./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple-2.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_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:51:46,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:51:46,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:51:46,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:51:46,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:51:46,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:51:46,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:51:46,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:51:46,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:51:46,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:51:46,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:51:46,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:51:46,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:51:46,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:51:46,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:51:46,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:51:46,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:51:46,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:51:46,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:51:46,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:51:46,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:51:46,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:51:46,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:51:46,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:51:46,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:51:46,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:51:46,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:51:46,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:51:46,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:51:46,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:51:46,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:51:46,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:51:46,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:51:46,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:51:46,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:51:46,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:51:46,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:51:46,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:51:46,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:51:46,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:51:46,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:51:46,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 20:51:46,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:51:46,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:51:46,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:51:46,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:51:46,916 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:51:46,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:51:46,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:51:46,917 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:51:46,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:51:46,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:51:46,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:51:46,918 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 20:51:46,918 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 20:51:46,918 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 20:51:46,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:51:46,919 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 20:51:46,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:51:46,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:51:46,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:51:46,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:51:46,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:51:46,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:51:46,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:51:46,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:51:46,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:51:46,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:51:46,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:51:46,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:51:46,922 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_9a30acb2-7469-4642-b61b-0da96a4fe575/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 [2020-11-29 20:51:47,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:51:47,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:51:47,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:51:47,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:51:47,214 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:51:47,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple-2.i [2020-11-29 20:51:47,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data/495b02560/b89db560578348b4acbd10b7a5192cf3/FLAG2d4b1e3f5 [2020-11-29 20:51:47,797 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:51:47,798 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/sv-benchmarks/c/list-properties/simple-2.i [2020-11-29 20:51:47,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data/495b02560/b89db560578348b4acbd10b7a5192cf3/FLAG2d4b1e3f5 [2020-11-29 20:51:48,115 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data/495b02560/b89db560578348b4acbd10b7a5192cf3 [2020-11-29 20:51:48,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:51:48,119 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 20:51:48,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:51:48,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:51:48,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:51:48,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129822bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48, skipping insertion in model container [2020-11-29 20:51:48,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:51:48,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:51:48,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:51:48,582 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:51:48,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:51:48,709 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:51:48,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48 WrapperNode [2020-11-29 20:51:48,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:51:48,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:51:48,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:51:48,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:51:48,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (1/1) ... [2020-11-29 20:51:48,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:51:48,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:51:48,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:51:48,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:51:48,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:51:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 20:51:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:51:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 20:51:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 20:51:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 20:51:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 20:51:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 20:51:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 20:51:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-29 20:51:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 20:51:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 20:51:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 20:51:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 20:51:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 20:51:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 20:51:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:51:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 20:51:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 20:51:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 20:51:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 20:51:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 20:51:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 20:51:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 20:51:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 20:51:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 20:51:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 20:51:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 20:51:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 20:51:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 20:51:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 20:51:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 20:51:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 20:51:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 20:51:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 20:51:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 20:51:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 20:51:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 20:51:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 20:51:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 20:51:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 20:51:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 20:51:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 20:51:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 20:51:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 20:51:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 20:51:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 20:51:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 20:51:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 20:51:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 20:51:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 20:51:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 20:51:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 20:51:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 20:51:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 20:51:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 20:51:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 20:51:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 20:51:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 20:51:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 20:51:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 20:51:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 20:51:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 20:51:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 20:51:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 20:51:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 20:51:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 20:51:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 20:51:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 20:51:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 20:51:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 20:51:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 20:51:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 20:51:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 20:51:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 20:51:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 20:51:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 20:51:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 20:51:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 20:51:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 20:51:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 20:51:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 20:51:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 20:51:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 20:51:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 20:51:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 20:51:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 20:51:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 20:51:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 20:51:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 20:51:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 20:51:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 20:51:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 20:51:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 20:51:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 20:51:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 20:51:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 20:51:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 20:51:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 20:51:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 20:51:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 20:51:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 20:51:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 20:51:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 20:51:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 20:51:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 20:51:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 20:51:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 20:51:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 20:51:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 20:51:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 20:51:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 20:51:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 20:51:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 20:51:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 20:51:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 20:51:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 20:51:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 20:51:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 20:51:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 20:51:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 20:51:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 20:51:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 20:51:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 20:51:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-29 20:51:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 20:51:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:51:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:51:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:51:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:51:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:51:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 20:51:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:51:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:51:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:51:49,366 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-29 20:51:49,603 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:51:49,603 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-29 20:51:49,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:51:49 BoogieIcfgContainer [2020-11-29 20:51:49,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:51:49,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:51:49,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:51:49,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:51:49,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:51:48" (1/3) ... [2020-11-29 20:51:49,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4489ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:51:49, skipping insertion in model container [2020-11-29 20:51:49,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:48" (2/3) ... [2020-11-29 20:51:49,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4489ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:51:49, skipping insertion in model container [2020-11-29 20:51:49,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:51:49" (3/3) ... [2020-11-29 20:51:49,623 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-11-29 20:51:49,633 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:51:49,638 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-11-29 20:51:49,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-11-29 20:51:49,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:51:49,678 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 20:51:49,678 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:51:49,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:51:49,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:51:49,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:51:49,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:51:49,679 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:51:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-11-29 20:51:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:51:49,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:49,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:51:49,701 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:49,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:49,707 INFO L82 PathProgramCache]: Analyzing trace with hash -668473910, now seen corresponding path program 1 times [2020-11-29 20:51:49,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:49,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116103916] [2020-11-29 20:51:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:49,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:51:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:49,990 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 20:51:49,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116103916] [2020-11-29 20:51:49,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:51:49,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:51:49,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230037145] [2020-11-29 20:51:49,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:51:49,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:51:50,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:51:50,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:51:50,019 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-11-29 20:51:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:51:50,197 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-11-29 20:51:50,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:51:50,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 20:51:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:51:50,211 INFO L225 Difference]: With dead ends: 52 [2020-11-29 20:51:50,214 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 20:51:50,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 20:51:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 20:51:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-29 20:51:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 20:51:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-11-29 20:51:50,261 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 10 [2020-11-29 20:51:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:51:50,262 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-11-29 20:51:50,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:51:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-11-29 20:51:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:51:50,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:50,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:51:50,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:51:50,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:50,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:50,263 INFO L82 PathProgramCache]: Analyzing trace with hash 752120503, now seen corresponding path program 1 times [2020-11-29 20:51:50,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:50,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604526705] [2020-11-29 20:51:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:50,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:51:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:50,423 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 20:51:50,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604526705] [2020-11-29 20:51:50,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:51:50,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:51:50,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031608033] [2020-11-29 20:51:50,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:51:50,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:51:50,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:51:50,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:51:50,428 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-11-29 20:51:50,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:51:50,697 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-11-29 20:51:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:51:50,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 20:51:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:51:50,701 INFO L225 Difference]: With dead ends: 72 [2020-11-29 20:51:50,701 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 20:51:50,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 20:51:50,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 20:51:50,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-11-29 20:51:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-29 20:51:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-11-29 20:51:50,714 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2020-11-29 20:51:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:51:50,714 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-11-29 20:51:50,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:51:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-11-29 20:51:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:51:50,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:50,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:51:50,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:51:50,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash 752120502, now seen corresponding path program 1 times [2020-11-29 20:51:50,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:50,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118072743] [2020-11-29 20:51:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:50,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:51:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:50,849 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 20:51:50,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118072743] [2020-11-29 20:51:50,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:51:50,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:51:50,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44957417] [2020-11-29 20:51:50,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:51:50,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:51:50,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:51:50,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:51:50,857 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-11-29 20:51:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:51:51,033 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-11-29 20:51:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:51:51,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 20:51:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:51:51,035 INFO L225 Difference]: With dead ends: 57 [2020-11-29 20:51:51,035 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 20:51:51,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 20:51:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 20:51:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-11-29 20:51:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 20:51:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-29 20:51:51,042 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2020-11-29 20:51:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:51:51,042 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-29 20:51:51,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:51:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-29 20:51:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:51:51,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:51,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:51:51,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:51:51,044 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2025061653, now seen corresponding path program 1 times [2020-11-29 20:51:51,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:51,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961183799] [2020-11-29 20:51:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:51:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:51,138 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 20:51:51,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961183799] [2020-11-29 20:51:51,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:51:51,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:51:51,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467819799] [2020-11-29 20:51:51,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:51:51,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:51:51,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:51:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:51:51,147 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 5 states. [2020-11-29 20:51:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:51:51,294 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-11-29 20:51:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:51:51,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 20:51:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:51:51,298 INFO L225 Difference]: With dead ends: 58 [2020-11-29 20:51:51,298 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 20:51:51,298 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 20:51:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 20:51:51,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-11-29 20:51:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 20:51:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-11-29 20:51:51,307 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 16 [2020-11-29 20:51:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:51:51,308 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-11-29 20:51:51,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:51:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-11-29 20:51:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:51:51,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:51,309 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 20:51:51,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:51:51,309 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:51,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:51,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1540406454, now seen corresponding path program 1 times [2020-11-29 20:51:51,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:51,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106937020] [2020-11-29 20:51:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:51:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:51,490 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 20:51:51,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106937020] [2020-11-29 20:51:51,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:51:51,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 20:51:51,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264458110] [2020-11-29 20:51:51,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:51:51,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:51:51,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:51:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:51:51,503 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 8 states. [2020-11-29 20:51:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:51:51,755 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-11-29 20:51:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:51:51,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-29 20:51:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:51:51,757 INFO L225 Difference]: With dead ends: 89 [2020-11-29 20:51:51,757 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 20:51:51,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:51:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 20:51:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 58. [2020-11-29 20:51:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-29 20:51:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-11-29 20:51:51,767 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 19 [2020-11-29 20:51:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:51:51,768 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-11-29 20:51:51,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:51:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-11-29 20:51:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:51:51,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:51,769 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:51:51,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:51:51,769 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:51,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:51,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1323044694, now seen corresponding path program 1 times [2020-11-29 20:51:51,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:51,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584537480] [2020-11-29 20:51:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:51,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:51:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:51:51,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584537480] [2020-11-29 20:51:51,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:51:51,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:51:51,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419664454] [2020-11-29 20:51:51,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:51:51,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:51:51,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:51:51,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:51:51,896 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 7 states. [2020-11-29 20:51:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:51:52,290 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-11-29 20:51:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:51:52,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 20:51:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:51:52,291 INFO L225 Difference]: With dead ends: 67 [2020-11-29 20:51:52,291 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 20:51:52,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:51:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 20:51:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2020-11-29 20:51:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 20:51:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-11-29 20:51:52,297 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 19 [2020-11-29 20:51:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:51:52,297 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-11-29 20:51:52,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:51:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-11-29 20:51:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:51:52,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:52,298 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:51:52,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:51:52,299 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:52,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:52,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1323044695, now seen corresponding path program 1 times [2020-11-29 20:51:52,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:52,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408445596] [2020-11-29 20:51:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:52,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:51:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:51:52,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408445596] [2020-11-29 20:51:52,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:51:52,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:51:52,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862113895] [2020-11-29 20:51:52,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:51:52,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:51:52,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:51:52,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:51:52,399 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2020-11-29 20:51:52,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:51:52,631 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-11-29 20:51:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:51:52,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 20:51:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:51:52,632 INFO L225 Difference]: With dead ends: 61 [2020-11-29 20:51:52,632 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 20:51:52,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:51:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 20:51:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2020-11-29 20:51:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 20:51:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-11-29 20:51:52,637 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 19 [2020-11-29 20:51:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:51:52,638 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-11-29 20:51:52,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:51:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-11-29 20:51:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 20:51:52,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:52,638 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:51:52,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:51:52,639 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:52,639 INFO L82 PathProgramCache]: Analyzing trace with hash 512039653, now seen corresponding path program 1 times [2020-11-29 20:51:52,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:52,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503256087] [2020-11-29 20:51:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:51:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:52,816 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 20:51:52,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503256087] [2020-11-29 20:51:52,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311449144] [2020-11-29 20:51:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:51:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:51:52,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 20:51:52,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:51:53,206 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 20:51:53,207 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:51:53,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:51:53,223 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 20:51:53,224 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:51:53,233 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:51:53,233 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:51:53,233 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-11-29 20:51:53,292 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 20:51:53,293 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:51:53,299 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:51:53,302 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 20:51:53,303 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:51:53,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:51:53,310 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 20:51:53,310 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-11-29 20:51:53,314 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 20:51:53,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:51:53,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2020-11-29 20:51:53,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524536050] [2020-11-29 20:51:53,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:51:53,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:51:53,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:51:53,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:51:53,318 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 12 states. [2020-11-29 20:51:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:51:53,753 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-11-29 20:51:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:51:53,753 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-11-29 20:51:53,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:51:53,754 INFO L225 Difference]: With dead ends: 60 [2020-11-29 20:51:53,754 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 20:51:53,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:51:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 20:51:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-11-29 20:51:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 20:51:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-11-29 20:51:53,759 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 20 [2020-11-29 20:51:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:51:53,760 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-11-29 20:51:53,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:51:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-11-29 20:51:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 20:51:53,761 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:53,761 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 20:51:53,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-29 20:51:53,987 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:53,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:53,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1306641237, now seen corresponding path program 1 times [2020-11-29 20:51:53,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:51:53,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385982248] [2020-11-29 20:51:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:51:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:51:54,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:51:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:51:54,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:51:54,066 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:51:54,066 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:51:54,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:51:54,087 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-29 20:51:54,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:51:54 BoogieIcfgContainer [2020-11-29 20:51:54,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:51:54,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:51:54,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:51:54,111 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:51:54,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:51:49" (3/4) ... [2020-11-29 20:51:54,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:51:54,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:51:54,117 INFO L168 Benchmark]: Toolchain (without parser) took 5996.98 ms. Allocated memory was 83.9 MB in the beginning and 157.3 MB in the end (delta: 73.4 MB). Free memory was 54.7 MB in the beginning and 100.5 MB in the end (delta: -45.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:51:54,119 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 83.9 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:51:54,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.91 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 54.7 MB in the beginning and 68.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:51:54,125 INFO L168 Benchmark]: Boogie Preprocessor took 118.50 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 66.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:51:54,126 INFO L168 Benchmark]: RCFGBuilder took 774.60 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 82.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:51:54,126 INFO L168 Benchmark]: TraceAbstraction took 4503.60 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 82.0 MB in the beginning and 101.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:51:54,127 INFO L168 Benchmark]: Witness Printer took 4.77 ms. Allocated memory is still 157.3 MB. Free memory is still 100.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:51:54,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 83.9 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 589.91 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 54.7 MB in the beginning and 68.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.50 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 66.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 774.60 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 82.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4503.60 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 82.0 MB in the beginning and 101.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.77 ms. Allocated memory is still 157.3 MB. Free memory is still 100.5 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L544] p->n = 0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L545] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L546] COND TRUE p!=0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L547] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1] [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}] [L550] p = p->n [L546] COND FALSE !(p!=0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] [L552] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 249 SDtfs, 481 SDslu, 385 SDs, 0 SdLazy, 941 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 96 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 14384 SizeOfPredicates, 12 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 6/8 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 20:51:56,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:51:56,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:51:56,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:51:56,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:51:56,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:51:56,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:51:56,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:51:56,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:51:56,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:51:56,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:51:56,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:51:56,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:51:56,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:51:56,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:51:56,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:51:56,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:51:56,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:51:56,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:51:56,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:51:56,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:51:56,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:51:56,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:51:56,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:51:56,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:51:56,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:51:56,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:51:56,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:51:56,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:51:56,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:51:56,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:51:56,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:51:56,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:51:56,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:51:56,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:51:56,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:51:56,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:51:56,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:51:56,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:51:56,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:51:56,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:51:56,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-29 20:51:56,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:51:56,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:51:56,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:51:56,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:51:56,866 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:51:56,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:51:56,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:51:56,867 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:51:56,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:51:56,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:51:56,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:51:56,869 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 20:51:56,869 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 20:51:56,870 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 20:51:56,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:51:56,870 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 20:51:56,871 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:51:56,871 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:51:56,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:51:56,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:51:56,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:51:56,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:51:56,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:51:56,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:51:56,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:51:56,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:51:56,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:51:56,874 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:51:56,874 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:51:56,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:51:56,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:51:56,875 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_9a30acb2-7469-4642-b61b-0da96a4fe575/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 [2020-11-29 20:51:57,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:51:57,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:51:57,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:51:57,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:51:57,344 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:51:57,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple-2.i [2020-11-29 20:51:57,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data/0e7702761/7102cade339c4c8b81ab2376515b5cb5/FLAGd2f40b1fa [2020-11-29 20:51:58,036 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:51:58,036 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/sv-benchmarks/c/list-properties/simple-2.i [2020-11-29 20:51:58,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data/0e7702761/7102cade339c4c8b81ab2376515b5cb5/FLAGd2f40b1fa [2020-11-29 20:51:58,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/bin/uautomizer/data/0e7702761/7102cade339c4c8b81ab2376515b5cb5 [2020-11-29 20:51:58,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:51:58,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 20:51:58,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:51:58,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:51:58,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:51:58,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eaabefd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58, skipping insertion in model container [2020-11-29 20:51:58,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:51:58,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:51:58,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:51:58,796 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:51:58,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:51:58,914 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:51:58,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58 WrapperNode [2020-11-29 20:51:58,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:51:58,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:51:58,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:51:58,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:51:58,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (1/1) ... [2020-11-29 20:51:58,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:51:58,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:51:58,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:51:58,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:51:58,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:51:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 20:51:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:51:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 20:51:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 20:51:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 20:51:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 20:51:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 20:51:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 20:51:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 20:51:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-29 20:51:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 20:51:59,072 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 20:51:59,072 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 20:51:59,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 20:51:59,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 20:51:59,073 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 20:51:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:51:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 20:51:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 20:51:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 20:51:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 20:51:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 20:51:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 20:51:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 20:51:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 20:51:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 20:51:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 20:51:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 20:51:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 20:51:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 20:51:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 20:51:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 20:51:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 20:51:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 20:51:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 20:51:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 20:51:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 20:51:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 20:51:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 20:51:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 20:51:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 20:51:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 20:51:59,081 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 20:51:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 20:51:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 20:51:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 20:51:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 20:51:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 20:51:59,082 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 20:51:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 20:51:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 20:51:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 20:51:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 20:51:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 20:51:59,083 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 20:51:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 20:51:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 20:51:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 20:51:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 20:51:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 20:51:59,084 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 20:51:59,085 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 20:51:59,085 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 20:51:59,085 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 20:51:59,085 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 20:51:59,085 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 20:51:59,085 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 20:51:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 20:51:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 20:51:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 20:51:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 20:51:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 20:51:59,086 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 20:51:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 20:51:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 20:51:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 20:51:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 20:51:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 20:51:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 20:51:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 20:51:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 20:51:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 20:51:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 20:51:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 20:51:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 20:51:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 20:51:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 20:51:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 20:51:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 20:51:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 20:51:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 20:51:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 20:51:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 20:51:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 20:51:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 20:51:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 20:51:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 20:51:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 20:51:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 20:51:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 20:51:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 20:51:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 20:51:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 20:51:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 20:51:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 20:51:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 20:51:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 20:51:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 20:51:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 20:51:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 20:51:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 20:51:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 20:51:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 20:51:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 20:51:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 20:51:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 20:51:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 20:51:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 20:51:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 20:51:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 20:51:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 20:51:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 20:51:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 20:51:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 20:51:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-29 20:51:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 20:51:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:51:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 20:51:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:51:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:51:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 20:51:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 20:51:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:51:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:51:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 20:51:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-29 20:51:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-29 20:51:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:51:59,511 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-29 20:51:59,824 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:51:59,824 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-29 20:51:59,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:51:59 BoogieIcfgContainer [2020-11-29 20:51:59,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:51:59,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:51:59,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:51:59,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:51:59,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:51:58" (1/3) ... [2020-11-29 20:51:59,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ec1afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:51:59, skipping insertion in model container [2020-11-29 20:51:59,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:51:58" (2/3) ... [2020-11-29 20:51:59,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ec1afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:51:59, skipping insertion in model container [2020-11-29 20:51:59,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:51:59" (3/3) ... [2020-11-29 20:51:59,834 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-11-29 20:51:59,844 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:51:59,848 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-11-29 20:51:59,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-11-29 20:51:59,874 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:51:59,874 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 20:51:59,874 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:51:59,874 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:51:59,874 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:51:59,874 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:51:59,875 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:51:59,875 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:51:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-29 20:51:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:51:59,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:51:59,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:51:59,903 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:51:59,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:51:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 157453930, now seen corresponding path program 1 times [2020-11-29 20:51:59,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:51:59,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614292172] [2020-11-29 20:51:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:52:00,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:52:00,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:52:00,155 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 20:52:00,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:52:00,172 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 20:52:00,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614292172] [2020-11-29 20:52:00,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:52:00,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 20:52:00,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629628484] [2020-11-29 20:52:00,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:52:00,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:52:00,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:52:00,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:52:00,206 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-11-29 20:52:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:52:00,227 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-11-29 20:52:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:52:00,228 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 20:52:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:52:00,235 INFO L225 Difference]: With dead ends: 51 [2020-11-29 20:52:00,235 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 20:52:00,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:52:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 20:52:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-29 20:52:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 20:52:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-29 20:52:00,290 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 10 [2020-11-29 20:52:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:52:00,291 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-29 20:52:00,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:52:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-29 20:52:00,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:52:00,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:52:00,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:52:00,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:52:00,509 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:52:00,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:52:00,512 INFO L82 PathProgramCache]: Analyzing trace with hash 157453248, now seen corresponding path program 1 times [2020-11-29 20:52:00,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:52:00,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330570717] [2020-11-29 20:52:00,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:52:00,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:52:00,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:52:00,712 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 20:52:00,713 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:00,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:00,725 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:52:00,725 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 20:52:00,745 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 20:52:00,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:52:00,765 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 20:52:00,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330570717] [2020-11-29 20:52:00,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:52:00,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 20:52:00,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832611862] [2020-11-29 20:52:00,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:52:00,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:52:00,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:52:00,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:52:00,768 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 4 states. [2020-11-29 20:52:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:52:00,997 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-11-29 20:52:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:52:00,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:52:00,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:52:00,999 INFO L225 Difference]: With dead ends: 51 [2020-11-29 20:52:00,999 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 20:52:01,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:52:01,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 20:52:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-11-29 20:52:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 20:52:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-11-29 20:52:01,006 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 10 [2020-11-29 20:52:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:52:01,006 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-11-29 20:52:01,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:52:01,007 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-11-29 20:52:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:52:01,010 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:52:01,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:52:01,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:52:01,226 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:52:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:52:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash 157453249, now seen corresponding path program 1 times [2020-11-29 20:52:01,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:52:01,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443485011] [2020-11-29 20:52:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:52:01,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:52:01,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:52:01,390 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 20:52:01,390 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:01,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:01,397 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:52:01,397 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 20:52:01,432 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 20:52:01,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:52:01,537 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 20:52:01,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443485011] [2020-11-29 20:52:01,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:52:01,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 20:52:01,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537429137] [2020-11-29 20:52:01,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:52:01,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:52:01,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:52:01,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:52:01,539 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-11-29 20:52:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:52:01,941 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-11-29 20:52:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:52:01,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 20:52:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:52:01,945 INFO L225 Difference]: With dead ends: 59 [2020-11-29 20:52:01,945 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 20:52:01,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:52:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 20:52:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2020-11-29 20:52:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 20:52:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-11-29 20:52:01,963 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2020-11-29 20:52:01,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:52:01,963 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-11-29 20:52:01,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:52:01,964 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-11-29 20:52:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:52:01,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:52:01,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:52:02,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 20:52:02,180 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:52:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:52:02,181 INFO L82 PathProgramCache]: Analyzing trace with hash 5227808, now seen corresponding path program 1 times [2020-11-29 20:52:02,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:52:02,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219523494] [2020-11-29 20:52:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:52:02,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:52:02,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:52:02,383 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 20:52:02,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:52:02,393 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 20:52:02,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219523494] [2020-11-29 20:52:02,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:52:02,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 20:52:02,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432216568] [2020-11-29 20:52:02,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:52:02,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:52:02,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:52:02,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:52:02,394 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2020-11-29 20:52:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:52:02,557 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-11-29 20:52:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:52:02,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 20:52:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:52:02,560 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:52:02,560 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 20:52:02,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 20:52:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 20:52:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-11-29 20:52:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 20:52:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-11-29 20:52:02,566 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 15 [2020-11-29 20:52:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:52:02,566 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-11-29 20:52:02,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:52:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-11-29 20:52:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:52:02,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:52:02,567 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 20:52:02,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 20:52:02,783 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:52:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:52:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1162167200, now seen corresponding path program 1 times [2020-11-29 20:52:02,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:52:02,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925814082] [2020-11-29 20:52:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:52:02,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:52:02,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:52:02,999 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 20:52:02,999 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:03,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:03,011 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:52:03,011 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-29 20:52:03,055 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-29 20:52:03,055 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 1 case distinctions, treesize of input 29 treesize of output 13 [2020-11-29 20:52:03,056 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:03,059 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:03,059 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:52:03,060 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-11-29 20:52:03,089 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 17 treesize of output 9 [2020-11-29 20:52:03,090 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:03,092 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:03,092 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 20:52:03,093 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-11-29 20:52:03,106 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 20:52:03,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:52:03,126 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 20:52:03,134 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:03,135 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 20:52:03,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:17 [2020-11-29 20:52:03,197 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 79 treesize of output 75 [2020-11-29 20:52:03,205 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:03,281 INFO L625 ElimStorePlain]: treesize reduction 34, result has 39.3 percent of original size [2020-11-29 20:52:03,288 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-29 20:52:03,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2020-11-29 20:52:03,299 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 20:52:03,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925814082] [2020-11-29 20:52:03,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:52:03,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2020-11-29 20:52:03,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325803992] [2020-11-29 20:52:03,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:52:03,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:52:03,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:52:03,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:52:03,301 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 8 states. [2020-11-29 20:52:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:52:03,786 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2020-11-29 20:52:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:52:03,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-11-29 20:52:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:52:03,789 INFO L225 Difference]: With dead ends: 86 [2020-11-29 20:52:03,789 INFO L226 Difference]: Without dead ends: 86 [2020-11-29 20:52:03,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:52:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-29 20:52:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2020-11-29 20:52:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 20:52:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-11-29 20:52:03,797 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 18 [2020-11-29 20:52:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:52:03,797 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-11-29 20:52:03,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:52:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-11-29 20:52:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:52:03,798 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:52:03,799 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 20:52:04,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 20:52:04,015 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:52:04,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:52:04,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1469140663, now seen corresponding path program 1 times [2020-11-29 20:52:04,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:52:04,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045872953] [2020-11-29 20:52:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:52:04,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:52:04,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:52:04,190 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 20:52:04,190 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:04,192 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:04,192 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:52:04,192 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 20:52:04,216 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 20:52:04,216 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:04,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:04,226 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 20:52:04,226 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-29 20:52:04,246 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 23 treesize of output 11 [2020-11-29 20:52:04,247 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:04,249 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:04,249 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 20:52:04,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-29 20:52:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:52:04,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:52:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:52:04,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045872953] [2020-11-29 20:52:04,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:52:04,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 20:52:04,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75200818] [2020-11-29 20:52:04,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:52:04,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:52:04,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:52:04,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:52:04,299 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 6 states. [2020-11-29 20:52:04,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:52:04,737 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-11-29 20:52:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:52:04,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-29 20:52:04,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:52:04,739 INFO L225 Difference]: With dead ends: 67 [2020-11-29 20:52:04,739 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 20:52:04,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:52:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 20:52:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2020-11-29 20:52:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 20:52:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-11-29 20:52:04,744 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 17 [2020-11-29 20:52:04,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:52:04,745 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-11-29 20:52:04,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:52:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-11-29 20:52:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:52:04,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:52:04,746 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 20:52:04,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 20:52:04,956 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:52:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:52:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1469140664, now seen corresponding path program 1 times [2020-11-29 20:52:04,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:52:04,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509771757] [2020-11-29 20:52:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:52:05,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:52:05,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:52:05,168 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 20:52:05,168 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:05,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:05,201 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:52:05,201 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 20:52:05,239 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 20:52:05,239 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:05,257 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:05,264 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 20:52:05,264 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:05,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:05,284 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 20:52:05,285 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-29 20:52:05,324 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 20:52:05,325 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:05,365 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:05,373 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 21 treesize of output 9 [2020-11-29 20:52:05,373 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:05,400 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:05,400 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 20:52:05,400 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-29 20:52:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:52:05,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:52:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:52:05,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509771757] [2020-11-29 20:52:05,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:52:05,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-29 20:52:05,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329246995] [2020-11-29 20:52:05,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:52:05,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:52:05,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:52:05,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:52:05,652 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-11-29 20:52:06,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:52:06,595 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-11-29 20:52:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:52:06,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-29 20:52:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:52:06,596 INFO L225 Difference]: With dead ends: 63 [2020-11-29 20:52:06,597 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 20:52:06,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:52:06,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 20:52:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2020-11-29 20:52:06,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 20:52:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-11-29 20:52:06,607 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 17 [2020-11-29 20:52:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:52:06,609 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-11-29 20:52:06,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:52:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-11-29 20:52:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:52:06,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:52:06,610 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:52:06,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 20:52:06,820 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:52:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:52:06,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1671545519, now seen corresponding path program 1 times [2020-11-29 20:52:06,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:52:06,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586665557] [2020-11-29 20:52:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:52:06,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:52:06,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:52:07,023 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 20:52:07,024 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:07,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:07,037 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 20:52:07,037 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:07,045 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:07,045 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:52:07,045 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-11-29 20:52:07,104 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 20:52:07,105 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:07,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:07,116 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 20:52:07,116 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 20:52:07,121 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:52:07,121 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 20:52:07,121 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-11-29 20:52:07,154 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 20:52:07,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:52:07,190 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 35 treesize of output 29 [2020-11-29 20:52:07,192 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-29 20:52:07,227 INFO L625 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2020-11-29 20:52:07,228 INFO L513 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2020-11-29 20:52:07,228 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-29 20:52:07,228 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2020-11-29 20:52:07,250 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 20:52:07,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586665557] [2020-11-29 20:52:07,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:52:07,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-29 20:52:07,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408309422] [2020-11-29 20:52:07,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:52:07,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:52:07,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:52:07,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:52:07,252 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2020-11-29 20:52:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:52:11,820 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-11-29 20:52:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:52:11,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 20:52:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:52:11,822 INFO L225 Difference]: With dead ends: 55 [2020-11-29 20:52:11,822 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 20:52:11,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:52:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 20:52:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-11-29 20:52:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 20:52:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-11-29 20:52:11,826 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 19 [2020-11-29 20:52:11,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:52:11,826 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-11-29 20:52:11,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:52:11,826 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-11-29 20:52:11,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 20:52:11,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:52:11,827 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 20:52:12,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 20:52:12,032 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 20:52:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:52:12,032 INFO L82 PathProgramCache]: Analyzing trace with hash 278302293, now seen corresponding path program 1 times [2020-11-29 20:52:12,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:52:12,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234329738] [2020-11-29 20:52:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a30acb2-7469-4642-b61b-0da96a4fe575/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 20:52:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:52:12,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:52:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:52:12,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:52:12,333 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 20:52:12,333 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:52:12,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-29 20:52:12,542 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-29 20:52:12,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:52:12 BoogieIcfgContainer [2020-11-29 20:52:12,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:52:12,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:52:12,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:52:12,557 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:52:12,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:51:59" (3/4) ... [2020-11-29 20:52:12,560 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:52:12,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:52:12,562 INFO L168 Benchmark]: Toolchain (without parser) took 14250.03 ms. Allocated memory was 50.3 MB in the beginning and 119.5 MB in the end (delta: 69.2 MB). Free memory was 28.3 MB in the beginning and 61.0 MB in the end (delta: -32.7 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:52:12,562 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:52:12,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.82 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 28.1 MB in the beginning and 37.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:52:12,563 INFO L168 Benchmark]: Boogie Preprocessor took 70.56 ms. Allocated memory is still 67.1 MB. Free memory was 37.5 MB in the beginning and 34.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:52:12,564 INFO L168 Benchmark]: RCFGBuilder took 839.13 ms. Allocated memory is still 67.1 MB. Free memory was 34.6 MB in the beginning and 41.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:52:12,564 INFO L168 Benchmark]: TraceAbstraction took 12728.25 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 41.1 MB in the beginning and 61.0 MB in the end (delta: -19.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:52:12,565 INFO L168 Benchmark]: Witness Printer took 4.02 ms. Allocated memory is still 119.5 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:52:12,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 600.82 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 28.1 MB in the beginning and 37.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.56 ms. Allocated memory is still 67.1 MB. Free memory was 37.5 MB in the beginning and 34.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 839.13 ms. Allocated memory is still 67.1 MB. Free memory was 34.6 MB in the beginning and 41.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12728.25 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 41.1 MB in the beginning and 61.0 MB in the end (delta: -19.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.02 ms. Allocated memory is still 119.5 MB. Free memory is still 61.0 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L533] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L544] p->n = 0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L545] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L546] COND TRUE p!=0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L547] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1] [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}] [L550] p = p->n [L546] COND FALSE !(p!=0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] [L552] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 76 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.6s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 252 SDtfs, 387 SDslu, 463 SDs, 0 SdLazy, 622 SolverSat, 86 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 216 ConstructedInterpolants, 1 QuantifiedInterpolants, 14850 SizeOfPredicates, 49 NumberOfNonLiveVariables, 646 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 6/8 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...