./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0539ac658883b1641a4574e23a99ec21471d0b6a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0539ac658883b1641a4574e23a99ec21471d0b6a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:58:07,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:58:07,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:58:07,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:58:07,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:58:07,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:58:07,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:58:07,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:58:07,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:58:07,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:58:07,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:58:07,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:58:07,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:58:07,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:58:07,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:58:07,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:58:07,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:58:07,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:58:07,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:58:07,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:58:07,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:58:07,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:58:07,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:58:07,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:58:07,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:58:07,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:58:07,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:58:07,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:58:07,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:58:07,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:58:07,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:58:07,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:58:07,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:58:07,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:58:07,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:58:07,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:58:07,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:58:07,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:58:07,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:58:07,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:58:07,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:58:07,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:58:07,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:58:07,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:58:07,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:58:07,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:58:07,951 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:58:07,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:58:07,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:58:07,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:58:07,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:58:07,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:58:07,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:58:07,955 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:58:07,955 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:58:07,955 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:58:07,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:58:07,955 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:58:07,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:58:07,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:58:07,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:58:07,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:58:07,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:58:07,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:58:07,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:58:07,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:58:07,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:58:07,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:58:07,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:58:07,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:58:07,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-10-20 05:58:08,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:58:08,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:58:08,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:58:08,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:58:08,255 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:58:08,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-20 05:58:08,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87910b15/1930b0f0757e4d87bd66aef899d93942/FLAG23c05cad8 [2020-10-20 05:58:08,824 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:58:08,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-20 05:58:08,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87910b15/1930b0f0757e4d87bd66aef899d93942/FLAG23c05cad8 [2020-10-20 05:58:09,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87910b15/1930b0f0757e4d87bd66aef899d93942 [2020-10-20 05:58:09,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:58:09,209 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:58:09,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:09,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:58:09,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:58:09,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b632cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09, skipping insertion in model container [2020-10-20 05:58:09,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:58:09,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:58:09,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:09,706 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:58:09,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:09,872 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:58:09,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09 WrapperNode [2020-10-20 05:58:09,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:09,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:58:09,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:58:09,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:58:09,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (1/1) ... [2020-10-20 05:58:09,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:58:09,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:58:09,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:58:09,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:58:09,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 05:58:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:58:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:58:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 05:58:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:58:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:58:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:58:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:58:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:58:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 05:58:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:58:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:58:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 05:58:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 05:58:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 05:58:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 05:58:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:58:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:58:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:58:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:58:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:58:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:58:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:58:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:58:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:58:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:58:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:58:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:58:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:58:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:58:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:58:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:58:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:58:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:58:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:58:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:58:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:58:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:58:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:58:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:58:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:58:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:58:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:58:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:58:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:58:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:58:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:58:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:58:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:58:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:58:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:58:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:58:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:58:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:58:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:58:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:58:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:58:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:58:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:58:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:58:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:58:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:58:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:58:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:58:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:58:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:58:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:58:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:58:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:58:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:58:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:58:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:58:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:58:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:58:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:58:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:58:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:58:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:58:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:58:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:58:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:58:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:58:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:58:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:58:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:58:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:58:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:58:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:58:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:58:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:58:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:58:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:58:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:58:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:58:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:58:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:58:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:58:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:58:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:58:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:58:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:58:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:58:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:58:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:58:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:58:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:58:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:58:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:58:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:58:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:58:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:58:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:58:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:58:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:58:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:58:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:58:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:58:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:58:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:58:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:58:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:58:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:58:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:58:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:58:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 05:58:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:58:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:58:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:58:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 05:58:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 05:58:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:58:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:58:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:58:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 05:58:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:58:10,440 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 05:58:10,748 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:58:10,748 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 05:58:10,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:10 BoogieIcfgContainer [2020-10-20 05:58:10,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:58:10,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:58:10,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:58:10,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:58:10,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:58:09" (1/3) ... [2020-10-20 05:58:10,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad444f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:10, skipping insertion in model container [2020-10-20 05:58:10,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:09" (2/3) ... [2020-10-20 05:58:10,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad444f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:10, skipping insertion in model container [2020-10-20 05:58:10,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:10" (3/3) ... [2020-10-20 05:58:10,761 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-10-20 05:58:10,772 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:58:10,781 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-10-20 05:58:10,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-10-20 05:58:10,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:58:10,809 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:58:10,809 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:58:10,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:58:10,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:58:10,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:58:10,810 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:58:10,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:58:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-20 05:58:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:58:10,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:10,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:10,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:10,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:10,844 INFO L82 PathProgramCache]: Analyzing trace with hash -849411233, now seen corresponding path program 1 times [2020-10-20 05:58:10,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:10,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542893901] [2020-10-20 05:58:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:11,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542893901] [2020-10-20 05:58:11,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:11,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:58:11,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630973337] [2020-10-20 05:58:11,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:58:11,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:11,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:58:11,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:58:11,151 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-10-20 05:58:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:11,385 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-10-20 05:58:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:58:11,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 05:58:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:11,398 INFO L225 Difference]: With dead ends: 100 [2020-10-20 05:58:11,398 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 05:58:11,400 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 [2020-10-20 05:58:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 05:58:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-20 05:58:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 05:58:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-10-20 05:58:11,448 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 11 [2020-10-20 05:58:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:11,449 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-10-20 05:58:11,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:58:11,449 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-10-20 05:58:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:58:11,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:11,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:11,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:58:11,451 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:11,452 INFO L82 PathProgramCache]: Analyzing trace with hash -562931253, now seen corresponding path program 1 times [2020-10-20 05:58:11,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:11,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393901732] [2020-10-20 05:58:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:11,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393901732] [2020-10-20 05:58:11,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:11,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:58:11,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321767053] [2020-10-20 05:58:11,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:58:11,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:11,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:58:11,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:58:11,557 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 5 states. [2020-10-20 05:58:11,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:11,865 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2020-10-20 05:58:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:58:11,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 05:58:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:11,868 INFO L225 Difference]: With dead ends: 113 [2020-10-20 05:58:11,868 INFO L226 Difference]: Without dead ends: 113 [2020-10-20 05:58:11,871 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 [2020-10-20 05:58:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-20 05:58:11,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2020-10-20 05:58:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 05:58:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-10-20 05:58:11,891 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 12 [2020-10-20 05:58:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:11,891 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-10-20 05:58:11,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:58:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-10-20 05:58:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:58:11,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:11,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:11,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:58:11,895 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:11,895 INFO L82 PathProgramCache]: Analyzing trace with hash -562931252, now seen corresponding path program 1 times [2020-10-20 05:58:11,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:11,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203410350] [2020-10-20 05:58:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:12,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203410350] [2020-10-20 05:58:12,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:12,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:58:12,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466121845] [2020-10-20 05:58:12,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:58:12,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:12,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:58:12,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:58:12,041 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 5 states. [2020-10-20 05:58:12,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:12,407 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-10-20 05:58:12,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:58:12,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 05:58:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:12,411 INFO L225 Difference]: With dead ends: 129 [2020-10-20 05:58:12,411 INFO L226 Difference]: Without dead ends: 129 [2020-10-20 05:58:12,412 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 [2020-10-20 05:58:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-20 05:58:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-10-20 05:58:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-20 05:58:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-10-20 05:58:12,439 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 12 [2020-10-20 05:58:12,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:12,440 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-10-20 05:58:12,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:58:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-10-20 05:58:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:58:12,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:12,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:12,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:58:12,444 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:12,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887182, now seen corresponding path program 1 times [2020-10-20 05:58:12,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:12,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901021623] [2020-10-20 05:58:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:12,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901021623] [2020-10-20 05:58:12,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:12,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:58:12,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821741699] [2020-10-20 05:58:12,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:58:12,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:12,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:58:12,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:58:12,572 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2020-10-20 05:58:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:13,107 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-10-20 05:58:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:13,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 05:58:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:13,110 INFO L225 Difference]: With dead ends: 157 [2020-10-20 05:58:13,110 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 05:58:13,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:58:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 05:58:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2020-10-20 05:58:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-20 05:58:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-10-20 05:58:13,121 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 21 [2020-10-20 05:58:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:13,122 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-10-20 05:58:13,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:58:13,122 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-10-20 05:58:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:58:13,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:13,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:13,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:58:13,124 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:13,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887181, now seen corresponding path program 1 times [2020-10-20 05:58:13,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:13,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038439565] [2020-10-20 05:58:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:13,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:13,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038439565] [2020-10-20 05:58:13,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:13,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:58:13,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461039008] [2020-10-20 05:58:13,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:58:13,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:58:13,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:58:13,263 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 7 states. [2020-10-20 05:58:13,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:13,839 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-20 05:58:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:58:13,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 05:58:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:13,841 INFO L225 Difference]: With dead ends: 160 [2020-10-20 05:58:13,841 INFO L226 Difference]: Without dead ends: 160 [2020-10-20 05:58:13,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:58:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-20 05:58:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 101. [2020-10-20 05:58:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 05:58:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-10-20 05:58:13,863 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 21 [2020-10-20 05:58:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:13,863 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-10-20 05:58:13,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:58:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-10-20 05:58:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:58:13,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:13,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:13,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:58:13,867 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash -517016407, now seen corresponding path program 1 times [2020-10-20 05:58:13,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:13,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700060853] [2020-10-20 05:58:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:14,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:14,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700060853] [2020-10-20 05:58:14,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:14,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 05:58:14,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531009944] [2020-10-20 05:58:14,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:58:14,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:14,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:58:14,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:14,068 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 8 states. [2020-10-20 05:58:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:14,390 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-10-20 05:58:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:14,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-20 05:58:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:14,393 INFO L225 Difference]: With dead ends: 190 [2020-10-20 05:58:14,393 INFO L226 Difference]: Without dead ends: 190 [2020-10-20 05:58:14,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:58:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-20 05:58:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2020-10-20 05:58:14,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-20 05:58:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-20 05:58:14,412 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 22 [2020-10-20 05:58:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:14,414 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-20 05:58:14,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:58:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-20 05:58:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 05:58:14,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:14,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:14,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:58:14,418 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:14,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:14,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1315861814, now seen corresponding path program 1 times [2020-10-20 05:58:14,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:14,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818008588] [2020-10-20 05:58:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:14,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818008588] [2020-10-20 05:58:14,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:14,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 05:58:14,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037371414] [2020-10-20 05:58:14,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:58:14,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:14,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:58:14,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:14,578 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 8 states. [2020-10-20 05:58:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:14,876 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2020-10-20 05:58:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:14,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-20 05:58:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:14,879 INFO L225 Difference]: With dead ends: 176 [2020-10-20 05:58:14,879 INFO L226 Difference]: Without dead ends: 176 [2020-10-20 05:58:14,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:58:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-20 05:58:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 114. [2020-10-20 05:58:14,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-20 05:58:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-10-20 05:58:14,889 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 24 [2020-10-20 05:58:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:14,890 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-10-20 05:58:14,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:58:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-10-20 05:58:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 05:58:14,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:14,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:14,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 05:58:14,892 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:14,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956336, now seen corresponding path program 1 times [2020-10-20 05:58:14,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:14,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038906587] [2020-10-20 05:58:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:14,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038906587] [2020-10-20 05:58:14,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:14,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:58:14,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64709717] [2020-10-20 05:58:14,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:58:14,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:14,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:58:14,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:58:14,968 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 7 states. [2020-10-20 05:58:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:15,314 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2020-10-20 05:58:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:15,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-20 05:58:15,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:15,316 INFO L225 Difference]: With dead ends: 129 [2020-10-20 05:58:15,316 INFO L226 Difference]: Without dead ends: 129 [2020-10-20 05:58:15,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:58:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-20 05:58:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2020-10-20 05:58:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-20 05:58:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-20 05:58:15,322 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 24 [2020-10-20 05:58:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:15,322 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-20 05:58:15,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:58:15,323 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-20 05:58:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 05:58:15,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:15,324 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:15,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 05:58:15,325 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:15,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:15,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956337, now seen corresponding path program 1 times [2020-10-20 05:58:15,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:15,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985605117] [2020-10-20 05:58:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:15,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985605117] [2020-10-20 05:58:15,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:15,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:58:15,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050088188] [2020-10-20 05:58:15,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:58:15,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:15,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:58:15,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:58:15,415 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 7 states. [2020-10-20 05:58:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:15,847 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-10-20 05:58:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:58:15,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-20 05:58:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:15,849 INFO L225 Difference]: With dead ends: 127 [2020-10-20 05:58:15,849 INFO L226 Difference]: Without dead ends: 127 [2020-10-20 05:58:15,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:58:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-20 05:58:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2020-10-20 05:58:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 05:58:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-20 05:58:15,854 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 24 [2020-10-20 05:58:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:15,854 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-20 05:58:15,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:58:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-20 05:58:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 05:58:15,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:15,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:15,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 05:58:15,857 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:15,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1772362976, now seen corresponding path program 1 times [2020-10-20 05:58:15,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:15,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114454440] [2020-10-20 05:58:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:58:15,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:58:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:58:15,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:58:15,917 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 05:58:15,917 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:58:15,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 05:58:15,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:58:15 BoogieIcfgContainer [2020-10-20 05:58:15,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:58:15,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:58:15,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:58:15,960 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:58:15,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:10" (3/4) ... [2020-10-20 05:58:15,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 05:58:15,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:58:15,968 INFO L168 Benchmark]: Toolchain (without parser) took 6764.26 ms. Allocated memory was 35.7 MB in the beginning and 84.4 MB in the end (delta: 48.8 MB). Free memory was 13.6 MB in the beginning and 44.8 MB in the end (delta: -31.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:15,969 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 05:58:15,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.84 ms. Allocated memory was 35.7 MB in the beginning and 46.1 MB in the end (delta: 10.5 MB). Free memory was 12.7 MB in the beginning and 24.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:15,971 INFO L168 Benchmark]: Boogie Preprocessor took 78.96 ms. Allocated memory is still 46.1 MB. Free memory was 24.6 MB in the beginning and 21.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:15,972 INFO L168 Benchmark]: RCFGBuilder took 798.59 ms. Allocated memory was 46.1 MB in the beginning and 51.4 MB in the end (delta: 5.2 MB). Free memory was 21.5 MB in the beginning and 31.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:15,973 INFO L168 Benchmark]: TraceAbstraction took 5206.94 ms. Allocated memory was 51.4 MB in the beginning and 84.4 MB in the end (delta: 33.0 MB). Free memory was 30.5 MB in the beginning and 45.8 MB in the end (delta: -15.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:15,974 INFO L168 Benchmark]: Witness Printer took 5.90 ms. Allocated memory is still 84.4 MB. Free memory was 45.8 MB in the beginning and 44.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:15,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 661.84 ms. Allocated memory was 35.7 MB in the beginning and 46.1 MB in the end (delta: 10.5 MB). Free memory was 12.7 MB in the beginning and 24.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 78.96 ms. Allocated memory is still 46.1 MB. Free memory was 24.6 MB in the beginning and 21.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 798.59 ms. Allocated memory was 46.1 MB in the beginning and 51.4 MB in the end (delta: 5.2 MB). Free memory was 21.5 MB in the beginning and 31.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5206.94 ms. Allocated memory was 51.4 MB in the beginning and 84.4 MB in the end (delta: 33.0 MB). Free memory was 30.5 MB in the beginning and 45.8 MB in the end (delta: -15.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. * Witness Printer took 5.90 ms. Allocated memory is still 84.4 MB. Free memory was 45.8 MB in the beginning and 44.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 637 SDtfs, 920 SDslu, 1186 SDs, 0 SdLazy, 2627 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 16064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 16/16 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 0.1.25-9a8b2e8 [2020-10-20 05:58:18,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:58:18,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:58:18,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:58:18,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:58:18,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:58:18,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:58:18,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:58:18,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:58:18,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:58:18,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:58:18,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:58:18,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:58:18,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:58:18,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:58:18,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:58:18,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:58:18,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:58:18,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:58:18,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:58:18,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:58:18,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:58:18,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:58:18,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:58:18,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:58:18,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:58:18,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:58:18,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:58:18,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:58:18,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:58:18,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:58:18,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:58:18,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:58:18,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:58:18,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:58:18,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:58:18,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:58:18,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:58:18,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:58:18,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:58:18,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:58:18,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 05:58:18,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:58:18,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:58:18,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:58:18,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:58:18,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:58:18,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:58:18,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:58:18,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:58:18,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:58:18,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:58:18,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:58:18,179 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:58:18,179 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:58:18,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:58:18,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:58:18,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:58:18,180 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 05:58:18,181 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 05:58:18,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:58:18,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:58:18,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:58:18,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:58:18,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:58:18,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:58:18,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:58:18,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:58:18,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:58:18,183 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 05:58:18,183 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 05:58:18,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:58:18,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 05:58:18,184 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-10-20 05:58:18,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:58:18,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:58:18,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:58:18,403 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:58:18,404 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:58:18,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-20 05:58:18,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3418ad97d/49dbcd5f2cc44b9cb7e727098c8cfc4f/FLAGd16f3291c [2020-10-20 05:58:19,040 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:58:19,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-20 05:58:19,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3418ad97d/49dbcd5f2cc44b9cb7e727098c8cfc4f/FLAGd16f3291c [2020-10-20 05:58:19,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3418ad97d/49dbcd5f2cc44b9cb7e727098c8cfc4f [2020-10-20 05:58:19,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:58:19,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:58:19,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:19,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:58:19,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:58:19,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:19" (1/1) ... [2020-10-20 05:58:19,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729edc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:19, skipping insertion in model container [2020-10-20 05:58:19,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:19" (1/1) ... [2020-10-20 05:58:19,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:58:19,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:58:19,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:19,905 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:58:19,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:20,065 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:58:20,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20 WrapperNode [2020-10-20 05:58:20,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:20,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:58:20,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:58:20,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:58:20,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:58:20,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:58:20,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:58:20,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:58:20,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 05:58:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:58:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:58:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:58:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 05:58:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:58:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:58:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:58:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:58:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:58:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 05:58:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:58:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:58:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 05:58:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 05:58:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 05:58:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 05:58:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:58:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:58:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:58:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:58:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:58:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:58:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:58:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:58:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:58:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:58:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:58:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:58:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:58:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:58:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:58:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:58:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:58:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:58:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:58:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:58:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:58:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:58:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:58:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:58:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:58:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:58:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:58:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:58:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:58:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:58:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:58:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:58:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:58:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:58:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:58:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:58:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:58:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:58:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:58:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:58:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:58:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:58:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:58:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:58:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:58:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:58:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:58:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:58:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:58:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:58:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:58:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:58:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:58:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:58:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:58:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:58:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:58:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:58:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:58:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:58:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:58:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:58:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:58:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:58:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:58:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:58:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:58:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:58:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:58:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:58:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:58:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:58:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:58:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:58:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:58:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:58:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:58:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:58:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:58:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:58:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:58:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:58:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:58:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:58:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 05:58:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:58:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:58:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 05:58:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 05:58:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 05:58:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 05:58:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:58:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:58:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 05:58:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:58:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:58:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 05:58:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 05:58:20,644 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 05:58:21,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:58:21,090 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 05:58:21,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:21 BoogieIcfgContainer [2020-10-20 05:58:21,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:58:21,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:58:21,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:58:21,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:58:21,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:58:19" (1/3) ... [2020-10-20 05:58:21,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3521ca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:21, skipping insertion in model container [2020-10-20 05:58:21,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (2/3) ... [2020-10-20 05:58:21,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3521ca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:21, skipping insertion in model container [2020-10-20 05:58:21,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:21" (3/3) ... [2020-10-20 05:58:21,103 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-10-20 05:58:21,116 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:58:21,125 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-10-20 05:58:21,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-10-20 05:58:21,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:58:21,172 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:58:21,172 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:58:21,173 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:58:21,174 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:58:21,174 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:58:21,174 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:58:21,174 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:58:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-20 05:58:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:58:21,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:21,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:21,210 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:21,219 INFO L82 PathProgramCache]: Analyzing trace with hash -243684713, now seen corresponding path program 1 times [2020-10-20 05:58:21,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:21,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247116945] [2020-10-20 05:58:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 05:58:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:21,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:58:21,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:21,519 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 [2020-10-20 05:58:21,520 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:21,533 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:21,534 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:21,535 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:58:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:21,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:21,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247116945] [2020-10-20 05:58:21,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:21,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 05:58:21,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030506918] [2020-10-20 05:58:21,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:58:21,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:58:21,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:58:21,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:21,700 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 6 states. [2020-10-20 05:58:22,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:22,705 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2020-10-20 05:58:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:58:22,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 05:58:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:22,721 INFO L225 Difference]: With dead ends: 160 [2020-10-20 05:58:22,722 INFO L226 Difference]: Without dead ends: 149 [2020-10-20 05:58:22,724 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 [2020-10-20 05:58:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-20 05:58:22,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-10-20 05:58:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-20 05:58:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2020-10-20 05:58:22,786 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 10 [2020-10-20 05:58:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:22,789 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2020-10-20 05:58:22,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:58:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2020-10-20 05:58:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:58:22,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:22,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:22,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 05:58:22,992 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:22,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:22,992 INFO L82 PathProgramCache]: Analyzing trace with hash -243684714, now seen corresponding path program 1 times [2020-10-20 05:58:22,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:22,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79007737] [2020-10-20 05:58:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 05:58:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:23,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:58:23,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:23,136 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 [2020-10-20 05:58:23,137 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:23,139 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:23,140 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:23,140 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:58:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:23,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:23,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79007737] [2020-10-20 05:58:23,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:23,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 05:58:23,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425240531] [2020-10-20 05:58:23,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:58:23,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:58:23,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:58:23,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:58:23,182 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand 4 states. [2020-10-20 05:58:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:23,532 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-10-20 05:58:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:58:23,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:58:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:23,535 INFO L225 Difference]: With dead ends: 109 [2020-10-20 05:58:23,535 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 05:58:23,536 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 [2020-10-20 05:58:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 05:58:23,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-20 05:58:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-20 05:58:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-10-20 05:58:23,547 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 10 [2020-10-20 05:58:23,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:23,547 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-10-20 05:58:23,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:58:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-10-20 05:58:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:58:23,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:23,549 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:23,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 05:58:23,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash 235389844, now seen corresponding path program 1 times [2020-10-20 05:58:23,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:23,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581303757] [2020-10-20 05:58:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 05:58:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:23,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:58:23,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:23,904 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 [2020-10-20 05:58:23,905 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:23,911 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:23,912 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:23,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:58:23,951 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 [2020-10-20 05:58:23,951 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:23,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:23,974 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 [2020-10-20 05:58:23,974 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:23,986 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:23,987 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:23,988 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-20 05:58:24,035 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 [2020-10-20 05:58:24,036 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:24,048 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:24,051 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 [2020-10-20 05:58:24,052 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:24,062 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:24,063 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:24,063 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-20 05:58:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:24,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:24,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581303757] [2020-10-20 05:58:24,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:24,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-20 05:58:24,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190589530] [2020-10-20 05:58:24,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:58:24,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:58:24,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:58:24,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:58:24,380 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 10 states. [2020-10-20 05:58:26,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:26,213 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2020-10-20 05:58:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:58:26,213 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 05:58:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:26,215 INFO L225 Difference]: With dead ends: 149 [2020-10-20 05:58:26,215 INFO L226 Difference]: Without dead ends: 149 [2020-10-20 05:58:26,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:58:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-20 05:58:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2020-10-20 05:58:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-20 05:58:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-10-20 05:58:26,227 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 17 [2020-10-20 05:58:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:26,227 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-10-20 05:58:26,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:58:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-10-20 05:58:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:58:26,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:26,228 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:26,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 05:58:26,433 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:26,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:26,434 INFO L82 PathProgramCache]: Analyzing trace with hash 235389843, now seen corresponding path program 1 times [2020-10-20 05:58:26,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:26,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954530298] [2020-10-20 05:58:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 05:58:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:26,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:58:26,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:26,601 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 [2020-10-20 05:58:26,602 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:26,604 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:26,605 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:26,605 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:58:26,616 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 [2020-10-20 05:58:26,616 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:26,625 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:26,626 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:26,629 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-20 05:58:26,658 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 [2020-10-20 05:58:26,659 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:26,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:26,661 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:26,662 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-20 05:58:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:26,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:26,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954530298] [2020-10-20 05:58:26,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:26,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 05:58:26,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825050167] [2020-10-20 05:58:26,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:58:26,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:58:26,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:58:26,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:26,707 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-10-20 05:58:27,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:27,258 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-10-20 05:58:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:58:27,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-20 05:58:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:27,260 INFO L225 Difference]: With dead ends: 135 [2020-10-20 05:58:27,260 INFO L226 Difference]: Without dead ends: 135 [2020-10-20 05:58:27,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:58:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-20 05:58:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2020-10-20 05:58:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 05:58:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-10-20 05:58:27,268 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 17 [2020-10-20 05:58:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:27,269 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-10-20 05:58:27,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:58:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-10-20 05:58:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:58:27,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:27,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:27,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 05:58:27,481 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:27,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:27,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1387471408, now seen corresponding path program 1 times [2020-10-20 05:58:27,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:27,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643204828] [2020-10-20 05:58:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 05:58:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:27,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:58:27,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:27,658 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 [2020-10-20 05:58:27,658 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:27,667 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:27,668 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:27,668 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-20 05:58:27,717 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-20 05:58:27,718 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 [2020-10-20 05:58:27,719 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:27,723 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:27,723 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:27,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-20 05:58:27,746 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 [2020-10-20 05:58:27,747 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:27,749 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:27,750 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:27,750 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-20 05:58:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:27,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:27,809 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:27,819 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:27,820 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:27,821 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-20 05:58:27,899 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 160 treesize of output 152 [2020-10-20 05:58:27,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643204828] [2020-10-20 05:58:27,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:58:27,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1484112309] [2020-10-20 05:58:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:58:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:28,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:58:28,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:28,210 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 [2020-10-20 05:58:28,211 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,220 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:28,220 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-20 05:58:28,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:58:28,277 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-10-20 05:58:28,278 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:28,283 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,283 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:13 [2020-10-20 05:58:28,334 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 [2020-10-20 05:58:28,335 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,337 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:28,338 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,338 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2020-10-20 05:58:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:28,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:28,348 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:28,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:28,357 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:28,357 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-20 05:58:28,412 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 160 treesize of output 152 [2020-10-20 05:58:28,413 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:58:28,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017393265] [2020-10-20 05:58:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:58:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:28,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:58:28,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:28,556 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 [2020-10-20 05:58:28,556 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:28,565 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,565 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-20 05:58:28,581 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-20 05:58:28,582 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 [2020-10-20 05:58:28,582 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:28,586 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,586 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-20 05:58:28,593 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 [2020-10-20 05:58:28,594 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:28,597 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:28,597 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-20 05:58:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:28,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:28,618 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:28,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:28,633 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:28,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-20 05:58:28,693 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 160 treesize of output 152 [2020-10-20 05:58:28,695 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:58:28,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:28,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 05:58:28,695 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 05:58:28,695 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:58:29,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:58:29,317 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 05:58:29,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:58:29 BoogieIcfgContainer [2020-10-20 05:58:29,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:58:29,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:58:29,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:58:29,318 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:58:29,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:21" (3/4) ... [2020-10-20 05:58:29,321 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 05:58:29,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:58:29,323 INFO L168 Benchmark]: Toolchain (without parser) took 9989.41 ms. Allocated memory was 34.6 MB in the beginning and 78.1 MB in the end (delta: 43.5 MB). Free memory was 14.1 MB in the beginning and 22.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:29,324 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 33.6 MB. Free memory was 10.5 MB in the beginning and 10.5 MB in the end (delta: 62.9 kB). Peak memory consumption was 62.9 kB. Max. memory is 14.3 GB. [2020-10-20 05:58:29,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.21 ms. Allocated memory was 34.6 MB in the beginning and 45.6 MB in the end (delta: 11.0 MB). Free memory was 13.2 MB in the beginning and 22.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:29,325 INFO L168 Benchmark]: Boogie Preprocessor took 77.93 ms. Allocated memory is still 45.6 MB. Free memory was 22.2 MB in the beginning and 18.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:29,326 INFO L168 Benchmark]: RCFGBuilder took 947.18 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 18.6 MB in the beginning and 25.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:29,327 INFO L168 Benchmark]: TraceAbstraction took 8223.60 ms. Allocated memory was 50.9 MB in the beginning and 78.1 MB in the end (delta: 27.3 MB). Free memory was 25.4 MB in the beginning and 22.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:29,327 INFO L168 Benchmark]: Witness Printer took 3.76 ms. Allocated memory is still 78.1 MB. Free memory is still 22.9 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:58:29,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 33.6 MB. Free memory was 10.5 MB in the beginning and 10.5 MB in the end (delta: 62.9 kB). Peak memory consumption was 62.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 726.21 ms. Allocated memory was 34.6 MB in the beginning and 45.6 MB in the end (delta: 11.0 MB). Free memory was 13.2 MB in the beginning and 22.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 77.93 ms. Allocated memory is still 45.6 MB. Free memory was 22.2 MB in the beginning and 18.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 947.18 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 18.6 MB in the beginning and 25.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 8223.60 ms. Allocated memory was 50.9 MB in the beginning and 78.1 MB in the end (delta: 27.3 MB). Free memory was 25.4 MB in the beginning and 22.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.3 GB. * Witness Printer took 3.76 ms. Allocated memory is still 78.1 MB. Free memory is still 22.9 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND TRUE p->h == 1 [L560] i++ [L561] EXPR p->n [L561] p = p->n [L559] p->h - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 121 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 8.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 235 SDtfs, 520 SDslu, 530 SDs, 0 SdLazy, 998 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, 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, 4 MinimizatonAttempts, 133 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 6260 SizeOfPredicates, 27 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 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...