29 22:14:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:14:54,927 INFO L225 Difference]: With dead ends: 196 [2020-11-29 22:14:54,927 INFO L226 Difference]: Without dead ends: 196 [2020-11-29 22:14:54,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2020-11-29 22:14:54,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-29 22:14:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 156. [2020-11-29 22:14:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 22:14:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2020-11-29 22:14:54,932 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 37 [2020-11-29 22:14:54,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:14:54,932 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2020-11-29 22:14:54,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 22:14:54,932 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2020-11-29 22:14:54,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 22:14:54,932 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:14:54,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:14:55,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-11-29 22:14:55,142 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-11-29 22:14:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:14:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash 737143500, now seen corresponding path program 1 times [2020-11-29 22:14:55,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:14:55,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453856814] [2020-11-29 22:14:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_907fb0be-b03e-47ef-b64f-f231c4076b43/bin/uautomizer/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2020-11-29 22:14:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:14:55,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:14:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:14:55,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:14:55,596 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 22:14:55,596 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:14:55,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2020-11-29 22:14:55,813 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-29 22:14:55,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:14:55 BoogieIcfgContainer [2020-11-29 22:14:55,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:14:55,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:14:55,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:14:55,842 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:14:55,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:11" (3/4) ... [2020-11-29 22:14:55,846 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:14:55,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:14:55,847 INFO L168 Benchmark]: Toolchain (without parser) took 166673.24 ms. Allocated memory was 69.2 MB in the beginning and 142.6 MB in the end (delta: 73.4 MB). Free memory was 33.0 MB in the beginning and 87.8 MB in the end (delta: -54.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:55,847 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 51.1 MB in the end (delta: 72.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:14:55,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.59 ms. Allocated memory is still 69.2 MB. Free memory was 32.8 MB in the beginning and 31.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:55,848 INFO L168 Benchmark]: Boogie Preprocessor took 93.14 ms. Allocated memory is still 69.2 MB. Free memory was 31.4 MB in the beginning and 51.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:55,848 INFO L168 Benchmark]: RCFGBuilder took 1377.38 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 51.1 MB in the beginning and 48.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:55,849 INFO L168 Benchmark]: TraceAbstraction took 164636.10 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 48.3 MB in the beginning and 88.8 MB in the end (delta: -40.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:55,849 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 142.6 MB. Free memory was 88.8 MB in the beginning and 87.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:55,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 51.1 MB in the end (delta: 72.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 552.59 ms. Allocated memory is still 69.2 MB. Free memory was 32.8 MB in the beginning and 31.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.14 ms. Allocated memory is still 69.2 MB. Free memory was 31.4 MB in the beginning and 51.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1377.38 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 51.1 MB in the beginning and 48.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 164636.10 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 48.3 MB in the beginning and 88.8 MB in the end (delta: -40.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.95 ms. Allocated memory is still 142.6 MB. Free memory was 88.8 MB in the beginning and 87.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); VAL [malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L999] null->next = ((void*)0) VAL [malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1000] null->prev = ((void*)0) VAL [malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1001] null->colour = BLACK VAL [malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); VAL [list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1004] list->next = null VAL [list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1005] list->prev = null VAL [list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1006] list->colour = BLACK VAL [list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1008] struct TSLL* end = list; VAL [end={2:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={2:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={2:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1042] EXPR end->colour VAL [end={2:0}, end->colour=1, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={2:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1045] EXPR end->colour VAL [end={2:0}, end->colour=1, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end={2:0}, end->next={1:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={1:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1056] COND TRUE null != list VAL [end={1:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1058] EXPR list->colour VAL [end={1:0}, list={2:0}, list->colour=1, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={1:0}, list={2:0}, list->next={1:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1067] end = list->next [L1068] free(list) VAL [end={1:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1068] free(list) VAL [end={1:0}, list={2:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1068] free(list) [L1069] list = end VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1056] COND FALSE !(null != list) VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] [L1073] return 0; VAL [\result=0, end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={2:0}, malloc(sizeof(struct TSLL))={1:0}, null={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 178 locations, 71 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 164.5s, OverallIterations: 25, TraceHistogramMax: 2, AutomataDifference: 88.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2468 SDtfs, 4378 SDslu, 6491 SDs, 0 SdLazy, 8714 SolverSat, 428 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 26.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1245 GetRequests, 938 SyntacticMatches, 20 SemanticMatches, 287 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 118.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 24 MinimizatonAttempts, 908 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 65.7s InterpolantComputationTime, 607 NumberOfCodeBlocks, 607 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1090 ConstructedInterpolants, 65 QuantifiedInterpolants, 179784 SizeOfPredicates, 189 NumberOfNonLiveVariables, 3381 ConjunctsInSsa, 200 ConjunctsInUnsatCore, 48 InterpolantComputations, 44 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...